It is essential that health professionals who practice medicine in prison rely on accurate knowledge about their patients to provide them with adapted care. The use of cannabis can influence the health status of prisoners, but data are lacking regarding the potentially related adverse health consequences. The objective of this descriptive study was to describe the cardiovascular outcomes related to cannabis use in prisoners from several detention centres hospitalised in a French hospital.

In France, prisoners who require a longer than 48-hour hospitalisation are admitted in specific secured polyvalent units called inter-regional secured hospital units (ISHU). Hospitalisations in the ISHU of Toulouse University Hospital between 2012 and 2016 for cardiovascular disorders potentially related to the use of cannabis were extracted from the French hospital database and analysed using a previously validated methodology. Included patients were those hospitalised for an inaugural cardiovascular event or deterioration of a preexisting cardiovascular illness who declared having used cannabis while imprisoned.

Overall, 31 cardiovascular outcomes were identified in cannabis-using hospitalised prisoners among 411 hospitalisations for cardiovascular disorders (all men, mean age 43±SD years old). All used cannabis (daily: 56%) and tobacco (more than 15 PY: 83.3%), 5 used cocaine, and none used alcohol. The most frequent were coronaropathy (n=13), followed by obliterating arteriopathy of the lower limb (OALL, n=7), arrhythmic cardiomyopathy (n=4), venous thrombosis (n=3), infectious cardiopathy (n=2), and ischemic stroke (n=2).

This description of serious cardiovascular outcomes in prisoners who use cannabis provides insights into the clinical features possibly observed in this vulnerable population The findings indicate that 7.5% of hospitalizations of prisoners for cardiovascular disorders are potentially linked to cannabis used in prison.