Dying in the year after surviving: a perspective on elevated all-cause mortality among opioid overdose survivors

Abstract

It has been reported that opioid overdose survivors who had a prior non-fatal opioid overdose have a substantially elevated one-year all-cause mortality compared to first-time overdose survivors. The objective of this Perspective was to construct a framework for assessing the observed elevated post-overdose one-year mortality burden. We reviewed published peer-reviewed literature in the English language identified through PubMed-MEDLINE, with supplemental searches of JAMA Network, the New England Journal of Medicine (NEJM), and federal surveillance data (e.g. CDC and SAMHSA). References were selected for relevance, prioritizing 2020–2026, and were used as direction to additional sources of material. It was found that elevated one-year mortality among prior overdose survivors reflects at least six interacting mechanistic realms: (1) cumulative hypoxic-ischemic organ injury, including hippocampal atrophy and leukoencephalopathy; (2) cardiopulmonary toxicity and opioid withdrawal-induced cardiomyopathy; (3) opioid-induced immunosuppression with heightened vulnerability to infective endocarditis and sepsis; (4) neuropsychological sequelae including executive dysfunction, amnestic syndrome, and suicidality; (5) opioid tolerance compounded by fentanyl-specific pharmacotoxicology; and (6) sociostructural determinants such as housing instability, racial disparities, and treatment gap with some high-risk populations, including Medicare disability beneficiaries, showing that fewer than 5% received medication for opioid use disorder (MOUD) after nonfatal overdose. Therefore, we propose that elevated postoverdose one-year mortality is not simply a marker of substance-use severity, but also a multi-organ, multi-system consequence of repeated physiological insult, neuropsychological injury, and socioeconomic circumstance.