Abstract
Aim To determine the applicability of speckle-tracking EchoCG (STE) and the Valsalva maneuver for diagnosis of heart failure with preserved left ventricular ejection fraction (CHFpEF).Material and methods Transthoracic STE with simultaneous electrocardiogram (ECG) recording was performed for patients with CHFpEF and healthy sex- and age-matched subjects (control group) at rest and during the Valsalva maneuver. The study was conducted in compliance with standards of Good Clinical Practice and principles of the Helsinki Declaration. The study protocol was approved by the Ethical Committee of the St. Petersburg State University.Results During the Valsalva maneuver, deviations of both global and segmental myocardial strain were more pronounced than at rest. In patients of the study group performing the Valsalva maneuver, LV end-diastolic volume and LV end-systolic volume (99 %) were increased. Heart rate was considerably reduced (significance of difference >99%) in patients with CHFpEF during the Valsalva maneuver compared to the control group. The increased predictive value of these parameters during the Valsalva maneuver can justify the inclusion of this method in early detection and prognostic assessment of CHFpEF.Conclusion Speckle-tracking EchoCG with the Valsalva maneuver is a noninvasive, generally available, and easily reproducible outpatient method for diagnosis of CHFpEF.
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