Asphyxial Deaths — MCQs

Asphyxial Deaths Indian Medical PG Practice Questions and MCQs

Question 271: A loop of thin string is thrown around the neck of the victim in what type of strangulation?

A. Throttling
B. Mugging
C. Garrotting (Correct Answer)
D. Hanging

Explanation: ***Garrotting*** - This involves strangulation where a **thin ligature** (string, wire, or cord) is **thrown around the neck from behind** and tightened by twisting or pulling. - Characterized by a **horizontal ligature mark** around the neck at the level of the thyroid cartilage. - The thin ligature causes **prominent, well-defined ligature marks** and can cause severe damage to underlying neck structures. - Historically used as a method of execution and assassination. *Throttling* - **Manual strangulation** using hands, where the neck is compressed by fingers, thumbs, or palms. - Leaves **fingernail marks, bruises, and abrasions** on the neck rather than a continuous ligature mark. - May show **fingerprint-pattern bruising** and is typically associated with homicidal violence. *Mugging* - In forensic contexts, this refers to an **arm choke** or **headlock strangulation** where the forearm or elbow is placed around the victim's neck. - Also called **brachial strangulation** or **chokehold**. - Distinguished from garrotting by the use of the **arm as the constricting force** rather than a ligature. *Hanging* - Suspension of the body by a ligature around the neck where **body weight provides the constricting force**. - Ligature mark is typically **oblique and higher on the neck**, ascending toward the point of suspension. - Usually shows a **knot mark** and is most commonly suicidal in nature.

Question 272: Cutis anserina is seen in:

A. Suffocation (lack of oxygen)
B. Electrocution (burn injuries)
C. Lust murder (traumatic injuries)
D. Drowning (Correct Answer)

Explanation: ***Drowning*** - **Cutis anserina**, also known as **goosebumps**, is a common finding in bodies recovered from water, particularly in cases of drowning. - It results from the **contraction of arrector pili muscles**, often due to the body's response to cold water, which is frequently associated with drowning. *Suffocation (lack of oxygen)* - While suffocation causes profound changes due to **hypoxia**, it does not specifically induce the characteristic **arrector pili muscle contraction** that leads to cutis anserina. - Findings in suffocation typically relate to **cyanosis**, petechial hemorrhages, and signs of struggle. *Electrocution (burn injuries)* - Electrocution is characterized by **electrical burns**, sometimes with an entry and exit wound, and arrhythmias. - It does not primarily lead to cutis anserina; the body's response is dominated by the effects of electrical current. *Lust murder (traumatic injuries)* - Lust murder involves significant **traumatic injuries** often with signs of sexual violence. - The focus is on the specific injury patterns and evidence of struggle rather than physiological responses like cutis anserina.

Question 273: What is the term for the death of a person due to compression of the neck by another person?

A. Hanging
B. Strangulation
C. Manual strangulation
D. Throttling (Correct Answer)

Explanation: ***Throttling*** - **Throttling** is the specific forensic medicine term for manual strangulation by another person, directly applying compressive force to the neck. - This method of asphyxia involves the use of **hands or fingers** to obstruct airflow and blood supply to the brain. - It is the **preferred medicolegal term** to denote homicidal manual compression of the neck. *Hanging* - **Hanging** involves suspension of the body with a ligature around the neck, causing compression by the body's own weight. - It is typically a form of **suicidal or accidental death**, rather than homicide through direct manual compression. *Manual strangulation* - **Manual strangulation** is synonymous with throttling and also refers to compression of the neck by hands or fingers of another person. - While medically accurate, **"throttling" is the more specific forensic term** preferred in medicolegal practice. - This option is incorrect because the question asks for "THE term," and throttling is the standard forensic terminology. *Strangulation* - **Strangulation** is a general term for compression of the neck by any means, either manual (throttling) or by a ligature. - This term is **too broad** as it does not specify the manual method or distinguish between ligature and manual compression.

Question 274: Which of the following findings is most indicative of death by hanging?

A. Congestion and hemorrhage in lymph nodes above and below the ligature mark.
B. Tear of intima of carotid arteries without hemorrhage. (Correct Answer)
C. All of the options
D. Ligature mark without petechial hemorrhages.

