Figure 8
From: Respiratory maneuvers in echocardiography: a review of clinical applications
67 year-old female, with severe hypertrophic cardiomyopathy (resting LV outflow tract gradient of 170 mm Hg at admission). A. After beta-blocker treatment, resting CW trace revealed a LV outflow tract peak velocity of 2.1 m/s, with a corresponding gradient of 18 mmHg; B. During Valsalva maneuver, peak velocity and gradient increased to 5 m/s, and 101 mm Hg, respectively.