Medicolegal Autopsies — MCQs

Medicolegal Autopsies Indian Medical PG Practice Questions and MCQs

Question 151: When should exhumation be performed?

A. Early morning (Correct Answer)
B. Evening
C. Any time
D. Night

Explanation: ***Early morning*** - Exhumations are typically performed in the **early morning hours** to avoid onlookers and ensure privacy for the delicate procedure. - This timing also allows for the **optimal use of daylight** for examination and minimizes exposure to heat or extreme weather conditions later in the day. *Evening* - Performing exhumation in the evening can significantly **reduce available daylight**, making the examination of remains and scene documentation more challenging. - It may also attract more public attention and scrutiny, which is generally avoided for such sensitive procedures. *Any time* - While legally exhumation can proceed at various times with proper authorization, performing it at "any time" lacks consideration for **practicalities and ethical concerns**. - **Optimal conditions** (e.g., daylight, minimal public presence) are crucial for thorough and respectful investigation, which are not guaranteed at just "any time." *Night* - Exhumation at night presents significant challenges due to **limited visibility**, which can compromise the detailed examination of the grave site and remains. - The use of artificial lighting may create shadows and hinder the discovery of subtle evidence, impacting the overall accuracy of the investigation.

Question 152: 'Cot death' is associated with

A. Negative autopsy (Correct Answer)
B. Summer season
C. Age group above 2 years
D. Female sex

Explanation: ***Negative autopsy*** - **Sudden Infant Death Syndrome (SIDS)**, often referred to as 'cot death', is a diagnosis of exclusion, meaning it is applied when a thorough **investigation** and **autopsy** fail to identify a cause of death. - This characteristic "negative autopsy" is a defining feature, signifying that the death remains unexplained even after exhaustive medical and forensic examination. *Summer season* - SIDS incidence tends to be higher in the **winter months**. This is possibly due to factors like increased respiratory infections or overheating from bundling infants in colder weather. - The **summer season** does not correlate with an increased risk of SIDS. *Age group above 2 years* - SIDS primarily affects infants, with the majority of cases occurring between **2 and 4 months of age**. - It is extremely rare in children older than **1 year**, and virtually unheard of beyond 2 years. *Female sex* - SIDS shows a slight predilection for **male infants**. - While not a strong differentiator, the **female sex** is not considered a risk factor or associated with increased incidence of SIDS.

Question 153: During autopsy for virology study which agent is used for storing tissue:

A. Alcohol
B. Rectified spirit
C. Sodium chloride
D. 50% glycerine (Correct Answer)

Explanation: ***50% glycerine*** - **Glycerine** is commonly used for preserving tissues for virological studies because it helps to maintain viral viability by preventing **desiccation** and **denaturation** of viral particles. - It acts as a **cryoprotectant**, stabilizing cell membranes and protein structures, which is crucial for subsequent **viral isolation** and detection. *Alcohol* - **Alcohol** acts as a **fixative** by denaturing proteins and dehydrating tissues, which would inactivate most viruses and make them unsuitable for viability studies. - While useful for histopathology, it is not appropriate for preserving viral infectivity or integrity. *Rectified spirit* - **Rectified spirit** is a highly concentrated form of alcohol (typically 95% ethanol), and like alcohol, it causes **protein denaturation** and **dehydration**. - This property makes it unsuitable for preserving viral viability for subsequent virological studies. *Sodium chloride* - **Sodium chloride** alone in isotonic solutions can maintain tissue hydration but does not provide adequate **viral stabilization** or protection against degradation. - It would not prevent **enzymatic degradation** or maintain viral infectivity over time, especially at room temperature.

Question 154: Method of autopsy in which organs of various systems are removed en masse:

A. Lettulle (Correct Answer)
B. Virchow
C. Rokitansky
D. Ghon

Explanation: ***Lettulle*** - The **Lettulle method** (or en masse method) involves the removal of organs in large blocks or as a single unit, which helps preserve anatomical relationships. - This technique is particularly useful for studying the **interrelationships between organs** and the spread of disease involving multiple systems. *Virchow* - The **Virchow method** involves the individual removal of each organ, which allows for detailed examination of each organ separately. - This method is straightforward but can disrupt the **anatomical relationships** between organs. *Rokitansky* - The **Rokitansky method** involves *in situ* dissection of organs, with the organs remaining largely in the body during dissection. - This technique is valued for maintaining the **topographical integrity** of organ systems within the body cavity. *Ghon* - The **Ghon method** is a modified block dissection method, focusing on the removal of specific organ blocks. - This often includes the **thoracic and abdominal organs** together, maintaining their anatomical connections.

Question 155: A body found in water shows signs of washerwoman's hands. What does this suggest?

