Figure 40e

Continuous wave Doppler tracing across aortic outflow tract shows typical dagger-shaped late-peaking signal in patient with hypertrophic obstructive cardiomyopathy (HOCM). Increase in gradient occurred during Valsalva's maneuver (last three panels).

DeLuca, M., MD, Tak, T., MD, PhD, Hypertrophic Cardiomyopathy, Postgraduate Medicine, June 2000, p 127-140.