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†These authors contributed equally.
Background: Hypertrophic obstructive cardiomyopathy (HOCM) patients are
reported to have a potential risk of sudden cardiac death (SCD); however, HCM
with left ventricular outflow tract (LVOT) obstruction, which is regarded as a
risk indicator of SCD, is doubtful since the LVOT gradient is dynamic and may be
confounded by various environmental factors and routine activities. The purpose
of this study was to explore the clinical prognosis of HOCM through a multicenter
cohort study with data-driven propensity score matching (PSM) analysis.
Methods: The cohort included 2268
patients with HCM from 1996 to 2021 in 13 tertiary hospitals. In the present
study, we excluded 458 patients who underwent alcohol septal ablation (ASA) and
septal myectomy (SM) surgery so 1810 HCM patients were eventually included. We
developed a data-driven propensity score using 24 demographic and clinical
variables to create 1:1 propensity-matched cohorts. A Cox proportional hazard
regression model was constructed to assess the effect of HOCM on mortality.
Results: After logit-matching, there were no significant differences in
all-cause mortality (log-rank