A. Prolonged submersion in water (Correct Answer)
B. Death by drowning
C. Recent death from other causes
D. Brief submersion after death

Explanation: ***Prolonged submersion in water*** - **Washerwoman's hands** (or **postmortem wrinkling**) result from the **absorption of water** by the epidermis, causing it to swell and become wrinkled. - This change is indicative of a body having been submerged in an aqueous environment for an **extended period** (typically several hours or more), irrespective of the cause of death. - The key diagnostic feature is the **duration of submersion**, not whether death occurred before or after entering the water. *Death by drowning* - While drowning involves submersion, **washerwoman's hands** are a sign of **prolonged immersion**, not specifically the mechanism of death itself. - Washerwoman's hands can occur in bodies placed in water after death from other causes, so this finding does not prove drowning. *Recent death from other causes* - **Washerwoman's hands** are a postmortem change requiring **several hours** for water absorption, thus ruling out a **recent death**. - Other signs like **lividity** and **rigor mortis** would be more indicative of a recent death, depending on the timeline. *Brief submersion after death* - **Washerwoman's hands** require **prolonged immersion** (typically 2-4 hours for hands, 12-24 hours for feet) to develop. - A body submerged for only a brief time after death would not exhibit this phenomenon, as insufficient time has elapsed for epidermal water absorption and wrinkling to occur.

Question 156: During autopsy of a fetal death case, what is the correct order of examination to differentiate between live birth and stillbirth?

A. Thorax > head > abdomen
B. Abdomen > thorax > head
C. Thorax > abdomen > head
D. Head > thorax > abdomen (Correct Answer)

Explanation: ***Head > thorax > abdomen*** - The **head** is examined first to preserve delicate structures and avoid artifactual changes that could obscure signs of **intrauterine pathology** or **trauma** related to birth. - After the head, the **thorax** is examined to assess the lungs for signs of **air insufflation** (indicating respiration) and the presence of **congenital anomalies** or injuries. *Thorax > head > abdomen* - Examining the **thorax** before the head may introduce artifacts to the head, such as **hemorrhage** or **tissue distortion**, compromising the investigation of **cephalic injuries** or malformations crucial for distinguishing **live birth** from **stillbirth**. - **Head injuries** or **intracranial bleeds** are often critical in determining the mode of delivery or potential trauma, so their undisturbed assessment is prioritized. *Abdomen > thorax > head* - Beginning with the **abdomen** risks significant disruption to the **thoracic** and **cephalic** structures as a consequence of handling and evisceration, potentially obscuring vital evidence of **respiration** or **birth trauma**. - The integrity of the **head** and **thorax** is paramount for identifying subtle macroscopic and microscopic findings that definitively point to a **live birth**, such as **pulmonary aeration** or **intracranial hemorrhages**. *Thorax > abdomen > head* - This sequence is suboptimal because starting with the **thorax** and then the **abdomen** still leaves the **head** vulnerable to post-mortem changes and handling artifacts due to the initial dissections. - Critical evidence in the head pertaining to **neurological insult** or **traumatic injury** during birth might be overlooked or misinterpreted if not examined early in a pristine state.

Question 157: Which term refers to the stiffening of muscles immediately after death, typically in cases of sudden and violent death?

A. Algor mortis
B. Rigor mortis
C. Cadaveric spasm (Correct Answer)
D. Livor mortis

Explanation: ***Cadaveric spasm*** - This phenomenon, also known as **instantaneous rigor**, is characterized by the immediate and persistent stiffening of muscles at the moment of death. It occurs without the flaccid stage seen with rigor mortis. - It is typically associated with deaths involving intense **emotional stress**, **violent action**, or **sudden loss of consciousness**, such as drowning, suicide, or combat, and can indicate the position or action of the deceased at the time of death. *Algor mortis* - This refers to the **cooling of the body** after death, a gradual process that helps in estimating the time of death, but does not involve muscle stiffening. - The body temperature progressively approaches the **ambient temperature** following death. *Rigor mortis* - This is the **stiffening of muscles** that develops **gradually** after death, typically setting in 2-6 hours after death, reaching its maximum at 12-24 hours, and then gradually disappearing. - It results from the **depletion of ATP**, preventing the dissociation of actin and myosin filaments in muscle fibers. *Livor mortis* - This is the **purplish discoloration** of the skin that occurs after death due to the gravitational pooling of blood in the capillaries, seen in dependent parts of the body. - It can help in determining the **position of the body** at the time of death and if the body has been moved.

Question 158: A middle-aged man is found dead with a gunshot wound to the chest. Which type of autopsy incision is most appropriate for a detailed examination?

