PMC2778180_01
Pulsus alternans:beat-to-beat variation in systolic pressure is evident in aorta (a), pulmonary artery (b), and left and right ventricles (c).
CRP2009-703793.001.jpg
PMC2778180_01_CRP2009-703793.001.jpg
fig1
During the procedure, the patient had beat-to-beat alterations evident in aortic, pulmonary artery, left ventricular, and right ventricular pressures (Figure 1) in the absence of RR cycle length variation which is diagnostic of pulsus alternans.