Wave intensity analysis in the great arteries – What has been learnt during the last 25 years? Part 1

Abstract

Wave intensity analysis in the great arteries – What has been learnt during the last 25 years? Part 1

Stiffening and ventricular–arterial interaction in the ascending aorta using MRI

“…The wave intensity analysis (WIA) technique is most suitable for studying ventricular–arterial coupling [16] as it has been validated on the bench [17], used in vitro with the airways [18], in vivo [19] and clinical investigations [20,21], including ventricular assist devices [22]. Extensive reviews of the various applications of WIA have been provided elsewhere [23,24], but briefly WIA was initially introduced as a time-domain technique for analysing wave propagation, and the ventricular–arterial interaction [25]. Previous studies have shown that the forward compression wave (FCW) in early systole relates to left ventricular (LV) myocardial contractility, the backward compression wave (BCW) in mid-systole relates to peripheral reflections and forward decompression wave (FDW) in end-systole correlates with LV early diastolic performance [26].…”

Impact of tapering of arterial vessels on blood pressure, pulse wave velocity, and wave intensity analysis using one‐dimensional computational model

“…The non‐linear separation of waves has previously been presented in several studies 59. However, Equation (7) is mostly used for practical applications through WIA.…”

“…In normal physiological condition, during early systole, a forward compression wave (FCW) increases both pressure and blood velocity 51. During mid‐systole, the arrival of a backward compression wave (BCW) causes an increase in pressure but a decrease in velocity.…”