A. Y-shaped incision (Correct Answer)
B. I-shaped incision
C. S-shaped incision
D. U-shaped incision

Explanation: ***Y-shaped incision*** - The **Y-shaped incision** is the most common and appropriate incision in forensic autopsies, especially for cases involving the chest and abdomen, as it provides excellent exposure to both. - It involves incisions extending from the shoulders meeting at the sternum, and then continuing down to the pubic bone, allowing for thorough examination of **thoracic and abdominal organs** and major vessels for evidence of injury. *I-shaped incision* - An **I-shaped incision** runs directly from the sternal notch to the pubic symphysis, offering good access to internal organs but is less cosmetically favorable and offers less lateral chest wall exposure. - This incision is primarily used for **organ harvesting** or in situations where cosmetic appearance post-mortem is not a major concern. *S-shaped incision* - The **S-shaped incision** is sometimes used in specific cases to avoid certain areas or for better cosmetic closure but is not standard for comprehensive forensic autopsies, especially for trauma. - It does not provide the broad and symmetrical exposure needed for a detailed investigation of a **gunshot wound to the chest**. *U-shaped incision* - A **U-shaped incision** is primarily used for specific examinations, often involving the scalp to expose the skull, and is not suitable for opening the chest and abdomen. - This incision is typically reserved for accessing the **cranial cavity** during an autopsy.

Question 159: In a forensic investigation, what does the presence of fixed livor mortis indicate about the time elapsed since death?

A. More than 12 hours (Correct Answer)
B. More than 24 hours
C. 12-24 hours
D. Less than 12 hours

Explanation: ***More than 12 hours*** - **Fixed (non-blanching) livor mortis** indicates that the pooling of blood in dependent capillaries has become permanent and will not blanch with pressure. - Fixation of livor mortis typically occurs between **8-12 hours post-mortem**, meaning that the presence of fixed livor mortis indicates death occurred **more than 12 hours ago**. - Once fixed, livor mortis remains permanent indefinitely (through 24 hours, 48 hours, and beyond), making "more than 12 hours" the most accurate answer for when fixed livor mortis is present. *Less than 12 hours* - Within the first **8-12 hours**, livor mortis is typically still **unfixed (blanching)**, meaning the discolored areas will blanch when pressure is applied. - The pooling of blood in this early phase is still responsive to external pressure, making it non-fixed and thus distinguishing it from the later fixed stage. - Therefore, the presence of **fixed** livor mortis rules out a time frame of less than 12 hours. *12-24 hours* - While fixed livor mortis is indeed present during the 12-24 hour period, this time frame is **too narrow**. - Fixed livor mortis, once established (by 8-12 hours), remains fixed indefinitely - at 24 hours, 48 hours, and even during early decomposition. - The question asks what fixed livor mortis indicates, not when it first becomes fixed, making the broader time frame "more than 12 hours" more accurate. *More than 24 hours* - This is **too restrictive** - fixed livor mortis is already well-established by 12-24 hours post-mortem. - By excluding the 12-24 hour period, this option incorrectly suggests that fixed livor mortis only appears after 24 hours. - While other post-mortem changes like decomposition become more prominent after 24 hours, fixed livor mortis alone indicates death occurred more than 12 hours ago, not necessarily more than 24 hours.

Question 160: Which of the following methods is not typically used in autopsy procedures?

A. Virchow method
B. Lettulle method
C. Thomas method (Correct Answer)
D. Rokitansky method

Explanation: ***Thomas method*** - The **Thomas method** is **not a recognized autopsy dissection technique** in forensic medicine. - Only three classical methods are standardized for medicolegal autopsies: Virchow, Rokitansky, and Lettulle. - This is the correct answer as it does not exist as a typical autopsy procedure. *Virchow method* - The **Virchow method** (organ-by-organ technique) is one of the three classical autopsy methods. - Involves removing and dissecting each organ individually. - Useful for identifying localized pathology, though it may disrupt anatomical relationships. *Lettulle method* - The **Lettulle method** (en masse technique) is one of the three classical autopsy methods. - Entails removing all thoracoabdominal organs as a single block, then dissecting them together. - Preserves anatomical relationships and is beneficial for studying organ system interactions. *Rokitansky method* - The **Rokitansky method** (in situ technique) is one of the three classical autopsy methods. - Involves dissection of organs in their natural position by organ systems before removal. - Allows detailed inspection of anatomical relationships within the body cavity.

Practice by Chapter

Objectives of Medicolegal Autopsy

Practice Questions

Autopsy Procedures

Practice Questions

External Examination

Practice Questions

Internal Examination

Practice Questions

Special Autopsy Techniques

Practice Questions

Organ Retention and Disposal

Practice Questions

Collection of Toxicological Samples

Practice Questions

Autopsy Report Writing

Practice Questions

Histopathology in Autopsies

Practice Questions

Microbiology in Autopsies

Practice Questions

Radiology in Autopsies

Practice Questions

Limitations and Artifacts

Practice Questions

Want unlimited practice?

Get full access to all questions, explanations, and performance tracking.

Start For Free