Pediatric Asphyxia — MCQs
Diagnostic of antemortem drowning:
Certain obligations on the part of a doctor who undertakes a postmortem examination are the following, EXCEPT:
Tardieu spots are a feature of which of the following forms of death?
An unconscious child is brought to the casualty. What is the correct sequence of the management?
On postmortem examination, contusion of neck muscles is seen along with fracture of hyoid bone. The most probable cause of death is:
Which of the following statements about Platauf's hemorrhages is correct?
The friend and victim had alcohol and got into an argument over a common girlfriend, following which the friend kills the victim by sitting on his chest and covering his nose and mouth. This is an example of?
In which of the following rigor mortis is not seen?
A 45-year-old man is found deceased in his bedroom. Time of death needs to be established for legal purposes. The body temperature is 32°C (89.6°F), and the ambient temperature is 20°C (68°F). Rigor mortis is complete in all muscle groups. Assuming normal conditions, which of the following best estimates the postmortem interval?
A female was found dead in her bedroom. The room was not locked from inside. Her blood alcohol value was found to be 350 mg/dL. The picture taken at the post mortem is shown below. The diagnosis is? (AIIMS Nov 2018, AIIMS Nov 2017)
Pediatric Asphyxia Indian Medical PG Practice Questions and MCQs
Question 1: Diagnostic of antemortem drowning:
- A. Emphysema aquosum
- B. Paltaufs hemorrhage
- C. Water in esophagus
- D. Presence of foreign material in clenched hands (Correct Answer)
Explanation: ***Presence of foreign material in clenched hands.*** - The presence of **foreign material** (such as weeds, sand, or gravel) in the **clenched hands** of a drowned victim suggests a struggle for survival while alive in the water. - This finding is strong evidence of **vital reaction**, indicating the individual was alive and actively struggling during submergence, making it highly indicative of antemortem drowning. *Emphysema aquosum* - Refers to **overinflation of the lungs** and is a common finding in drowning, resulting from fluid aspiration and spasmodic respiratory efforts. - While supportive of drowning, it can also be seen in other forms of **asphyxia** and is not specific enough to definitively diagnose antemortem drowning versus postmortem immersion. *Paltaufs hemorrhage* - Describes **subpleural hemorrhages** found on the lungs, often seen in cases of drowning. - These hemorrhages are a non-specific sign and can be present in other causes of death involving **venous congestion** or **asphyxia**, thus not definitive for antemortem drowning. *Water in esophagus* - While the aspiration of water is a hallmark of drowning, finding water in the **esophagus** (and stomach) can occur in both antemortem and **postmortem immersion**. - This finding alone does not reliably distinguish between someone who was alive and swallowed water during drowning versus someone who was dead and immersed in water.
Question 2: Certain obligations on the part of a doctor who undertakes a postmortem examination are the following, EXCEPT:
- A. Routinely record all positive findings and important negative ones
- B. He must keep the police informed about the findings (Correct Answer)
- C. The examination should be meticulous and complete
- D. He must preserve viscera and send for toxicology examination in case of poisoning
Explanation: ***He must keep the police informed about the findings*** - This is **NOT a formal obligation** of the doctor conducting a postmortem examination. - The doctor's primary duty is to conduct a thorough, objective examination and prepare a **formal postmortem report** that is submitted to the authority who requisitioned the examination (magistrate/police as per CrPC Section 174). - While findings may eventually reach the police through the official report, there is **no obligation to informally update or keep police informed** during the examination process. - The doctor's role is that of an **independent expert witness** to the court, not an investigative assistant to the police. - Maintaining independence and objectivity requires the doctor to document findings formally rather than providing ongoing informal updates to investigating officers. *Routinely record all positive findings and important negative ones* - This IS a **fundamental obligation** for any doctor performing a postmortem examination. - Both positive findings (pathological changes, injuries) and significant negative findings (absence of expected pathology) must be documented to provide a comprehensive and accurate record. - This meticulous documentation ensures the **integrity, reliability, and legal validity** of the postmortem examination and its conclusions. *The examination should be meticulous and complete* - This IS a **professional, ethical, and legal obligation** for any doctor undertaking a postmortem examination. - A systematic and thorough examination of all body systems is essential to accurately determine the cause of death and identify all relevant findings. - Incomplete examinations can lead to **missed diagnoses and miscarriage of justice** in medico-legal cases. *He must preserve viscera and send for toxicology examination in case of poisoning* - This IS a **crucial obligation** when poisoning is suspected or cannot be ruled out based on the postmortem findings. - Relevant viscera (liver, kidney, stomach contents) and bodily fluids (blood, urine) must be preserved in appropriate containers for subsequent toxicological analysis. - This step is **essential to confirm or exclude toxicological involvement** in the death and is a standard protocol in medico-legal postmortem examinations as per established guidelines.
