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Bonnie Parker mockingly points shotgun at Clyde Barrow. American bank robbers and lovers Clyde Barrow (1909 - 1934) and Bonnie Parker (1911 -1934), popularly known as Bonnie and Clyde, circa 1933. criminal, thief, robbery team

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  • Humanities LibreTexts - Euthanasia
  • University of Missouri School of Medicine - Center for Health Ethics - Euthanasia
  • National Library of Medicine - Culturally sanctioned suicide: Euthanasia, seppuku, and terrorist martyrdom
  • Academia - Euthanasia, or Mercy Killing
  • Stanford Encyclopedia of Philosophy - Voluntary Euthanasia
  • euthanasia - Student Encyclopedia (Ages 11 and up)

euthanasia , act or practice of painlessly putting to death persons suffering from painful and incurable disease or incapacitating physical disorder or allowing them to die by withholding treatment or withdrawing artificial life-support measures. Because there is no specific provision for it in most legal systems, it is usually regarded as either suicide (if performed by the patient himself) or murder (if performed by another). Physicians may, however, lawfully decide not to prolong life in cases of extreme suffering, and they may administer drugs to relieve pain even if this shortens the patient’s life. In the late 20th century, several European countries had special provisions in their criminal codes for lenient sentencing and the consideration of extenuating circumstances in prosecutions for euthanasia.

The opinion that euthanasia is morally permissible is traceable to Socrates , Plato , and the Stoics . It is rejected in traditional Christian belief, chiefly because it is thought to contravene the prohibition of murder in the Ten Commandments . The organized movement for legalization of euthanasia commenced in England in 1935, when C. Killick Millard founded the Voluntary Euthanasia Legalisation Society (later called the Euthanasia Society). The society’s bill was defeated in the House of Lords in 1936, as was a motion on the same subject in the House of Lords in 1950. In the United States the Euthanasia Society of America was founded in 1938.

Code of Hammurabi

The first countries to legalize euthanasia were the Netherlands in 2001 and Belgium in 2002. In 1997 Oregon became the first state in the United States to decriminalize physician-assisted suicide; opponents of the controversial law, however, attempted to have it overturned. In 2009 the Supreme Court of South Korea recognized a “right to die with dignity” in its decision to approve a request by the family of a brain-dead woman that she be removed from life-support systems.

The potential of modern medical practice to prolong life through technological means has provoked the question of what courses of action should be available to the physician and the family in cases of extreme physical or emotional suffering, especially if the patient is incapable of choice. Passively doing nothing to prolong life or withdrawing life-support measures has resulted in criminal charges being brought against physicians; on the other hand, the families of comatose and apparently terminal patients have instituted legal action against the medical establishment to make them stop the use of extraordinary life support.

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  • Ann Med Surg (Lond)
  • v.75; 2022 Mar

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Euthanasia and assisted suicide: An in-depth review of relevant historical aspects

Yelson alejandro picón-jaimes.

a Medical and Surgical Research Center, Future Surgeons Chapter, Colombian Surgery Association, Bogotá, Colombia

Ivan David Lozada-Martinez

b Grupo Prometheus y Biomedicina Aplicada a las Ciencias Clínicas, School of Medicine, Universidad de Cartagena, Cartagena, Colombia

Javier Esteban Orozco-Chinome

c Department of Medicine, RedSalud, Santiago de Chile, Chile

Lina María Montaña-Gómez

d Department of Medicine, Keralty Salud, Bogotá, Colombia

María Paz Bolaño-Romero

Luis rafael moscote-salazar.

e Colombian Clinical Research Group in Neurocritical Care, Latin American Council of Neurocritical Care, Bogotá, Colombia

Tariq Janjua

f Department of Intensive Care, Regions Hospital, Minnesota, USA

Sabrina Rahman

g Independent University, Dhaka, Bangladesh

End-of-life care is an increasingly relevant topic due to advances in biomedical research and the establishment of new disciplines in evidence-based medicine and bioethics. Euthanasia and assisted suicide are two terms widely discussed in medicine, which cause displeasure on many occasions and cause relief on others. The evolution of these terms and the events associated with their study have allowed the evaluation of cases that have established useful definitions for the legal regulation of palliative care and public policies in the different health systems. However, there are still many aspects to be elucidated and defined. Based on the above, this review aimed to compile relevant historical aspects on the evolution of euthanasia and assisted suicide, which will allow understanding the use and research of these terms.

  • • The history of euthanasia and assisted suicide has been traumatic.
  • • The church and research have been decisive in the definition of euthanasia.
  • • The legal framework on the use of euthanasia and assisted suicide has been strengthened.

1. Introduction

Euthanasia and assisted suicide are two topics discussed throughout history, mainly because they fall within the scope of life as a human right, which has been universally defended for many years [ 1 ]. However, the mean of the word euthanasia as good death generates conflicts at social, moral, and ethical levels. Mainly because death is a loss, it is difficult to understand it as something positive and; additionally, several historical events such as the Nazi experiments related the term euthanasia more to murder than to a kind and compassionate act [ 1 ]. More current texts mention that euthanasia is the process in which, through the use or abstention of clinical measures, the death of a patient in an incurable or terminal condition can be hastened to avoid excessive suffering [ 2 ].

