Common Findings and Predictive Measures of Opioid Overdoses

Area of Science:

• Forensic Pathology
• Toxicology
• Medical Autopsy

Background:

• Opioid overdose deaths present diagnostic challenges.
• Identifying specific autopsy findings can aid in determining cause of death.
• Cerebral edema, pulmonary edema, and bladder distension are potential indicators in intoxication cases.

Purpose of the Study:

• To investigate autopsy findings of cerebral edema, pulmonary edema, and urinary bladder distension in fatal opiate/opioid intoxications.
• To determine the predictability of these findings in New Hampshire cases.
• To compare findings between fentanyl, other opioids, and a control group.

Main Methods:

• Review of 150 autopsy reports for decedents aged 20-40 in New Hampshire.
• Categorization into three groups: fentanyl intoxication (50), other opioid intoxication (50), and non-intoxication controls (50).
• Systematic examination of autopsy reports for cerebral edema, pulmonary edema, and urinary bladder distension.

Main Results:

• Pulmonary edema was highly prevalent in both fentanyl (96%) and other opioid (94%) intoxication groups.
• Cerebral edema occurred in 54% of non-fentanyl opioid deaths versus 8% in fentanyl deaths.
• Urinary bladder distension was observed in 34% of non-fentanyl opioid deaths compared to 16% in fentanyl deaths.
• The triad of findings occurred in 8% of intoxication cases, but none in the control group.

Conclusions:

• A correlation exists between opioid intoxication and the presence of pulmonary edema, cerebral edema, and bladder distension.
• Cerebral edema and bladder distension are suggestive of opioid intoxication but less common in fentanyl-related fatalities.
• The rapid toxicity of fentanyl may explain the lower incidence of these specific findings.
• Postmortem computed tomography should not replace traditional autopsy for evaluating fatal intoxications.