ABMDI Wound Pattern Analysis and Injury Classification 3

Question 1

The 'rule of nines' is used in death investigation to:

Accepted Answer

Estimate the total body surface area involved in burn injuries

Answer

The rule of nines divides the adult body into regions each representing approximately 9% (or multiples thereof) of total body surface area to rapidly estimate the extent of burn coverage.

Question 2

Which feature most reliably distinguishes an antemortem injury from a postmortem injury?

Accepted Answer

The presence of vital reaction including hemorrhage, inflammation, or early healing

Answer

Vital reaction—including intradermal hemorrhage, inflammatory cell infiltration, and early tissue repair—occurs only in living tissue, confirming an injury occurred before or near the time of death.

Question 3

A 'coup-contrecoup' pattern of brain injury results from:

Accepted Answer

Blunt force impact causing brain injury both at the point of impact and the contralateral side

Answer

In coup-contrecoup injury, the brain sustains damage at the site of impact (coup) as well as on the opposite side (contrecoup) due to the brain's movement within the skull following a blunt force blow.

Question 4

In a fire-related death investigation, cherry-red coloration of the skin and muscle tissue is most commonly associated with:

Accepted Answer

Carboxyhemoglobin saturation from carbon monoxide poisoning

Answer

Carbon monoxide binds hemoglobin to form carboxyhemoglobin, which imparts a characteristic bright cherry-red or pink color to skin, muscles, and viscera, indicating the victim inhaled smoke while alive.

Question 5

The term 'perimortem' in injury timing means the injury occurred:

Accepted Answer

At or around the time of death, with ambiguous vital reaction

Answer

Perimortem refers to events occurring at or near the time of death, a period when distinguishing antemortem from postmortem injury can be difficult because vital reaction may be minimal or absent.

ABMDI - American Board of Medicolegal Death Investigators Practice Test

ABMDI - American Board of Medicolegal Death Investigators Practice Test

ABMDI Wound Pattern Analysis and Injury Classification 3