The difference between euthanasia and assisted suicide is that in the latter, the patient takes the final action; however, both practices can be combined in the term assisted death [ 2 ]. At present, several countries authorize assisted death, including Holland, Luxembourg, and Canada [ 3 ]. Belgium and Colombia have regulations that decriminalize only euthanasia; other places where assisted suicide is legal are Switzerland and five states of the United America states, specifically Oregon, Vermont, Washington, California, and Montana [ 2 , 3 ]. Spain recently joined the list of countries that have legislated on euthanasia through the organic law March 2021 of March 24 that regulates euthanasia in that state in both public and private institutions [ 4 ]. The fact that more and more countries were joining the legislation on euthanasia and assisted suicide has brought to light the opinion of thinkers, politicians, philosophers, and physicians. Several nations have initiated discussions on the matter in their governmental systems. Latin America is trying to advance powerfully in this medical-philosophical field. Currently, in Chile, the “Muerte digna y cuidados paliativos” law, which seeks to regulate the issue of euthanasia and assisted suicide in the country, is being debated in Congress [ 5 ].

It is essential to know the point of view of physicians on euthanasia and assisted suicide, especially taking into account that these professionals who provide care and accompany patients during this moment, which, if approved, would involve the medical community in both public and private health systems. Although it seems easy to think that physicians have a position in favor of the act of euthanasia because they are in direct and continuous contact with end-of-life situations, such as palliative care, terminally ill, and critically ill patients. It is important to remember that the Hippocratic medical oaths taken at the time of graduation of professionals are mostly categorical in mentioning the rejection of euthanasia and assisted suicide [ 6 ]. Furthermore, it is also important to note that many of the oldest universities in the Western world originated through the Catholic Church; and just this creed condemns the practice of euthanasia and continues to condemn it to this day. This situation generates that many medical students in these schools have behaviors based on humanist principles under the protection of faith and religion and therefore reject the possibility of euthanasia [ 7 , 8 ].

The relevance of the topic and the extensive discussion that it has had in recent months due to the COVID-19 pandemic added to the particular interest of bioethics in this topic and the need to know the point of view of doctors and other health professionals on euthanasia and assisted suicide.

2. Origin and meaning of the term euthanasia

The word euthanasia derives from the Greek word “eu” which means good, and the word “thanatos” which means death; therefore, the etymological meaning of this word is “good death”. Over time the evolution of the meaning has varied; even as we will see below was considered a form of eradication of people categorized under the designation of leading a less dignified life. Assisted suicide is a condition in which the patient is the one who carries out the action that ends his life through the ingestion of a lethal drug but has been dispensed in the context of health care and therefore called assisted. This care is provided by a physician trained in the area. However, it requires the prior coordination of a multidisciplinary team and even the assessment by an ethics committee to determine that the patient is exercising full autonomy, free from coercion by the situation he/she is living and free from the fatalistic desires of a psychiatric illness [ 9 ]. In a more literary sense, the word euthanasia meaning of “giving death to a person who freely requests it in order to free himself from suffering that is irreversible and that the person himself considers intolerable” [ 9 ].

Some authors go deeper into the definition and consider that for the meaning of euthanasia, are necessary to consider elements that are essential in the word itself; such as the fact that it is an act that seeks to provoke death and that carried out to eliminate the suffering in the person who is dying. Other elements with a secondary character in the definition are the patient's consent (which must be granted respecting autonomy and freedom in the positive and negative sense; that means the fact must be not be coerced in any way). Another element is the terminal nature of the disease, with an irreversible outcome that generates precariousness and a loss of dignity. The third secondary element is the absence of pain of the death through the use of drugs such as high-potency analgesics, including opioids, high-potency muscle relaxants, and even anesthetic drugs. Finally, the last element is the health context in which the action is performed (essential in some legislations to be considered euthanasia) [ 10 ]. According to the World Health Organization, the union of these two components is the current definition of euthanasia, which describes as “the action performed by a person to cause the painless death of another subject, or not preventing death in case of terminal illness or irreversible coma. Furthermore, with the explicit condition that the patient must be suffering physical, emotional, or spiritual and that affliction is uncontrollable with conventional measures such as medical treatments, analgesics, among others; then the objective of euthanasia is to alleviate this suffering” [ 11 ]. Unfortunately, the term euthanasia has been misused over the years, and other practices have been named with this word. An example of this situation occurred during the Nazi tyranny when the word euthanasia concerned the murder of people with disabilities, mental disorders, low social status, or gay people. At that time, euthanasia was even a simultaneous practice to the Jewish genocide [ 11 ].

Not only has the term been misused; also exists an enormous variability of terms to refer to euthanasia. For example, the laws created to regulate euthanasia have different names around the world; in the Netherlands (Holland), the law that regulates this practice is known as the law of termination of life; in Belgium, it is called euthanasia law, in France, it is called euthanasia law too. In Oregon (USA), it is called the death with dignity act; in California, it is the end of life option act. In Canada is called the medical assistance in dying act. Victoria (Australia) is the voluntary assisted dying bill, but all these denominations refer to the already well-known term euthanasia [ 11 ].

3. Evolution of euthanasia and assisted suicide: digging into historical events

To understand the evolution and relevance of these concepts should analyze the history of euthanasia and assisted suicide; from the emergence of the term, going through its first manifestations in antiquity; mentioning the conceptions of great thinkers such as Plato and Hippocrates; going through the role of the Catholic Church; mainly in the Middle Age, where following the thought of St. Thomas Aquinas, self-induced death or death contemplated by own will, was condemned. Later, with the renaissance age and the resurgence of science, technology, and the arts, the term euthanasia made a transition to a form similar to what we know today from thinkers such as Thomas More and Francis Bacon. Finally, the first signs of eugenics were known in London, Sweden, Germany, and the United States in the twentieth century. There was a relationship with the term euthanasia that was later used interchangeably, especially in the Nazi regime, to denote a form of systemic murder that sought to eradicate those who were not worthy of living a life.

Since the sixties, with emblematic cases, the path towards the decriminalization of euthanasia began in some countries, especially concerning the cessation of extreme support measures in cases of irreversible illness or a terminal condition. The practice has progressed to the appearance of laws on euthanasia in several countries.