Question 3: 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.
Question 4: An unconscious child is brought to the casualty. What is the correct sequence of the management?
- A. Circulation, Airway, Breathing
- B. Breathing, Circulation, Airway
- C. Circulation, Breathing, Airway
- D. Airway, Breathing, Circulation (Correct Answer)
Explanation: ***Airway, Breathing, Circulation*** - The **ABC sequence** is the cornerstone of pediatric resuscitation as per **PALS (Pediatric Advanced Life Support) guidelines** - In an unconscious child, a patent **airway** is the absolute first priority - without this, no oxygen can reach the lungs regardless of breathing effort - Once airway patency is ensured, **breathing** must be assessed and supported to provide adequate ventilation and oxygenation - Only after securing airway and breathing should **circulation** be addressed, as effective circulation without oxygenation is futile - This sequence prevents **hypoxic brain injury**, which can occur within 4-6 minutes of oxygen deprivation *Circulation, Airway, Breathing* - This violates the fundamental **ABC principle** of emergency management - Prioritizing **circulation** before establishing a patent **airway** means attempting to circulate deoxygenated blood - Without airway patency, any circulatory support will fail to deliver oxygen to vital organs, leading to **irreversible hypoxic damage** - In pediatric emergencies, respiratory failure is more common than primary cardiac arrest, making airway management even more critical *Breathing, Circulation, Airway* - Attempting to support **breathing** before securing the **airway** is physiologically ineffective - An obstructed airway prevents air entry despite breathing efforts or bag-mask ventilation attempts - This sequence can lead to **gastric distension, aspiration**, and worsening hypoxia - Delays in airway management increase the risk of **cardiac arrest** from prolonged hypoxemia *Circulation, Breathing, Airway* - This sequence dangerously delays **airway management**, the most time-critical intervention - In an unconscious child, airway obstruction from tongue falling back or secretions is common and immediately life-threatening - Without a patent airway, neither breathing support nor circulatory measures can prevent **brain death** from anoxia - Following this sequence contradicts all **international resuscitation guidelines** (PALS, AHA, ERC)
Question 5: On postmortem examination, contusion of neck muscles is seen along with fracture of hyoid bone. The most probable cause of death is:
- A. Hanging
- B. Burking
- C. Throttling (Correct Answer)
- D. Smothering
Explanation: ***Throttling*** - **Manual strangulation** (throttling) causes direct compression of the neck with fingers and thumbs, leading to **bilateral contusion of neck muscles** and **fracture of the hyoid bone** due to sustained gripping force. - The combination of **deep muscle contusions** (especially in strap muscles, sternomastoid) with hyoid fracture is **highly characteristic** of manual strangulation, as the direct manual force applied causes crushing injury to both soft tissues and cartilaginous/bony structures. - Additional findings often include **fingernail marks/abrasions** on the neck, bruising corresponding to finger positions, and fractures of thyroid cartilage. - This pattern is **strongly suggestive of homicide** given the force and duration required. *Hanging* - In hanging, the force is applied through a **ligature** that creates a characteristic **oblique ligature mark** (typically rising toward the point of suspension). - While hyoid bone fractures **can occur** in hanging (especially in elderly individuals with ossified hyoid or in judicial hanging), they are **less common** (15-30% of cases) compared to manual strangulation (30-50% of cases). - **Deep bilateral neck muscle contusions are atypical** in hanging; when present, muscle injuries are usually **unilateral** and correspond to the side of the knot or are superficial. - The ligature mark and pattern of neck injuries distinguish hanging from manual strangulation. *Burking* - **Burking** involves compression of the chest and abdomen to prevent respiratory movements, combined with covering the mouth and nose. - This method causes **asphyxia** by impairing chest wall expansion and occluding airways, **without direct neck compression**. - Neck injuries like deep muscle contusions and hyoid fracture are **not characteristic** of burking; findings are primarily thoracic petechiae and signs of chest/abdominal compression. *Smothering* - **Smothering** involves blocking the nose and mouth (with hand, pillow, or other soft material) to prevent air entry. - This causes **suffocation without neck trauma**; typical findings include petechiae around eyes and face, oral/nasal bleeding. - **Absence of neck injuries** (no muscle contusions, no hyoid fracture) distinguishes smothering from strangulation methods.
