Asphyxial Deaths Practice Questions

Q: Burking consists of which of the following?

Smothering and traumatic asphyxia. **Explanation:** **Burking** is a specific method of homicidal asphyxia named after the infamous 19th-century serial killers Burke and Hare. It was designed to kill victims without leaving obvious external marks of violence, making the bodies suitable for anatomical sale. **Why Option A is Correct:** Burking involves a two-step mechanism: 1. **Smothering:** The perpetrator closes the victim's mouth and nose with their hands. 2. **Traumatic Asphyxia:** The perpetrator sits or kneels on the victim’s chest (chest compression), preventing respiratory movements. The combination of these two mechanisms leads to rapid death by hypoxia. **Why Other Options are Incorrect:** * **Option B:** Choking involves internal airway obstruction (e.g., a foreign body), and drowning involves fluid inhalation. Neither is part of the Burking technique. * **Option C:** Gagging is the use of a cloth or object inside the mouth to prevent speech or breathing; while it causes smothering, it lacks the characteristic chest compression of Burking. * **Option D:** Traumatic asphyxia is only half of the process. Without simultaneous smothering, it does not constitute Burking. **High-Yield Pearls for NEET-PG:** * **Post-mortem findings:** Classically, there are **minimal external signs** of struggle or injury. Internally, one may find **Petechial hemorrhages** (Tardieu spots) on the lungs and heart, and occasionally fractured ribs or bruising of the intercostal muscles. * **Motive:** Historically associated with "body snatching" for medical dissection. * **Differential Diagnosis:** Must be distinguished from **Traumatic Asphyxia** (e.g., crush injuries in stampedes) where only chest compression is present.

Q: Which of the following is NOT true about hydrocution?

Electrocution in water. **Explanation:** **Hydrocution** (also known as Immersion Syndrome) is a form of atypical drowning. The correct answer is **Option A** because hydrocution is **not** electrocution in water; rather, it is a physiological response to sudden cold-water immersion. 1. **Why Option A is the correct answer (The Concept):** Hydrocution occurs due to the sudden impact of cold water on the body, particularly the nasal mucosa and the back of the throat (pharynx). This triggers a **vagal reflex**, leading to immediate **cardiac arrest**. It has nothing to do with electricity or electric shocks. 2. **Analysis of other options:** * **Option B (Cardiac arrest):** This is a true statement. Unlike typical drowning where death is due to asphyxia, death in hydrocution is instantaneous due to reflex cardiac inhibition. * **Option C (Falling feet first):** This is a true statement. Falling feet first allows water to rush into the nostrils under pressure, which strongly stimulates the trigeminal and vagal nerve endings, triggering the fatal reflex. * **Option D (Emotionally tense individuals):** This is a true statement. Factors like emotional stress, a full stomach, or pre-existing cardiac conditions increase the susceptibility to this vagal inhibition. **NEET-PG High-Yield Pearls:** * **Dry Drowning:** Death occurs due to laryngeal spasm without significant water entering the lungs. * **Secondary Drowning (Near Drowning):** Death occurs 1–2 days after a near-fatal immersion due to pulmonary edema or pneumonia. * **Post-mortem finding:** In hydrocution, since death is instantaneous, classic signs of drowning (like fine froth or diatoms in bone marrow) are usually **absent**.

Q: Burking is:

Homicidal. **Explanation:** **Burking** is a specific method of **homicidal asphyxia** that combines traumatic asphyxia and gagging. The term originated from the infamous 19th-century serial killers Burke and Hare, who murdered victims to sell their bodies for anatomical dissection. **Why the correct answer is Homicidal:** The mechanism involves the assailant sitting on the victim's chest (causing **traumatic asphyxia** by restricting respiratory movements) while simultaneously closing the nose and mouth with hands (causing **smothering**). This combination is intentionally used to kill a victim without leaving obvious external marks of violence, making it a purely homicidal act. **Why the incorrect options are wrong:** * **Suicidal:** It is physically impossible for an individual to perform Burking on themselves, as it requires external pressure on the chest and simultaneous manual occlusion of the airways by another person. * **Accidental:** While traumatic asphyxia can occur accidentally (e.g., in stampedes or cave-ins), the specific combination of chest compression and manual smothering characteristic of Burking is a deliberate, orchestrated act of murder. **High-Yield Facts for NEET-PG:** * **Mechanism:** Smothering + Traumatic Asphyxia. * **Autopsy Findings:** Often unremarkable ("Negative Autopsy") because the pressure is distributed. One may find classic signs of asphyxia (Pechial hemorrhages, cyanosis, visceral congestion) but few external injuries. * **Target Victims:** Usually the elderly, children, or those debilitated by alcohol/illness, as they cannot resist the weight on their chest. * **Related Term:** **"Cafe Coronary"** (Accidental choking on food) is a common distractor in asphyxia questions—do not confuse it with Burking.