4. Euthanasia and assisted suicide in ancient times

In book III of Plato's “The Republic”, the author stated that those who live their lives amidst illnesses and medicines or who were not physically healthy should be left to die; implying that it was thought that people in these conditions suffered so much that their quality of life diminished, which seemed understandable to these thinkers. However, other authors such as Hippocrates and his famous Hippocratic oath sought the protection of the patient's life through medicine, especially in vulnerable health conditions prone to fatal outcomes. This Hippocratic oath is the same oath that permeates our times and constitutes an argument among those who mark their position against euthanasia and assisted suicide [ 12 , 13 ].

Other texts that collect thoughts of Socrates and his disciple Plato point out that it was possible and well understood to think of ceasing to live in the face of a severe illness; to consider death to avoid a long and torturous agony. This fact is compatible with the conception of current euthanasia since this is the end of this health care procedure [ 13 ].

In The Republic, the text by Plato, the physician Heroditus is also condemned for inventing a way to prolong death and over manage the symptoms of serious illnesses, which is currently known as distanasia or excessive treatment prolongs life. This kind of excessive treatment prolongs the sick person's suffering, even leading him to maintain biological signs present but in a state of alienation and absolute dependence on medical equipment such as ventilators and artificial feeding [ 13 ]. However, the strongest indication that Euthanasic suicide was encouraged in Greece lies in other thinkers such as the Pythagoreans, Aristotelians, and Epicureans who strongly condemned this practice, which suggests that it was carried out repeatedly as a method and was therefore condemned by these thinkers [ 12 , 13 ]. According to stoicism, the pain that exceeded the limits of what was humanly bearable was one of the causes for which the wise man separates himself from life. Referring to one of the nuances that euthanasia touches today, that is, at a point of elevated suffering, the dignity and essence of the person are lost, persisting only the biological part but in the absence of the person's well-being as a being. In this sense, Lucius Seneca said that a person should not love life too much or hate it; but that person should have a middle ground and end their life when they ceased to perceive life as a good, worthy, and longed-for event [ 1 , 12 ].

During the Roman Empire and in the territories under its rule, it was believed that the terminally ill who commit suicide had sufficient reasons to do so; so since suicide caused by impatience and lack of resolution to pain or illness was accepted, when there was no access to medicines. In addition, there was little development in medicine during that time, and many of the sick died without treatment [ 12 ]. This situation changed later with the emergence of the Catholic church; in this age, who attempted against own life, was deprived of burial in the ground. Saint Augustine said that the suicide was an abominable and detestable act; from 693 AD, anyone who attempted against his physical integrity was excommunicated. Rejecting to the individuals and their lineage, depriving them of the possibility of attending the funeral and even expelled from cities and stripped of the properties they owned [ 12 , 13 ].

4.1. Euthanasia and assisted suicide in the Middle Age

During the Middle Age, Catholicism governed the sciences, arts, and medicine; the sciences fell asleep. Due to this solid religious tendency and the persistence of Augustinian thought, suicide was not well seen. It was not allowed to administer a lethal substance to a person to end the suffering of a severe or terminal illness [ 9 , 12 ]. People who took their own lives at this time could not be buried “Christianly”; therefore, they did not have access to a funeral, nor to the accompaniment of their family in a religious rite. Physical suffering and pain were then seen as a path to glorification. Suffering was extolled as the form that god purified the sin, similar to the suffering that Jesus endured during his Calvary days. However, a contrary situation was experienced in battles; a sort of short dagger-like weapon was often used to finish off badly wounded enemies and thus reduce their suffering, thus depriving them of the possibility of healing and was called “mercy killing” [ 12 ].

5. Euthanasia in renaissance

With the awakening of science and philosophy, ancient philosophers' thoughts took up again, giving priority to man, the world, and nature, thus promoting medical and scientific development. In their discourse, Thomas More and Francis Bacon refer to euthanasia; however, they give a eugenic sense to the concept of euthanasia, similar to that professed in the book of Plato's Republic. It is precise with these phylosophers that the term euthanasia got its current focus, referring to the acceleration of the death of a seriously ill person who has no possibility of recovery [ 12 ]. In other words, it was during this period that euthanasia acquired its current meaning, and death began to be considered the last act of life. Therefore, it was necessary to help the dying person with all available resources to achieve a dignified death without suffering, closing the cycle of life that ends with death [ 13 , 14 ].

In his work titled “Utopia”, Thomas More affirmed that in the ideal nation should be given the necessary and supportive care to the dying. Furthermore, in case of extraordinary suffering, it can be recommended to end the suffering, but only if the patient agrees, through deprivation of food or with the administration of a lethal drug; this procedure must be known to the affected person and with the due permission of authorities and priests [ 12 , 13 ]. Later, in the 17th century, the theologian Johann Andreae, in his utopia “Christianopolis”, contradicts the arguments of Bacon and Moro, defending the right of the seriously ill and incurably ill to continue living, even if they are disturbed and alienated, advocating for the care based on support and indulgence [ 15 , 16 ]. Similarly, many physicians rejected the concepts of Plato, Moro, and Bacon. Instead, they focused on opposing euthanasia, most notably in the nineteenth century. For example, the physician Christoph Hufeland mentioned that the doctor's job was only to preserve life, whether it was a fate or a misfortune, or whether it was worth living [ 16 ].

5.1. Euthanasia in the 20th century

Before considering the relevant aspects of euthanasia in the 20th century, it is vital to highlight the manuscript by Licata et al. [ 17 ], which narrates two episodes of euthanasia in the 19th century. The first one happened in Sicily (Italy) in 1860, during the battle of Calatafimi, where two soldiers were in constant suffering, one because he had a serious leg fracture with gangrene, and the other with a gunshot wound. The two soldiers begged to be allowed to die, and how they were in a precarious place without medical supplies, they gave them an opium pill, which calmed them until they died [ 17 ]. The second episode reported by Licata et al. [ 17 ] was witnessed by a Swedish doctor named Alex Munthe; who evidenced the pain of many patients in a Parisian hospital. So he decided to start administering morphine to help people who had been seriously injured by wolves and had a poor prognosis; therefore, the purpose of opioid use was analgesia while death was occurring.