Question 6: Which of the following statements about Platauf's hemorrhages is correct?
- A. Subpleural hemorrhage (Correct Answer)
- B. All are true
- C. Mostly seen in middle lobe
- D. Sign of drowning
Explanation: ***Subpleural hemorrhage*** - **Platauf's hemorrhages** are **defined as subpleural hemorrhages** found on the surface of the lungs, particularly in cases of **asphyxial death** related to drowning. - This is the **most accurate and specific statement** as it describes the **pathological nature** of Platauf's hemorrhages. - These hemorrhages result from the rupture of small capillaries due to sudden increase in intrathoracic pressure and aspiration of water during drowning. - They appear as **small petechial hemorrhages** on the **anterior, lateral, and inferior surfaces** of the lungs. *Mostly seen in middle lobe* - This is **incorrect**. Platauf's hemorrhages can occur in **any lobe** of the lungs, not specifically the middle lobe. - They are more commonly described as being present on the **anterior and lateral margins** and **inferior surfaces** of the lungs, regardless of lobe. *All are true* - This statement is **incorrect** because the statement about the middle lobe is false, making "All are true" false. *Sign of drowning* - While this statement has merit, it is **less specific** than "subpleural hemorrhage." - Platauf's hemorrhages are indeed **strongly associated with drowning** and are considered one of the **internal findings in drowning deaths**. - However, they are **not absolutely pathognomonic** - they can occasionally be seen in other forms of acute asphyxia or conditions involving severe acute pulmonary congestion. - The **defining characteristic** is that they are **subpleural hemorrhages**, which is a more precise pathological description than calling them simply a "sign of drowning." - Therefore, when asked "which statement is correct," the **most accurate and specific answer** is "Subpleural hemorrhage."
Question 7: The friend and victim had alcohol and got into an argument over a common girlfriend, following which the friend kills the victim by sitting on his chest and covering his nose and mouth. This is an example of?
- A. Gagging
- B. Smothering (Correct Answer)
- C. Choking
- D. Throttling
Explanation: ***Smothering*** - This scenario describes **manual obstruction** of the mouth and nose, preventing air entry without external neck compression. - The act of sitting on the chest further restricts respiratory movements, contributing to **asphyxia**. *Gagging* - Gagging refers to the obstruction of the **oral cavity** due to material placed inside the mouth, typically to prevent speaking or crying out. - While it can contribute to asphyxia, the primary mechanism described here involves external covering of both nose and mouth. *Choking* - Choking involves the **internal obstruction** of the airway, usually by a foreign body lodged in the pharynx or larynx. - This scenario explicitly details external occlusion of the respiratory orifices, not internal blockage. *Throttling* - Throttling is a form of **manual strangulation** that involves direct compression of the neck by hands or forearm. - The description of covering the nose and mouth rather than compressing the neck rules out throttling.
Question 8: In which of the following rigor mortis is not seen?
- A. Well built male
- B. Fetus <7 months (Correct Answer)
- C. Well built female
- D. Old patient > 80 years
Explanation: ***Fetus <7 months*** - Rigor mortis is a post-mortem stiffening of muscles caused by the depletion of **ATP** and accumulation of **lactic acid**. - A fetus less than 7 months old has an **immature muscular system** with insufficient muscle mass and development to exhibit a noticeable rigor mortis. *Well built male* - A well-built male has significant **muscle mass**, which facilitates the formation of noticeable rigor mortis due to the large amount of contractile proteins and metabolic activity. - The onset and intensity of rigor mortis are directly related to the amount of **muscle tissue** present. *Well built female* - Similar to a well-built male, a well-built female possesses sufficient **muscle mass** for rigor mortis to be clearly observed. - Muscle development and **physiological processes** in healthy adults allow for the typical progression of rigor mortis. *Old patient > 80 years* - While muscle mass may be reduced in elderly individuals due to **sarcopenia**, rigor mortis still occurs, although it might be less intense or of shorter duration. - The underlying **biochemical mechanisms** for rigor mortis (ATP depletion, actin-myosin cross-bridge formation) are still present in older individuals.
