Table 1. Arterial functional parameters used to describe pulsatile hemodynamics and arterial stiffness.
Measure | Advantage | Disadvantage | Measurement technique | Prognostic value for heart failure |
---|---|---|---|---|
Brachial PP | Simple | Depends on cardiac and arterial function | Brachial cuff | +++ (direct or inverse) |
Central PP | The PP “seen” by the heart and central organs | Depends on cardiac and arterial function | Radial/brachial waveforms (tonometry or cuff), calibrated with brachial BP, and TF → central pressure waveform | + |
PWA: AIx, AP | Physiological rationale | Depends on cardiac and arterial function, heart rate, sex, height, etc. | Automated analysis of the central pressure waveform | + |
WSA: Pb, RM | Physiological rationale | Needs pressure and flow waveforms | Automated analysis of the central pressure and flow waveform | ++ |
WIA | Physiological rationale | Needs pressure and flow waveforms; sensitive to waveform quality | Automated analysis of the central pressure and flow waveform | − |
cfPWV | Relatively robust measurement | Depends on actual BP; determination of travel distance on body surface only an estimate | Tonometry, piezo-electronic sensors, cuffs | ++ |
baPWV | Relatively robust measurement | Depends on actual BP; determination of travel distance is “virtual” | Cuffs | + |
AIx = augmentation Index; AP = augmented pressure; baPWV = brachial-ankle pulse wave velocity; BP = blood pressure; cfPWV = carotid-femoral pulse wave velocity; Pb = amplitude backward wave; PP = pulse pressure; PWA = pulse waveform analysis; RM = reflection magnitude; TF = transfer function; WIA = wave intensity analysis; WSA = wave separation analysis.