It is also important to highlight the manuscript entitled “Euthanasia” by S. Williams published in 1873 in “Popular Science Monthly”, a journal that published texts by Darwin, Edison, Pasteur, and Beecher. This text included the report for the active euthanasia of seriously ill patients without a cure, in which the physicians were advised to administer chloroform to these patients or another anesthetic agent to reduce the level of consciousness of the subject and speed up their death in a painless manner [ 16 ].

Understanding that euthanasia was already reported in the nineteenth century, years after, specifically in 1900, the influence of eugenics, utilitarianism, social Darwinism, and the new currents of thought in England and Germany; it began in various parts around the world, projects that considered the active termination of life, thus giving rise to euthanasia societies in which there were discussions between philosophers, theologians, lawyers, and medical doctors. Those societies discussed diverse cases, such as the tuberculous patient Roland Gerkan, who was considered unfit and therefore a candidate to be released from the world [ 16 ]. The scarcity of resources, famine, and wars were reasons to promote euthanasia as a form of elimination of subjects considered weak or unfit, as argued in texts such as Ernst Haeckel's. However, opponents to the practice, such as Binding and Hoche, defended the principle of free will in 1920 [ 16 ].

5.2. Euthanasia in the time of the Nazis

As mentioned above, the term euthanasia was misused during this period; approximately 275,000 subjects (as reported at the Nuremberg International Military Tribunal 1945–1946), who had some degree of physical or mental disability, were killed during Adolf Hitler's Euthanasia program [ 13 ]. However, the Nazis were not the first to practice a form of eugenics under the name of euthanasia, since the early 1900s in London had already begun the sterilization of the rejected, such as the blind, deaf, mentally retarded, people with epilepsy, criminals, and rapists. This practice spread to different countries like Sweden and the United States [ 13 , 16 ].

For the Nazis, euthanasia represented the systematic murder of those whose lives were unworthy of living [ 13 ]. The name given to this doctrine was “Aktion T4”. At first and by law, from 1939, the hospitals were obliged to account for all disabled newborns, which led to the execution of more than 5000 newborns utilizing food deprivation or lethal injection [ 12 , 18 ].

A year before that law, in 1938, one of the first known cases of euthanasia in children arose in Germany. That history called the story of child K, in which it was the father of the minor who asked Hitler in writing for euthanasia for his son because the child had a severe mental disability and critical morphic disorders. Hitler gave his consent to carry out the procedure on child K, and thus the program began to spread throughout the Aleman territory. Since then, physicians and nurses had been in charge of reporting the newborns with alterations, arising the “Kinderfachabteilugen” for the internment of children who would be sentenced to death after a committee's decision [ 12 , 18 , 19 ]. A list of diseases and conditions that were considered undesirable to be transmitted to Hitler's superior Aryan race was determined; thus, any child with idiocy, mongolism, blindness, deafness, hydrocephalus, paralysis, and spinal, head, and hip malformations were eligible for euthanasia [ 19 ].

Subsequently, the program was extended to adults with chronic illness, so those people were selected and transported by T4 personnel to psychiatric sanatoriums strategically located far away. There, the ill patients received the injection of barbiturate overdoses, and carbon monoxide poisoning was tested as a method of elimination, surging the widely known gas chamber of the concentration camp extermination; this situation occurred before 1940 [ 12 , 19 ]. Again, physicians and nurses were the ones who designated to the patients to receive those procedures; in this case, these health professionals supported Nazi exterminations. They took the patients to the sanatoriums, where psychiatrists evaluated them and designated with red color if they should die and with a blue color if they were allowed to live (this form of selection was similar in children) [ 12 , 13 , 19 ]. In this case, the pathologies considered as criteria for death were those generating disability such as schizophrenia, paralysis, syphilis with sequelae, epilepsy, chorea, patients with chronic diseases with many recent treatments, subjects of non-German origin and individuals of mixed blood [ 19 ]. Once in the sanatoriums, they were informed that they would undergo a physical evaluation and take a shower to disinfect themselves; instead, they were killed in gas chambers [ 12 , 13 ]. Despite the church's action in 1941 against Nazis and after achieving suspension of the Aktion T4 project; the Nazi supporters kept the practices secretly, resuming them in 1942, with the difference that the victims were killed by lethal injection, by an overdose of drugs, or left to starve to death, instead of the use of gas chambers. This new modified form of euthanasia, which did not include gas chambers, became known as “savage euthanasia” [ 12 , 13 , 19 ].

5.3. Euthanasia since the 1960s

In September 1945, trials began for crimes perpetrated by Nazi supporters; the victorious Allied forces conducted these trials at the end of the war. During these tribunals, cases of human experimentation were identified and the public exposure of the Nazi euthanasia program. After the Nuremberg trials and the abolition of Nazi experiments, a series of seven documents emerged, among which the Nuremberg code containing the ten basic principles for human research stood out [ 20 , 21 ].

