Occurrence and Natural History of Clinically Silent Episodes of Atrial Fibrillation in Hypertrophic Cardiomyopathy

Clinical and echocardiographic parameters as risk factors for atrial fibrillation in patients with hypertrophic cardiomyopathy

“…The prevalence of symptomatic or clinically silent episodes of AF in HCM patients reported in previous studies ranged from 18% to 28% . When compared to the general population, HCM patients have a 4‐fold to 6‐fold greater likelihood of developing AF .…”

“…Both syncope and nsVT are related to AF, as documented by our data. Some of these episodes are clinically silent . Hence, whenever possible, equipment with the option of LA function monitoring should be selected.…”

Thromboembolism in Patients with Hypertrophic Cardiomyopathy

“…An asymptomatic paroxysmal episode or a first paroxysmal episode of AF in patients without previously documented AF may lead to thromboembolism [85][86][87][88]. Clinically asymptomatic AF appears to be common in HCM, occurring in almost 25% of patients [89,90]. The American guidelines recommend that monitoring via 24-hour ambulatory electrocardiogram for asymptomatic AF should be considered in subjects with HCM [71].…”

Cardiomyopathy Etiologies, Symptoms and Management

“…Arrhythmias are also a major complication of HCM as they can lead to sudden cardiac death (SCD) [12]. Both supraventricular and ventricular arrhythmias are found which can lead to palpitations, dyspnea, presyncope, syncope, and SCD.…”

“…Both supraventricular and ventricular arrhythmias are found which can lead to palpitations, dyspnea, presyncope, syncope, and SCD. Of the supraventricular arrhythmias, atrial fibrillation (AF) is the most common [12].…”