Question 9: A 45-year-old man is found deceased in his bedroom. Time of death needs to be established for legal purposes. The body temperature is 32°C (89.6°F), and the ambient temperature is 20°C (68°F). Rigor mortis is complete in all muscle groups. Assuming normal conditions, which of the following best estimates the postmortem interval?
- A. 24-26 hours
- B. 6-8 hours
- C. 12-14 hours (Correct Answer)
- D. 2-4 hours
Explanation: ***12-14 hours*** - **Complete rigor mortis** in all muscle groups typically occurs between **12-18 hours** postmortem. - The body temperature of 32°C (89.6°F) with an ambient temperature of 20°C (68°F) indicates significant cooling, suggesting a **postmortem interval of several hours**, consistent with the stages of rigor mortis. - This timeframe represents the peak of complete rigor mortis across all muscle groups. *24-26 hours* - By **24-36 hours**, rigor mortis would typically be **passing or completely absent** due to autolysis and decomposition. - The body temperature would also be closer to the ambient temperature at this stage, unless other factors were involved. *6-8 hours* - At 6-8 hours, rigor mortis would typically be **developing or fully established in smaller muscles** (like the face and neck), but likely **not complete in all muscle groups**. - Body temperature would be higher than 32°C, as a significant drop to 32°C would take longer. *2-4 hours* - At this early stage, rigor mortis would likely be **absent** or only just beginning to develop in the smallest muscles. - The body temperature would also be much closer to normal body temperature (37°C or 98.6°F), with only a slight drop.
Question 10: A female was found dead in her bedroom. The room was not locked from inside. Her blood alcohol value was found to be 350 mg/dL. The picture taken at the post mortem is shown below. The diagnosis is? (AIIMS Nov 2018, AIIMS Nov 2017)
- A. Traumatic asphyxia
- B. Throttling (Correct Answer)
- C. Café coronary
- D. Bansdola
Explanation: ***Throttling*** - The autopsy image shows extensive **internal hemorrhage** and disruption of neck structures, consistent with significant compressive force applied to the neck by hands, as seen in **throttling**. - **Throttling** (manual strangulation) causes deep internal injuries including fractured **hyoid bone**, damaged **thyroid cartilage**, and **strap muscle hemorrhage**, even when external marks may be minimal or absent. - The high blood alcohol level (350 mg/dL - severe intoxication) would have impaired her ability to resist, and the unlocked room suggests **homicidal** intent rather than suicide. - Key autopsy findings: **deep neck muscle hemorrhage**, **laryngeal fractures**, and **torn blood vessels** without a ligature pattern. *Traumatic asphyxia* - Traumatic asphyxia results from severe **chest/thoracic compression** leading to acute venous congestion in the head and neck region. - Classical signs include **petechial hemorrhages** on face and conjunctivae, **cyanosis** above compression level, and relatively **intact neck structures** on autopsy. - The severe internal neck damage shown in the autopsy image is **not characteristic** of traumatic asphyxia, which primarily affects superficial vessels due to back-pressure, not deep structural injury. *Café coronary* - **Café coronary** is sudden death from **food bolus aspiration** causing airway obstruction, commonly occurring in intoxicated individuals who cannot protect their airway. - Autopsy findings would show an **obstructing food bolus in the larynx/trachea** without the extensive neck trauma and hemorrhage depicted in the image. - No manual strangulation injuries would be present. *Bansdola* - **Bansdola** is a traditional method of strangulation using a **bamboo stick or rod** twisted across the neck with a rope, used historically as torture or execution. - It causes a characteristic **linear ligature mark** with underlying soft tissue injury in a horizontal pattern across the neck. - The autopsy findings in the image show **diffuse manual strangulation injury** rather than the specific linear pattern of ligature strangulation seen in Bansdola.
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