After these judgments, biotechnology was accelerated, with the apparition of new techniques to intervene in the health-disease process. Additionally, the increase in life expectancy and the appearance of diseases that chronically compromise the state of health of people generated a change in the conception of the critically ill patient and the terminal state of life [ 20 , 21 ]. Cases such as Karen Ann Quinlan brought to the forefront the issue of euthanasia and precisely the control of extreme treatment measures. Karen, a young American woman, was left in a vegetative state due to severe neurological damage following alcohol and barbiturate intoxication. After six months in that state and under the guardianship of a Catholic priest, Karen's parents requested the removal of the artificial respirator, arguing that in her state of consciousness prior to the incident, she had stated that she disagreed with artificially maintaining life in comatose patients. The hospital refused to remove the ventilator, arguing the legal issues for the date, and the parents went to court, which in the first instance granted the hospital the right. Nevertheless, the New Jersey Supreme Court granted Karen Ann's right to die in peace and dignity. Despite the withdrawal of the artificial respirator, he continued to live until 1985, when he finally died [ [21] , [22] , [23] ].

Another important case was Paul Brophy, which also occurred in the United States. Paul was a firefighter in Massachusetts and went into a deep coma due to the rupture of a basilar artery aneurysm; initially, his family advocated for support measures but later requested the hospital to disconnect these means to allow death, as Paul had indicated when he was still conscious. The hospital refused to carry out this procedure, so the family went to court, where the removal of the support measures (gastrostomy) was initially denied. Hence, the family went to the state supreme court, achieving the transfer of Paul to another medical center where the gastrostomy was removed, leading to his death within a few days [ 23 ].

The case of Arthur Koestler, an influential English writer and activist diagnosed with Parkinson's disease and later with leukemia, who served as vice-president of the voluntary euthanasia society (Exit) and wrote a manual book with practical advice for euthanasia called “Guide to Self-Liberation”. He stood out because he applied one of his advice and ingested an overdose of barbiturates, causing his self-death. According to his writings, Koestler was not afraid of death but of the painful process of dying [ 23 ]. In this sense, it was a relevant case because it involved someone who held an important position in an association that advocated euthanasia, in addition to being the author of several works, which made him a recognized public figure [ 23 ].

Baby Doe was a case that also occurred in the United States; it was a small child with Down syndrome who had a tracheoesophageal fistula and esophageal atresia; in this case, surgery was necessary. On the advice of the obstetrician, the parents did not allow surgery, so the hospital managers took the case before a judge who ruled that parents could decide to perform or not the surgery. The case was appealed before a county judge who upheld the parents' power to make the decision, in the course of which the case became public and many families offered to take care of the child; however, before the case reached the supreme court, the child died at six days of age [ 23 ].

In the case of Ingrid Frank, a German woman who was in a quadriplegic state by a traffic accident, who initially sought rehabilitation but later insisted on being allowed to die; it was provided with a drink containing a cyanide solution that she drank. At the same time, she was filmed, which shows a kind of assisted suicide. For that reason, this is another case that deals with this issue and is important to know as background in the development of euthanasia and assisted suicide [ 22 , 23 ].

6. Current and future perspectives

The definition of brain death, the rational use of the concept of euthanasia and assisted suicide, and scientific literacy are the objectives of global bioethics to regulate euthanasia and assisted suicide, which can be accessible in all health systems [ [24] , [25] , [26] , [27] , [28] , [29] , [30] ]. End-of-life care will continue to be a subject of debate due to the struggle between biomedical principles, the different existing legal frameworks, and the general population's beliefs. Medical education and preparation in the perception of death, especially of a dignified death, seems to be the pillar of the understanding of the need to develop medical-legal tools that guarantee the integrity of humans until the end of their existence [ 31 , 32 ]. This is the reason why the new generations of physicians must be trained in bioethics to face these ethical conflicts during the development of their professional careers.

In addition, although the conception of bioethics belongs to the Western world, it is crucial to take into account the point of view of other cultures and creeds, for example, a study carried out in Turkey, where nursing students were questioned, found that many of them understood the reasons for performing euthanasia; however, they know that Islam prohibits it, as well as its legislation, and therefore they would not participate in this type of procedure [ 33 ]. Furthermore, Christianism and Islam prohibit euthanasia, but Judaism also prohibits it; in general, the so-called Abrahamic religions are contrary to any form of assisted death, whether it is active euthanasia, passive, or assisted suicide [ 34 ].

7. Conclusiones

The history and evolution of euthanasia and assisted suicide have been traumatic throughout human history. The church, politics, and biomedical research have been decisive in defining these concepts. Over the years, the legal framework and bioethical concepts on euthanasia have been strengthened. However, there is still much work to educate the general population and health professionals about end-of-life care and dignified death.

It is also important to remember that life is a concept that goes beyond biology. Currently, bioethics seeks to prioritize the concept of dignity, which must be linked to the very definition of life. Although the phrase is often heard that it is not necessary to move to be alive, what is important is that person feels worthy even if they have limited movement. The person's treatment must be individualized in bioethics since each individual is a unique unit. Therefore, medical paternalism must be abandoned. Instead, the subject must be more involved to understand their context and perception of life and dignity.

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All authors equally contributed to the analysis and writing of the manuscript.

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Not commissioned, externally peer reviewed.

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Sabrina Rahman. Independent University, Dhaka, Bangladesh. [email protected] .

Declaration of interests

The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

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Euthanasia Introductory powerpoint

Euthanasia Introductory powerpoint

Subject: Religious education

Age range: 14-16

Resource type: Other

Leigh1999

Last updated

15 July 2013

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Good clear introduction to the topic.

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craigvincent

You need to amend slide 6 that says that 'active euthanasia is otherwise known as suicide'. Instead, suicide is killing yourself, euthanasia is killing someone else - a big difference in the law.

A brilliant resource. Thanks

you little beaut

thanks. Excellent Powerpoint. <br /> <br />really helped me in my last minute preparation for my year 9 humanities. <br /> <br />thankyou.

