Recreational drugs use as prognostic factor of major adverse cardiovascular and cerebrovascular events in patients hospitalised for acute cardiovascular events

Abstract Background Among patients admitted to the intensive cardiac care unit (ICCU), systematic screening for recreational drugs evidenced a significant prevalence of recent use and was associated with a higher rate in-hospital outcomes. However, long-term cardiovascular consequences of recreational drug use remain uncertain. Purpose We aimed to evaluate the prognostic impact of recreational drugs use at 1-year follow-up to predict major adverse cardiovascular and cerebrovascular events (MACCE) in consecutive patients admitted to ICCUs for acute cardiovascular events from the Addiction in Intensive Cardiac Care Units (ADDICT-ICCU) study. Methods In this prospective multicentric study, all consecutive patients admitted to ICCUs over two weeks in April 2021 at 39 centres across France were included. Screening for recreational drugs use was performed by systematic urinary testing. One-year follow-up consisted of a clinical visit or direct contact with the patient and the referring cardiologist. The primary composite outcome was the occurrence of one of the combined MACCE defined as cardiovascular death, nonfatal myocardial infarction (MI) or stroke. Subgroup analysis was performed in patients hospitalised at baseline for acute coronary syndrome. Results Of the 1499 consecutive patients screened, 1392 (93%) patients (63±15 years, 70% males) had a complete 1-year follow-up. Among them, 157 (11%) had an initial positive test for recreational drug use (cannabis, opioids, cocaine, amphetamines, 3,4-methylenedioxymethamphetamine [MDMA]). After 1-year of follow, 94 (7%) patients experimented MACCE. Patients with positive testing exhibited a higher rate of MACCE than non-users (13% vs 6%, respectively, p=0.002). After adjustment for traditional prognosticators, recreational drug use was independently associated with the occurrence of MACCE (HR=2.99; 95% CI: 1.73-5.16, p<0.001). In the subgroup analysis of 713 patients hospitalised at baseline for acute coronary syndrome, 96 (14%) had a positive recreational drug test and 50 (7%) experienced MACCE. Using a multivariable Cox analysis in this population, recreational drug use was still independently associated with MACCE after adjustment for traditional prognosticators (HR=2.98; 95% CI: 1.43-6.21, p=0.004). Conclusions In a large cohort of consecutive patients admitted to ICCUs for acute cardiovascular events, the prevalence of recreational drug use was 11%. Recreational drug use was strongly associated with the occurrence of 1-year MACCE even after adjustment for traditional prognosticators.Central illustrationPrognostic impact of drug use