Fig. 1

Ultrasonographic data acquisition. Figure 1a and b: VpeakAoMax and VpeakAoMin measurement. c and d: VpeakCarMax and VpeakCarMin measurement. LVOT: left ventricular outflow tract, VpeakAoMax: maximal aortic peak velocity, VpeakAoMin: minimal aortic peak velocity, CA: carotid artery, VpeakCarMax: maximal carotid peak velocity, VpeakCarMin: minimal carotid peak velocity