The relationship between positional asphyxia and increasing body mass index.

Area of Science:

• Forensic Pathology
• Toxicology
• Public Health

Background:

• Positional asphyxia is a cause of death where body position obstructs breathing.
• Risk factors and demographic data for positional asphyxia require further investigation.

Purpose of the Study:

• To analyze the role of body mass index (BMI) as a risk factor in adult positional asphyxia cases.
• To identify predisposing conditions and demographic patterns in positional asphyxia fatalities.

Main Methods:

• Retrospective review of 32 adult positional asphyxia cases from Forensic Science SA (2003-2019).
• Analysis of predisposing/causative factors including accidents, intoxication, disease, and homicide.
• Assessment of body mass index (BMI) categories (underweight, normal, overweight, obese).

Main Results:

• The study identified 32 cases of positional asphyxia, with a male to female ratio of 3:1 and an average age of 49 years.
• Predisposing factors included accidents (N=8), alcohol (N=7), neurological disease (N=7), and drug intoxication (N=5).
• A significant association was found between higher BMI and positional asphyxia, with 78% of cases being overweight or obese (p < 0.05).

Conclusions:

• Increasing body mass, particularly obesity, is a critical risk factor in positional asphyxia.
• Forensic evaluations of positional asphyxia should routinely incorporate BMI assessment.
• Understanding the interplay between body habitus and positional asphyxia is crucial for accurate death investigation.