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Pre-AIDS deaths in HIV infection related to intravenous drug use
R P Brettle1, A Chiswick, J Bell
1Regional Infectious Disease Unit, City Hospital, Edinburgh, UK.
Insights
Drug overdoses were the most frequent cause of death before an AIDS diagnosis in HIV patients primarily infected through injection drug use. Many sudden deaths were linked to underlying health issues, increasing overdose susceptibility.
Area of Science:
- Infectious Diseases
- Public Health
- Pathology
Background:
- HIV/AIDS epidemic impact on mortality patterns.
- Challenges in classifying deaths in HIV cohorts.
- High prevalence of injection drug use (IDU) in HIV transmission.
Purpose of the Study:
- To analyze causes of death in HIV patients who died before an AIDS diagnosis.
- To investigate the role of underlying conditions in pre-AIDS mortality.
- To propose a refined classification for non-AIDS deaths in HIV cohorts.
Main Methods:
- Prospective data collection on deaths in the Edinburgh City Hospital HIV cohort (1986-1994).
- Analysis of autopsy data for patients who died without an AIDS diagnosis.
- Categorization of pre-AIDS deaths into expected and sudden/unexpected causes.
Main Results:
- 64 HIV patients died without an AIDS diagnosis (2.5/100 person-years).
- Drug overdoses (45%), bacterial sepsis (25%), and liver disease (26%) were leading causes of pre-AIDS death.
- A significant proportion of sudden deaths had underlying pathology, potentially increasing overdose risk.
Conclusions:
- Drug overdose is a primary cause of pre-AIDS mortality in IDU-infected HIV patients.
- Underlying conditions may predispose individuals to sudden death, including overdose.
- Recommendations for classifying non-AIDS deaths as Medical or Expected Non-AIDS (MNA/ENA) and Sudden Non-AIDS (SNA).
Abstract:
We prospectively collected data on deaths in the Edinburgh City Hospital HIV cohort of patients (60-70% acquired via injection drug use) from October 1986 to September 1994. Sixty-four patients (25% of all HIV deaths or 2.5/100 person-years) had died without an AIDS diagnosis, and 42 (66%) of these had autopsy data available. Some pre-AIDS deaths (20% or 0.5/100 person-years) were the expected consequence of underlying medical conditions diagnosed during life: the remainder (80% or 1.98/100 person-years) were sudden or unexpected. Examining the underlying conditions, drug overdoses accounted for 45% or 1.1/100 person-years; bacterial sepsis, 25% or 0.6/100 person-years; liver disease, 26% or 0.6/100 person-years; and an undiagnosed AIDS condition, 9% or 0.2/100 person-years. Drug overdoses were the commonest cause of pre-AIDS death in this cohort of patients predominantly infected via IDU, but many of the sudden deaths had significant underlying pathology, which may have increased their susceptibility to an overdose of drugs. In future, death before an AIDS diagnosis should be classified into Medical or Expected Non-AIDS (MNA or ENA) and Sudden Non-AIDS (SNA).