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  • Published: 29 July 2024

Host circuit engagement of human cortical organoids transplanted in rodents

  • Kevin W. Kelley 1 , 2   na1 ,
  • Omer Revah 1 , 2   na1 ,
  • Felicity Gore 1 , 3   na1 ,
  • Konstantin Kaganovsky 1 , 2 ,
  • Xiaoyu Chen   ORCID: orcid.org/0000-0003-4009-8156 1 , 2 ,
  • Karl Deisseroth   ORCID: orcid.org/0000-0001-9440-3967 1 , 3 &
  • Sergiu P. Pașca   ORCID: orcid.org/0000-0002-3216-3248 1 , 2  

Nature Protocols ( 2024 ) Cite this article

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  • Biological models
  • Developmental neurogenesis

Human neural organoids represent promising models for studying neural function; however, organoids grown in vitro lack certain microenvironments and sensory inputs that are thought to be essential for maturation. The transplantation of patient-derived neural organoids into animal hosts helps overcome some of these limitations and offers an approach for neural organoid maturation and circuit integration. Here, we describe a method for transplanting human stem cell–derived cortical organoids (hCOs) into the somatosensory cortex of newborn rats. The differentiation of human induced pluripotent stem cells into hCOs occurs over 30–60 days, and the transplantation procedure itself requires ~0.5–1 hours per animal. The use of neonatal hosts provides a developmentally appropriate stage for circuit integration and allows the generation and experimental manipulation of a unit of human neural tissue within the cortex of a living animal host. After transplantation, animals can be maintained for hundreds of days, and transplanted hCO growth can be monitored by using brain magnetic resonance imaging. We describe the assessment of human neural circuit function in vivo by monitoring genetically encoded calcium responses and extracellular activity. To demonstrate human neuron–host functional integration, we also describe a procedure for engaging host neural circuits and for modulating animal behavior by using an optogenetic behavioral training paradigm. The transplanted human neurons can then undergo ex vivo characterization across modalities including dendritic morphology reconstruction, single-nucleus transcriptomics, optogenetic manipulation and electrophysiology. This approach may enable the discovery of cellular phenotypes from patient-derived cells and uncover mechanisms that contribute to human brain evolution from previously inaccessible developmental stages.

The protocol involves surgical implantation of human cortical organoids in the cerebral cortex of rat pups. Organoid growth is monitored by using MRI, whereas their functional integration in the host neural circuitry is carried out by using behavioral, electrophysiological and optogenetic approaches.

Transplanted organoids enable multimodal genomic measurements from millions of cells, facilitating characterization of human–human and human–rodent cellular interactions, including neural circuit activity patterns and relationships between glia and neurons.

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Data availability.

The main data discussed in this protocol are available in the supporting primary research paper 18 . Single-cell gene expression raw data are available under the Gene Expression Omnibus accession number GSE190815 . Additional raw datasets are available for research purposes from the corresponding author upon request.

Code availability

Code used for data processing and analysis are available on request from the corresponding author. For additional details on processing calcium imaging data, see our recently published STAR protocol 45 . The code used to analyze snRNA-seq data is available for download from https://github.com/kkelley85/Transplant_organoid_snRNAseq .

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Download references

Acknowledgements

We thank members of the Pașca laboratory at Stanford University for insightful discussions and technical support. This work was supported by the Stanford Big Idea Project on Brain Organogenesis (Wu Tsai Neuroscience Institute) (to S.P.P. and K.D.), the National Institute of Mental Health (R01 MH115012; to S.P.P.), the Kwan Funds (to S.P.P.), the Senkut Funds (to S.P.P.), the Coates Foundation (to S.P.P.), the Ludwig Family Foundation (to S.P.P.), the Alfred E. Mann Foundation (to S.P.P.), the Stanford Maternal & Child Health Research Institute (MCHRI) Postdoctoral Fellowship (to F.G. and O.R.), the Walter V. and Idun Berry Postdoctoral Fellowship (to F.G.), the NARSAD Young Investigator Award (to F.G.) and an NIH NIDA K99/R00 (K99 DA050662) (to F.G.). S.P.P. is a New York Stem Cell Foundation (NYSCF) Robertson Stem Cell Investigator, a CZI Ben Barres Investigator and a CZ BioHub Investigator. We thank the Stanford Center for Innovation in In vivo Imaging (SCi 3)—Small Animal Imaging Center, which is supported by the NIH S10 Shared Instrumentation grant (S10RR026917-01), and the Stanford Behavioral and Functional Neuroscience Laboratory, which is supported by an NIH S10 Shared Instrumentation for Animal Research grant (1S10OD030452-01).

Author information

These authors contributed equally: Kevin W. Kelley, Omer Revah, Felicity Gore.

Authors and Affiliations

Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA, USA

Kevin W. Kelley, Omer Revah, Felicity Gore, Konstantin Kaganovsky, Xiaoyu Chen, Karl Deisseroth & Sergiu P. Pașca

Stanford Brain Organogenesis, Wu Tsai Neurosciences Institute, Stanford University, Stanford, CA, USA

Kevin W. Kelley, Omer Revah, Konstantin Kaganovsky, Xiaoyu Chen & Sergiu P. Pașca

Department of Bioengineering, Stanford University, Stanford, CA, USA

Felicity Gore & Karl Deisseroth

You can also search for this author in PubMed   Google Scholar

Contributions

All authors contributed to the development of the methods described in this protocol. K.W.K. and S.P.P. wrote the manuscript with input and corrections from all authors.

Corresponding author

Correspondence to Sergiu P. Pașca .

Ethics declarations

Competing interests.

Stanford University holds patents for the generation of cortical organoids/spheroids (listing S.P.P. as an inventor) and a provisional patent application for transplantation of organoids (listing S.P.P., O.R., F.G., K.D. and K.W.K. as inventors).

Peer review

Peer review information.

Nature Protocols thanks Yanhong Shi and the other, anonymous, reviewer(s) for their contribution to the peer review of this work.

