Abstract 13302: The Depression and Anxiety Paradox Following Percutaneous Coronary Intervention: A National Inpatient Sample Analysis

Abstract

Introduction: Depression and Anxiety are prevalent among patients with cardiovascular diseases. However, their impact on important clinical outcomes, such as length of hospital stay (LOS) and mortality, is incompletely understood. Objective: Examine the magnitude and impact of major depressive disorder (MDD) and anxiety on LOS and in-hospital mortality in patients with acute coronary syndrome (ACS) who undergo percutaneous coronary intervention (PCI). Hypothesis: Patients with MDD or anxiety will have poorer clinical outcomes after PCI. Methods: Data were obtained from the National Inpatient Survey (NIS). Admissions in 2017 with a primary diagnosis of ACS and undergoing PCI were identified based on ICD10 codes. Patients with MDD or anxiety were further delineated with ICD10 codes. The association between MDD or anxiety and LOS and in-hospital mortality was analyzed using linear and logistic regression models, respectively. Various sociodemographic (age, race, sex, income), clinical (history of hypertension, hyperlipidemia, stroke, peripheral artery disease, valvular heart disease, chronic kidney disease, anemia, obesity, smoking) and hospital-level (region, location, payer type) factors were adjusted for in the analysis. Results: Among 130,712 patients admitted for ACS who underwent PCI, the prevalence of MDD and anxiety were 8.7% (n=11,303) and 10.8% (n=14,066), respectively. Patients were on average aged 67 years (SD=13.5), 38% were females, and 73% non-Hispanic White. Overall, the mean LOS was 4.4 days (SD=5.4) and 4.7% of patients died while hospitalized. Patients with MDD (4.6 vs 4.4, p=0.001) or anxiety (4.7 vs 4.4, p=0.001) had longer LOS than those without these conditions. Contrary to our hypothesis, patients with MDD (OR: 0.82; 95% CI: 0.73-0.91) or anxiety (OR: 0.72; 95% CI: 0.64-0.79) had significantly lower odds of mortality than those without MDD or anxiety after adjusting for several factors of prognostic importance. Conclusions: Among ACS patients who underwent PCI, MDD and anxiety were associated with increased LOS but paradoxically lower in-hospital mortality. These findings reinforce the need for future investigations to evaluate the impact of psychological factors on clinical outcomes in ACS patients who undergo PCI.