Explanation: ***Tear of intima of carotid arteries without hemorrhage*** - **Intimal tears of the carotid or vertebral arteries** are considered one of the **most specific and indicative findings** of antemortem hanging in forensic pathology - These tears occur due to **sudden stretching and compression** of the neck vessels during suspension - The **absence of hemorrhage** indicates the tear occurred **at or around the time of death** (perimortem), making it highly specific for vital hanging - This finding helps distinguish **antemortem hanging from postmortem suspension** or ligature strangulation - Reported in **20-25% of hanging cases** and considered a **positive vital sign** *Congestion and hemorrhage in lymph nodes above and below the ligature mark* - While **congestion of lymph nodes** can occur due to venous obstruction, hemorrhage in lymph nodes is **not consistently reported** as a specific diagnostic feature - This finding is **less specific** than vascular injuries and can be variable - Not emphasized in standard forensic texts as a key diagnostic criterion *Ligature mark without petechial hemorrhages* - A **ligature mark alone** can be produced postmortem and is **not specific** for vital hanging - The **absence of petechial hemorrhages** makes it even less indicative of antemortem hanging - While ligature marks are expected, their presence without other vital signs (like petechiae, intimal tears, or fractures) is insufficient for definitive diagnosis *All of the options* - Not all findings are equally indicative; **intimal tears** represent the most specific pathological finding among the options listed

Question 275: In judicial hanging, where is the "knot" typically placed?

A. Below the chin
B. Behind the neck
C. Side of neck (Correct Answer)
D. Front of the neck

Explanation: ***Side of neck*** - The **knot** is typically placed on the **side of the neck** to optimize the chances of a **cervical fracture**, specifically a **hangman's fracture** (bilateral pedicle fracture of C2, with anterior subluxation of C2 on C3). - This placement, combined with a sufficient **drop**, aims to cause a rapid and **painless death** by severance of the **spinal cord** or disruption of brainstem function. *Below the chin* - Placing the knot directly **below the chin** would primarily cause **asphyxia** by compressing the trachea, leading to a slower and more painful death. - This position is less likely to achieve the rapid **cervical fracture** desired for judicial hanging. *Behind the neck* - A knot placed **behind the neck** would push the head forward, potentially compressing the airway and large vessels but less effectively causing a **neck fracture**. - This placement generally results in an inefficient and prolonged death by **strangulation or asphyxiation**. *Front of the neck* - Placing the knot in the **front of the neck** would primarily lead to **compression of the trachea and carotid arteries**, resulting in death by **asphyxia** or **cerebral ischemia**. - This position is not optimal for inducing a **cervical fracture** and would likely lead to a more traumatic or prolonged death.

Question 276: Tardieu spots are a feature of which of the following forms of death?

A. Cyanide poisoning
B. Mechanical asphyxia (Correct Answer)
C. Cobra bite
D. Organophosphate poisoning

Explanation: ***Mechanical asphyxia*** - **Tardieu spots** are **petechial hemorrhages** that occur due to increased intravascular pressure and capillary rupture, a characteristic finding in deaths caused by **mechanical asphyxia** (e.g., strangulation, hanging, traumatic asphyxia). - These spots are most commonly found in the **skin of the face and conjunctivae**, and in the pleura, pericardium, and thymus in the case of intense venous congestion from severe compression. *Cyanide poisoning* - Cyanide poisoning typically presents with a **pinkish skin color** due to high oxygen saturation in venous blood. - The characteristic odor of **bitter almonds** may be detectable. *Cobra bite* - Cobra bites are characterized by **neurotoxic effects**, leading to paralysis, respiratory failure, and ptosis. - Local effects include swelling, pain, and tissue necrosis, but not typically widespread petechial hemorrhages. *Organophosphate poisoning* - Organophosphate poisoning causes a **cholinergic crisis** with symptoms like salivation, lacrimation, urination, defecation, gastrointestinal upset, and emesis (SLUDGE syndrome) due to acetylcholinesterase inhibition. - It does not typically cause Tardieu spots as a primary post-mortem finding.

Practice by Chapter

Pathophysiology of Asphyxia

Practice Questions

Hanging

Practice Questions

Strangulation

Practice Questions

Suffocation

Practice Questions

Traumatic Asphyxia

Practice Questions

Drowning

Practice Questions

Choking

Practice Questions

Chemical Asphyxiants

Practice Questions

Positional Asphyxia

Practice Questions

Autoerotic Asphyxia

Practice Questions

Pediatric Asphyxia

Practice Questions

Postmortem Findings in Asphyxia

Practice Questions

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