Q: Which of the following is used for determining time since death by algor mortis?

Henssge nomogram. **Explanation:** **Henssge’s Nomogram** is the most reliable method for estimating the time since death (TSD) using **Algor Mortis** (post-mortem cooling). It utilizes a mathematical relationship between the rectal temperature, the ambient (environmental) temperature, and the body weight. It also incorporates "correction factors" for variables that affect cooling, such as clothing, air movement, or immersion in water. **Analysis of Options:** * **A. Madea’s Formula:** This is used to estimate TSD based on **Vitreous Potassium** levels, not body temperature. It is particularly useful when the body is in the early stages of decomposition. * **B. Calorimetry Formula:** While calorimetry measures heat, it is not a standard forensic term for TSD. The standard formula used for cooling is **Marshall and Hoare’s** or the simplified **Rule of Thumb** (0.5–0.7°C/hour). * **C. Nysten’s Rule:** This relates to **Rigor Mortis**. It describes the sequential progression of muscle stiffening, starting from the eyelids and face, moving downwards to the lower limbs. **High-Yield Pearls for NEET-PG:** * **Glaister’s Formula:** A classic formula for TSD: $(Normal\ Body\ Temp - Rectal\ Temp) / 1.5$. * **Site of Measurement:** The most accurate site for recording core temperature is the **rectum** (inserted 8–10 cm). Other sites include the liver (sub-hepatic) and the external auditory canal. * **The "Plateau Phase":** Immediately after death, the body temperature does not drop for the first 1–3 hours; this is known as the *temperature lag period*. * **Environmental Impact:** Algor mortis is the most useful sign of death in the first 12–18 hours, but it is highly dependent on the temperature gradient between the body and the surroundings.

Question 1

Burking consists of which of the following?

Accepted Answer

Smothering and traumatic asphyxia

Answer

Choking and drowning

Answer

Gagging only

Answer

Traumatic asphyxia only

Question 2

Which of the following is NOT true about hydrocution?

Accepted Answer

Electrocution in water

Answer

Death results from cardiac arrest

Answer

Results from falling in the water feet first

Answer

Emotionally tense individuals are prone to this

Question 3

Burking is:

Accepted Answer

Homicidal

Answer

Suicidal

Answer

Accidental

Answer

None of the above

Question 4

Which of the following is used for determining time since death by algor mortis?

Accepted Answer

Henssge nomogram

Answer

Madea's formula

Answer

Calorimetry formula

Answer

Nysten's rule

Question 5

Maximum congestion is seen in which of the following conditions?

Accepted Answer

Strangulation

Answer

Choking

Answer

Hanging

Answer

Drowning

Question 6

Pseudo ligature marks are seen in all the following conditions except?

Accepted Answer

Ligature strangulation

Answer

Obese persons

Answer

Infants

Answer

Tight jewellery

Question 7

Death in hanging occurs due to all the following mechanisms EXCEPT?

Accepted Answer

Vagal stimulation

Answer

Asphyxia

Answer

Vagal inhibition

Answer

Cerebral ischemia

Question 8

Suspended animation may be seen in which of the following conditions?

Accepted Answer

Rape

Answer

Electrocution

Answer

Morphine poisoning

Answer

Strangulation

Question 9

Which feature is indicative of anti-mortem drowning?

Accepted Answer

Grass and weeds grasped in the hand

Answer

Cutis anserina

Answer

Rigor mortis

Answer

Washerwoman's feet

Question 10

What is the most common structure fractured in ligature strangulation?

Accepted Answer

Cornua of Thyroid cartilage

Answer

Hyoid bone

Answer

Ala of Thyroid cartilage

Answer

Cricoid cartilage

Asphyxial Deaths — MCQs

Asphyxial Deaths — MCQs

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