Abstract 13645: Contemporary Propensity-Matched Analysis Reveals Alarmingly High Risk Of Mortality, Arrhythmia And Cardiac Arrest In Nationwide Hospitalizations Of Patients With Heart Failure With Preserved Ejection Fraction And Cannabis Use Disorder

Abstract

Background: Preliminary reports have suggested a link between cannabis use and heart failure (HF); however, with inconclusive literature on the subject, there exists an unmet need for contemporary data on outcomes of HF patients with cannabis use. The rising prevalence of Heart Failure with Preserved Ejection Fraction (HFpEF) incited us to assess the impact of cannabis use disorder (CUD) on in-hospital outcomes of HFpEF using nationwide multicenter data. Methods: Adult admissions related to HFpEF with vs. without CUD were identified using the National Inpatient Sample (Oct 2015-Dec 2017). Demographically matched cohorts, HFpEF-CUD+ vs. HFpEF-CUD-, were obtained and compared for comorbidities and in-hospital outcomes. Multivariable regression analyses were performed after controlling for confounders (demographic/hospital characteristics, comorbidities and substance abuse) to assess the risk of adverse outcomes including all-cause mortality, arrhythmia (atrial fibrillation/flutter, ventricular arrhythmia & cardiac arrest) and stroke. Results: Of 3,835,473 HFpEF-related admissions, 10980 (0.3%) patients were cannabis users. Matched cohorts, CUD+ and CUD- were comparable for demographics (median age 55 vs. 54 years, >60% male, >80% white/black). The CUD+ cohort had a lower rate of comorbidities including hypertension (87.5% vs 88.5%), diabetes (33.7% vs 43.7%), hyperlipidemia (38.4% vs 42.1%), obesity (26.7% vs 36.2%), and renal failure (32.8% vs 39.8%) (Table 1). Despite a lower comorbidity burden, the CUD+ cohort was often admitted non-electively (95.2% vs. 92.8%) and had considerably higher odds of all-cause mortality (aOR 2.24, 95%CI:1.81-2.78), arrhythmia (aOR 1.15, 95%CI:1.05-1.25) and cardiac arrest (aOR 3.87, 95%CI: 2.88-5.21) (p<0.05) (Fig. 1). Conclusions: This nationwide multicenter analysis revealed HFpEF admissions in patients with CUD had a significantly higher risk of adverse in-hospital outcomes despite a lower CVD risk.