Ethical Issues in Transplantation — MCQs
Which of the following statements regarding rejection of solid organ transplants is true?
Which of the following is the POOREST recipient bed for a skin graft?
Which of the following statements is false regarding the declaration of brain stem death in a hospital?
Type of inquest conducted in dowry death is
Police inquest is NOT required in:
Which of the following is the most appropriate term for a graft when the donor and recipient are identical twins?
Transplant of a kidney from a mother to a son is an example of:
In which of the following circumstances is a police inquest typically NOT required?
Dr. Christiaan Barnard performed the 1st heart transplant in the year -
In discussing the treatment of a 42-year-old man with severe liver cirrhosis, the possibility of heterotopic transplantation is considered. Which statement about heterotopic liver transplantation is TRUE?
Ethical Issues in Transplantation Indian Medical PG Practice Questions and MCQs
Question 1: Which of the following statements regarding rejection of solid organ transplants is true?
- A. Most immunosuppressive medications are used to prevent chronic rejection
- B. The major cause of graft failure is acute rejection
- C. Liver transplants are especially susceptible to hyperacute rejection
- D. Hyperacute rejection begins in the operating room with reperfusion of the transplanted organ (Correct Answer)
Explanation: ***Hyperacute rejection begins in the operating room with reperfusion of the transplanted organ*** - **Hyperacute rejection** is a rapidly-occurring immune response that starts almost immediately after the transplanted organ is re-vascularized, often while the patient is still in the operating room [1]. - This type of rejection is mediated by **pre-formed antibodies** (e.g., ABO blood group antibodies or anti-HLA antibodies) in the recipient's circulation that bind to antigens on the donor organ's endothelium, leading to massive thrombosis and organ destruction [1]. *Most immunosuppressive medications are used to prevent chronic rejection* - While immunosuppressants play a role in mitigating **chronic rejection**, their primary and most effective targets are **acute rejection episodes** and the initial prevention of organ rejection [2]. - **Chronic rejection** is often a more complex process involving both immune and non-immune factors, and current immunosuppressive regimens are less effective at completely preventing or reversing it compared to acute rejection. *The major cause of graft failure is acute rejection* - In the long term, **chronic rejection** (or chronic allograft dysfunction) is the leading cause of late graft loss, rather than acute rejection. - With advancements in immunosuppression, **acute rejection rates** have significantly decreased, making chronic issues and non-immune factors more prominent in overall graft failure. *Liver transplants are especially susceptible to hyperacute rejection* - **Liver transplants** are notably more tolerant to ABO and HLA mismatches compared to other solid organ transplants (like kidney or heart). - This relative immunotolerance means that **hyperacute rejection** is far less common in liver transplantation. **References:** [1] Kumar V, Abbas AK, et al.. Robbins and Cotran Pathologic Basis of Disease. 9th ed. Diseases of the Immune System, pp. 241-242. [2] Cross SS. Underwood's Pathology: A Clinical Approach. 6th ed. (Basic Pathology) introduces the student to key general principles of pathology, both as a medical science and as a clinical activity with a vital role in patient care. Part 2 (Disease Mechanisms) provides fundamental knowledge about the cellular and molecular processes involved in diseases, providing the rationale for their treatment. Part 3 (Systematic Pathology) deals in detail with specific diseases, with emphasis on the clinically important aspects., pp. 180-181.
Question 2: Which of the following is the POOREST recipient bed for a skin graft?
- A. Fat (Correct Answer)
- B. Muscle
- C. Deep fascia
- D. Skull bone
Explanation: ***Fat*** - **Fat** is a poor recipient for a skin graft due to its **limited vascularity**, which hinders the necessary process of revascularization for graft survival. - The high metabolic demand of a graft cannot be adequately met by the relatively avascular subcutaneous fat, leading to graft failure. *Muscle* - **Muscle tissue** is an excellent recipient bed for skin grafts due to its **rich blood supply**. - Its robust vascularity effectively supports the revascularization and survival of the grafted tissue. *Deep fascia* - **Deep fascia** provides a good vascularized bed for skin grafts, as it has a reasonable blood supply from underlying muscles and surrounding tissues. - This vascularization is sufficient to nourish and ensure the take of a skin graft. *Skull bone* - **Skull bone** (specifically the periosteum covering it) can serve as an adequate graft bed due to its vascular supply. - If the **periosteum** is intact and healthy, it offers sufficient blood flow for graft survival.
Question 3: Which of the following statements is false regarding the declaration of brain stem death in a hospital?