Additional information

Publisher’s note Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Related links

Key references using this protocol

Revah, O. et al. Nature 610 , 319–326 (2022): https://doi.org/10.1038/s41586-022-05277-w

Miura, Y. et al. Nat. Biotechnol . 38 , 1421–1430 (2020): https://doi.org/10.1038/s41587-020-00763-w

Yoon, S.-J. et al. Nat. Methods 16 , 75–78 (2019): https://doi.org/10.1038/s41592-018-0255-0

Sloan, S. A. et al. Nat. Protoc . 13 , 2062–2085 (2018): https://doi.org/10.1038/s41596-018-0032-7

Chen, X. et al. Nature 628 , 818–825 (2024): https://doi.org/10.1038/s41586-024-07310-6

Extended data

Extended data fig. 1 lentiviral expression in an hco..

Representative example images of hChR2-EYFP expression 6 d after infection in an hCO. Confocal images were overexposed to enable visualization of neurons, including those with low expression.

Extended Data Fig. 2 Example whisker images of FOXN1 transgenic pups.

a , Representative image of heterozygous FOXN1 +/− whisker growth in rat pups. b , Representative image of characteristic immature whisker growth of homozygous FOXN1 −/− rat pups.

Extended Data Fig. 3

Images of small-animal stereotactic instrument (left) with animal placed in the stereotactic frame (middle and right).

Extended Data Fig. 4 Vasculature in neonatal rat to target S1.

Representative image of neonatal rat brain vasculature landmarks for targeting S1.

Extended Data Fig. 5 Example images during transplantation of an hCO.

a , Representative surgical landmarks for targeting S1. b , Representative images after craniotomy and after puncturing the dura. c , Representative images of a needle at the dura surface (left) and within S1 (right). d , Representative image after organoid transplantation.

Extended Data Fig. 6 Images of nuclei after t-hCO dissociation.

Representative images of nuclei stained with trypan blue after dissociation from three separate examples.

Supplementary information

Reporting summary, supplementary video 1.

Surgical preparation, incision and exposure of the dorsal surface of the skull

Supplementary Video 2

Identifying surgical landmarks, craniotomy and transplantation of an hCO

Supplementary Video 3

Example craniotomy and puncturing of the dura

Supplementary Video 4

Retraction of the syringe and closing of the surgical site

Supplementary Video 5

Example failure: bubbles in media

Supplementary Video 6

Example failure: significant hCO backflow from the syringe

Supplementary Video 7

Minor hCO backflow from the syringe

Supplementary Video 8

Aspiration of hCO with the syringe

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Cite this article.

Kelley, K.W., Revah, O., Gore, F. et al. Host circuit engagement of human cortical organoids transplanted in rodents. Nat Protoc (2024). https://doi.org/10.1038/s41596-024-01029-4

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Euthanasia. The Giver. What is Euthanasia?. Self-assisted suicide

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Euthanasia The Giver

What is Euthanasia? • Self-assisted suicide • The term euthanasia...originally meant only 'good death,' but in modern society it has come to mean a death free of any anxiety and pain, often brought about through the use of medication. Most recently, it has come to mean 'mercy killing' -- deliberately putting an end to someone's life in order to spare the individual's suffering.

Pro Euthanasia • Proponents of euthanasia and physician-assisted suicide (PAS) contend that terminally ill people should have the right to end their suffering with a quick, dignified, and compassionate death. They argue that the right to die is protected by the same constitutional safeguards that guarantee such rights as marriage, procreation, and the refusal or termination of life-saving medical treatment.

Con Euthanasia • Opponents of euthanasia and physician-assisted suicide contend that doctors have a moral responsibility to keep their patients alive as reflected by the Hippocratic Oath. They argue there may be a "slippery slope" from euthanasia to murder, and that legalizing euthanasia will unfairly target the poor and disabled and create incentives for insurance companies to terminate lives in order to save money.

Legally… • The law is not clear, but morally is a decision among doctors, families and the patient • Living Wills • Palliative Care • DNR

Euthanasia is categorized in different ways, which include voluntary, non-voluntary, or involuntary. Voluntary euthanasia is legal in some countries and in some U.S. states. Non-voluntary euthanasia is illegal in all countries. Involuntary euthanasia is usually considered murder.

Topics • Religious concerns • Dr. Jack Kevorkian • Terry Schiavo • Ill fetuses and newborns

The Giver and Euthanasia • Release of the smaller twin • Baby injected with needle in the forehead • Father kills the baby • Father packs up the baby and sends it down the chute • Rosemary chose to inject herself…WHY??? • NO EMOTIONS!

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Euthanasia. by Eman Alkhonaifer. Euthanasia Act of killing someone painlessly Relieve suffer from incurable illness Called “Mercy killing” In English “Good death” Legal in some states ex: Washington, Oregon, Montana, Vermont and New Mexico. Terminally ill patients describe their pain

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Euthanasia. A Christian Perspective. What do we know so far?. 1. Euthanasia is... The painless killing of someone dying of a painful disease. 2. Voluntary euthanasia? You ask a doctor to help you die. 3. Non voluntary euthanasia? A doctor or family member makes the decision for you.

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euthanasia. arguments against. the unexpected cures argument. Active euthanasia would only be right in those cases where we know that there is no hope of recovery. There are no cases where we know that there is no hope of recovery [So] There are no cases in which active euthanasia is right.

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Euthanasia. from the Greek  εὐθανασία meaning &quot;good death&quot;: εὖ ,  eu  (well or good) + θάνατος ,  thanatos (death ). Voluntary euthanasia- at request of the patient Non-voluntary euthanasia- patient not competent Involuntary euthanasia- murder.

