Peripheral and Central Pulse Waveforms.

(A) This figure depicts a peripheral waveform obtained via radial artery tonometry. In this sample from a lone AF patient, peripheral blood pressure is 129/81 with a pulse pressure of 48 mmHg. (B) Aortic waveform can then be derived from peripheral waveform shown in (A) with the SphygmoCor software’s generalized transfer function. The central blood pressure is 122/82 with a pulse pressure of 40 mmHg. Augmentation pressure is a measure of reflected pressure wave, which is the difference between aortic systolic pressure and the first peak of the waveform. Augmentation index in this example is 12/40 X 100 = 30%.