Abstract
The study sought to provide an insight into the prevalence, characterization and possible reliable indicators of early sudden cardiac death/malignant ventricular arrhythmias (SCD/MVAs) in a large cohort of dilated cardiomyopathy (DCM). DCM generally affects young individuals and is characterized by an unpredictable prognosis with a non-negligible risk of SCD/MVAs, particularly in early stages of disease. From 1988 to 2014, 952 patients with DCM were consecutively included in the Heart Muscle Disease Registry of Trieste. Globally, 20 patients (2.1% of the overall population) experienced SCD/MVAs within the first 6 months after enrollment (primary endpoint). At baseline they showed a worse functional class (New York Heart Association functional class III to IV 42% vs. 22%, p = 0.038), a longer QRS complex duration (127 ± 41 ms vs. 108 ± 33 ms; p = 0.013) and a larger indexed left ventricular end-systolic volume (LVESVI) (82 ± 49 ml/m2 vs. 67 ± 34 ml/m2; p = 0.049), as compared to patients without early SCD/MVAs. Beta-blockers were less tolerated (59% vs. 83% in patients with no early SCD/MVAs; p = 0.008), mostly due to hemodynamic intolerance. At multivariate analysis, LVESVI (odds ratio [OR]: 1.012; 95% confidence interval [CI]:...Continue Reading
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