- A. Presence of neurologist is not required
- B. Drug overdose should be ruled out
- C. All of the above (Correct Answer)
- D. Patient must be in coma
Explanation: ***All of the above*** - This option indicates that all the preceding statements are false. Let's analyze why each individual statement is indeed false in the context of brain stem death declaration [1]. - This implies there is a misunderstanding regarding each aspect of brain stem death criteria, which often requires specific conditions like a neurologist's involvement (though not always strictly mandatory in all protocols), ruling out drug overdose, and the patient being in a coma. *Presence of neurologist is not required* - This statement is false because while it's not universally mandated that a neurologist be one of the two certifying doctors, one of them must be a **senior physician (consultant)** and both must be experienced in brain stem death diagnosis. - In many settings, especially for complex cases or where local protocols specify, a neurologist or neurosurgeon's involvement is highly recommended or required to confirm brain stem death. *Drug overdose should be ruled out* - This statement is false because the absence of drugs that could **mimic brain stem death (e.g., sedatives, muscle relaxants)** is a crucial precondition for testing [3]. - It is essential to ensure that the patient's neurological state is not confounded by reversible causes like drug intoxication before proceeding with brain stem death tests [3]. *Patient must be in coma* - This statement is false because while a patient declared brain stem dead will indeed be in a coma, the criteria for **brain stem death** specifically focus on the irreversible cessation of brainstem function [1], not merely a comatose state [2]. - A coma is a precondition for assessing brain stem death, but the declaration itself requires specific tests demonstrating the absence of **brainstem reflexes** [4] and **apnea** [3], confirming the permanent loss of brainstem activity.
Question 4: Type of inquest conducted in dowry death is
- A. Coroner's inquest
- B. Police inquest (Correct Answer)
- C. Magistrate inquest
- D. Medical examiner's inquest
Explanation: ***Police inquest*** - In dowry death cases, a **police inquest** is mandatory under Section 174 of the **Criminal Procedure Code (CrPC)** when the cause of death is suspicious or unnatural and involves a woman within seven years of marriage. - The police investigate the circumstances surrounding the death to determine if it was due to **dowry-related harassment** or other foul play. *Coroner's inquest* - A **coroner's inquest** is a judicial inquiry to determine the cause of death, typically conducted in jurisdictions that have a coroner system (e.g., some parts of the UK, USA). - This system is generally **not prevalent in India**, where dowry deaths are governed by specific sections of the CrPC and Indian Penal Code (IPC). *Magistrate inquest* - A **magistrate inquest** (under Section 176 CrPC) is conducted by an Executive Magistrate only in specific circumstances, such as custodial deaths, deaths in police firing, or when the police officer is accused of having caused the death. - While it can be ordered in some unnatural deaths, it's not the primary or exclusive type of inquest prescribed for typical dowry deaths unless further statutory conditions are met. *Medical examiner's inquest* - A **medical examiner's inquest** is conducted by a medical examiner, a legally qualified medical doctor specializing in forensic pathology. This system is similar to the coroner system, often used in parts of the USA. - In India, the investigation primarily involves **police procedures** and civil or judicial magistrates, rather than medical examiners.
Question 5: Police inquest is NOT required in:
- A. Suicide
- B. Murder
- C. Death in police custody
- D. Natural death due to disease in elderly person at home (Correct Answer)
Explanation: ***Natural death due to disease in elderly person at home*** - Police inquest is **NOT required** for natural deaths occurring at home with a known medical condition - A registered medical practitioner who has been attending the deceased can issue a death certificate - No suspicion of foul play or unnatural circumstances exists - This is the only scenario among the options where police involvement is not mandated *Death in police custody* - Police inquest is **absolutely required** under **Section 176 CrPC** (mandatory magisterial inquiry) - Custodial deaths are considered highly sensitive and require thorough investigation - Ensures accountability and rules out torture, negligence, or human rights violations - Automatic judicial oversight is mandated by law *Suicide* - Police inquest is **required** as suicide is classified as an **unnatural death** - Investigation needed to confirm manner of death and rule out homicide - Section 174 CrPC mandates police investigation for all unnatural deaths - Documentation required for legal and insurance purposes *Murder* - Police inquest is **absolutely required** as murder is a **criminal homicide** - Section 174 CrPC mandates immediate police investigation - Crime scene examination, evidence collection, and suspect identification are essential - Forms the basis for criminal prosecution under IPC Section 302
Question 6: Which of the following is the most appropriate term for a graft when the donor and recipient are identical twins?
- A. Xenograft
- B. Allograft
- C. Isograft (Correct Answer)
- D. Autograft
Explanation: ***Isograft*** - An **isograft** refers to a transplant where the donor and recipient are **genetically identical**, such as in the case of **identical twins**. - Due to their identical genetic makeup, there is typically **no immune rejection** of the graft, as the recipient's immune system recognizes the donor's tissues as "self." *Xenograft* - A **xenograft** involves grafting tissue from a donor of **one species to a recipient of another species**, such as porcine heart valves transplanted into humans. - These grafts often face significant **immune rejection** due to the large genetic differences between species. *Allograft* - An **allograft** is a transplant between **two genetically non-identical individuals of the same species**, such as an organ transplant between unrelated humans. - These grafts require **immunosuppressive therapy** to prevent rejection, as the recipient's immune system will recognize the donor's tissue as foreign. *Autograft* - An **autograft** involves transplanting tissue from **one part of an individual's body to another part of the same individual's body**, such as a skin graft from the thigh to the arm. - Since the tissue comes from the same individual, there is **no risk of immune rejection**.
