Background. Atrial fibrillation (AF) is the most common arrhythmia in patients with hypertrophic cardiomyopathy (HCM) and is associated with high risk of stroke, therefore early diagnosis of AF is crucial. Well-known features most closely associated with paroxysmal or permanent AF include age and left atrial enlargement.
The purpose of this study was to compare the classic echocardiographic parameters as well as speckle tracking echocardiography (STE) parameters of left atrium (LA) and left ventricle (LV) in HCM patients with and without AF.
Methods. We prospectively enrolled 60 pts with HCM and 23 healthy age- and sex-matched volunteers (control group). Classic echo, as well as 2D and 3D STE parameters were assessed and compared between the groups. Additionally, the echo parameters were compared between HCM with and without AF history.
Results. HCM group had significantly worse parameters of LA size and function. Additionally, AF (+) group had significantly lower LV ejection fraction as well as LV 2D and 3D strain parameters (Table).
Conclusions. The results of a present study confirms the worse parameters of LA size and function in the group of patients with HCM, and revealed that the presence of AF is associated with LV systolic function impairment assessed with the use of STE. This can highlight the potential role of STE techniques for systematic screening of AF in patients with HCM.