Abstract 10757: Patient-Reported Quality of Life Outcomes in Hypertrophic Cardiomyopathy Patients

Background: Few studies have systematically assessed quality of life (QOL) in hypertrophic cardiomyopathy (HCM) patients not meeting the septal reduction therapy (SRT) threshold, but require avoiding isometric exertion and weightlifting. We prospectively studied a newly developed QOL instrument to examine the associations between patient characteristics and self-reported QOL scores in HCM patients not anticipated to undergo SRT for at least 6 months. Methods: A single-center, prospective sample of 51 adult HCM patients (54±14 years, mean interventricular septum thickness = 1.7±0.4cm, 65% with left ventricular outflow tract (LVOT) obstruction, mean provokable LVOT gradient 65±42 mmHg, 59% men) completed a baseline 70-item QOL instrument, adapted from validated QOL questionnaires. All patients signed informed consent. Results: Mean self-reported QOL scores (on a 5-point Likert scale with higher scores indicating higher QOL) were as follows: physical function (3.5±1), depression (3.7±1), anxiety (3.6±1), post-traumatic stress disorder (PTSD) (3.7±1), social function (4.1±1), spiritual acceptance of diagnosis (3.8±1), self-efficacy (4±1), and resilience (4±1). Men vs. women reported higher physical function (3.9±1 vs. 2.9±1), less depression (4±1 vs. 3.3±1), less anxiety (3.8±1 vs. 3.3±1), and higher social function (4.3±0.7 vs. 3.8±1) (all p<0.05). Patients with obstructive HCM reported lower physical function scores (3.3±0.8) vs. non-obstructive HCM (3.8±0.8), p=0.03. Symptomatic patients reported lower physical function (3.2±0.8 vs. 4.3±0.5), social function (3.8±0.8 vs. 4.5±0.6) and worse depression (3.5±0.7 vs. 4.3±0.6), anxiety (3.4±0.8 vs. 4.1±0.7) and PTSD (3.5±0.8 vs. 4.3±0.9) scores (all p<0.01). Presence of an implantable cardioverter defibrillator (ICD) was associated with lower vs. higher physical (2.9±0.4 vs. 3.5±1) and social function (3.6±1 vs. 4.1±1) (all p<0.05). Conclusion: In HCM patients not requiring SRT, higher physical function scores were significantly associated with a better self-perceived overall health. Being a woman, having LVOT obstruction, presence of a defibrillator and presence of symptoms was significantly associated with worse perceived physical and social function.