Question 7: Transplant of a kidney from a mother to a son is an example of:
- A. Autograft
- B. Allograft (Correct Answer)
- C. Isograft
- D. Xenograft
Explanation: ***Allograft*** - An **allograft** involves the transplantation of organs or tissues between genetically non-identical individuals of the **same species**, such as between a mother and her son. - While they are related, they are not genetically identical, necessitating methods to prevent **graft rejection**. *Autograft* - An autograft involves transplanting tissues or organs **within the same individual**, for example, skin graft from one part of the body to another. - This scenario describes a transplant between two different individuals (mother and son). *Isograft* - An isograft (or syngeneic graft) is a transplant between **genetically identical individuals**, such as identical twins. - A mother and a son are not genetically identical, so this term does not apply. *Xenograft* - A xenograft is a transplant of organs or tissues between individuals of **different species**, such as from a pig to a human. - This scenario involves a transplant between two humans, who are of the same species.
Question 8: In which of the following circumstances is a police inquest typically NOT required?
- A. Death by animals (Correct Answer)
- B. Death by accident
- C. Suicide
- D. Dowry death
Explanation: ***Death by animals*** - While tragic, deaths caused solely by animals are generally considered accidental and **do not typically raise immediate suspicions of criminality** requiring a police inquest. - The circumstances usually don't indicate the need to determine responsibility or external foul play in the same way as other violent or suspicious deaths. *Death by accident* - Police inquests are generally required for deaths by accident to determine if there was any **negligence, foul play, or violation of laws** leading to the death. - This ensures that proper investigation occurs and accountability can be established if warranted, especially in cases like **road traffic accidents or industrial mishaps**. *Suicide* - Suicides always require a police inquest to rule out any **foul play or abetment** that might have led to the individual taking their own life. - The investigation aims to confirm the cause of death and determine if any third party was involved or responsible. *Dowry death* - Dowry deaths are inherently suspicious and require a mandatory police inquest to investigate if the death was caused by **harassment, cruelty, or murder related to dowry demands**. - These cases are considered homicidal until proven otherwise due to the specific legal and social context surrounding them.
Question 9: Dr. Christiaan Barnard performed the 1st heart transplant in the year -
- A. 1962
- B. 1965
- C. 1969
- D. 1967 (Correct Answer)
Explanation: ***1967*** - Dr. Christiaan Barnard performed the **first human heart transplant** on December 3, 1967, at Groote Schuur Hospital in Cape Town, South Africa. - The recipient, Louis Washkansky, lived for 18 days after the surgery. *1962* - While significant advancements in medicine occurred in 1962, the **first heart transplant** had not yet been performed. - This year saw the approval of the **measles vaccine** and the publication of Rachel Carson's "Silent Spring," but not the seminal heart transplant. *1965* - The year 1965 was a period of continued research and experimentation in organ transplantation, but the **first successful human heart transplant** took place later. - Prior to 1967, xenotransplantation experiments in humans involving animal hearts were attempted, but a human-to-human transplant was still pending. *1969* - By 1969, **several hundred heart transplants** had already been performed worldwide following Barnard's pioneering surgery. - Dr. Denton Cooley performed the **first implantation of a total artificial heart** in a human in 1969, indicating that heart transplantation was already established.
Question 10: In discussing the treatment of a 42-year-old man with severe liver cirrhosis, the possibility of heterotopic transplantation is considered. Which statement about heterotopic liver transplantation is TRUE?
- A. It is preferable to orthotopic liver transplantation.
- B. It is rarely associated with long-term survival.
- C. It implies removal of the recipient's liver.
- D. It should be done in the iliac vessels. (Correct Answer)
Explanation: ***It should be done in the iliac vessels.*** - **Heterotopic liver transplantation** involves placing the donor liver in an ectopic location (typically in the right lower abdomen or pelvis) while the native liver remains in situ. - Vascular anastomosis is commonly performed using the **iliac vessels** (external or common iliac artery and vein) or infrarenal IVC and aorta for blood supply to the graft. - This is a **largely historical procedure** that has been mostly abandoned due to technical complexity, high complication rates, and poor long-term outcomes compared to orthotopic transplantation. *It is preferable to orthotopic liver transplantation.* - **Orthotopic liver transplantation (OLT)**, where the diseased liver is completely removed and replaced, is the **gold standard** for end-stage liver disease. - OLT provides superior long-term outcomes, complete removal of the diseased organ, and eliminates competition between native and donor liver function. - Heterotopic transplantation is **not preferable** and has been largely abandoned in modern practice. *It is rarely associated with long-term survival.* - This statement has historical validity—heterotopic liver transplantation was indeed associated with **poor long-term outcomes**, which is a major reason the procedure was largely discontinued. - Complications included vascular thrombosis, competition between native and donor liver, portal hypertension, and technical difficulties. - However, in the context of this question, the statement about iliac vessels is more specifically correct regarding the technical aspect of the procedure. *It implies removal of the recipient's liver.* - **Incorrect**—the defining feature of **heterotopic transplantation** is that the **native liver is left in place**. - Removal of the recipient's liver is characteristic of **orthotopic liver transplantation**, where the diseased organ is excised and replaced in the same anatomical location.
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