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Euthanasia. Created by Helene Herncane, Daniela Nestory, Alexis Stein and Gabby Belisle. Before. After. http://sagamorejournal.files.wordpress.com/2008/03/chantal-sebire.jpg. Chantal Sébire. 52 years old Retired French teacher Diagnosed with Esthesioneuroblastoma at 44. Chantal Sébire.

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Euthanasia. Definition . - the painless killing of a patient suffering from an incurable and painful disease or in an irreversible coma - AKA: mercy killing, assisted suicide - originated from the greek word for ”good death” . Two main classifications of Euthanasia .

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PP produced by Julie Arliss Academy Conferences. Euthanasia. See the Academy Conferences website for this year’s conference details: http://ethics.academyconferences.com. Key Issue 1. Is killing somebody, who is in the process of dying, morally the same as allowing them to die?.

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  6. euthanasia ppt by bharath nair

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  1. Euthanasia

    Euthanasia, act or practice of painlessly putting to death persons suffering from painful and incurable disease or incapacitating physical disorder or allowing them to die by withholding treatment or withdrawing artificial life-support measures. Learn more about euthanasia in this article.

  2. Euthanasia Presentation by ashley king on Prezi

    Euthanasia Presentation by ashley king on Prezi. Blog. July 25, 2024. Sales pitch presentation: creating impact with Prezi. July 22, 2024. Make every lesson count with these student engagement strategies. July 18, 2024. Product presentations: defining them and creating your own.

  3. 'Euthanasia: Right to Die with Dignity'

    The word 'Euthanasia' is derived from Greek, 'Eu' meaning 'good' and 'thanatos' meaning 'death', put together it means 'good death'. Euthanasia is defined as the hastening of death of a patient to prevent further sufferings. Active euthanasia refers to the physician deliberate act, usually the administration of lethal ...

  4. PPT

    Active vs. Passive Euthanasia • Active euthanasiaoccurs in those instances in which someone takes active means, such as a lethal injection, to bring about someone's death; • Passive euthanasiaoccurs in those instances in which someone simply refuses to intervene in order to prevent someone's death. Criticisms of the Active/Passive ...

  5. Euthanasia and assisted dying: what is the current position and what

    Assisted dying is a highly controversial moral issue incorporating both physician-assisted dying (PAD) and voluntary active euthanasia. End-of-life practices are debated in many countries, with assisted dying receiving different consideration across various jurisdictions. In this paper, we provide an analytic framework of the current position and the main arguments related to the rights and ...

  6. Euthanasia and assisted suicide: An in-depth review of relevant

    Euthanasia and assisted suicide: An in-depth review of relevant historical aspects. End-of-life care is an increasingly relevant topic due to advances in biomedical research and the establishment of new disciplines in evidence-based medicine and bioethics. Euthanasia and assisted suicide are two terms widely discussed in medicine, which cause ...

  7. PDF Richie Euthanasia

    1. active and passive euthanasia are not morally significant. 2. active is wrong, passive OK. 3. both active and passive euthanasia are different than the cessation of extraordinary means of treatment to prolong life. 4. doctors cannot be an agent of harm. 5. some people have a duty to die.

  8. Medical Ethics Debate: Euthanasia Presentation

    Download the Medical Ethics Debate: Euthanasia presentation for PowerPoint or Google Slides. Healthcare goes beyond curing patients and combating illnesses. Raising awareness about diseases, informing people about prevention methods, discussing some good practices, or even talking about a balanced diet—there are many topics related to ...

  9. Euthanasia Presentation by Brianna Larkins on Prezi

    The future Implications for the Future Euthanasia: What is Euthanasia? 'The painless killing of a patient suffering from an incurable and painful disease or in an irreversible coma.' My personal opinion Euthanasia is legal in the following countries/states: Netherlands, Belgium,

  10. Euthanasia Introductory powerpoint

    Subject: Religious education. Age range: 14-16. Resource type: Other. File previews. ppt, 858.5 KB. A quick powerpoint introduction to euthnasia. The pictures in the slides also help explain the ideas. See more.

  11. PPT

    Euthanasia. Comparative Ethics and Law. What is Euthanasia?. "granting painless death to a hopelessly ill patient with a non-curable disease." Distinction between euthanasia and murder. Types of Euthanasia. Passive Voluntary Involuntary Active. Historical Review.

  12. Euthanasia Thesis Statement

    Free Google Slides theme, PowerPoint template, and Canva presentation template. "Euthanasia" is a word that comes from Greek, formed by "ευ" (good) and "θανατος" (death). If you are going to do a thesis on euthanasia and need a presentation to defend it, this template can be very useful. Talk about what euthanasia is, what are the ...

  13. PPT

    Euthanasia. Garcelle Allen, Renzo Chunga, Diana Quispe & Shannon Rogers. What is Euthanasia?. "The painless killing of a patient suffering from an incurable and painful disease or in an irreversible coma." also referred to as doctor assisted suicide and medical killing .

  14. PPT

    Presentation Transcript. What does euthanasia mean? • Literally means "good death". • Often called "mercy killing". • Sometimes referred to as physician (doctor) assisted suicide. British Medical Association (BMA) Guidelines • The BMA does not want euthanasia legalised. • Euthanasia goes against the role of doctors as healers.

  15. Euthanasia Template

    Euthanasia template for PowerPoint and Google Slides contains 30 editable slides that you can use for free in your presentations.

  16. Host circuit engagement of human cortical organoids ...

    The transplantation of human cortical organoids in rats enables maturation and integration of human neural cells that can engage with the host circuitry, providing a framework to study alterations ...

  17. PPT

    Pro Euthanasia • Proponents of euthanasia and physician-assisted suicide (PAS) contend that terminally ill people should have the right to end their suffering with a quick, dignified, and compassionate death. They argue that the right to die is protected by the same constitutional safeguards that guarantee such rights as marriage, procreation ...