A New Parameter of Pulsed‐Wave Tissue Doppler Imaging: IVRa

Abstract

IVRa velocity exhibits a positive correlation with LV geometry changes indicating that IVRa velocity is affected by LV geometry like the other parameters influenced by LV geometry.

Response to Letter Regarding, “A New Parameter of Pulsed‐Wave Tissue Doppler Imaging: IVRa”

“…We appreciate the comments of Baysan et al concerning our original manuscript that titled, “A new parameter of pulsed‐wave tissue Doppler imaging: IVRa.” 1 In responding to their question, “A positive myocardial velocity during isovolumic phase: an active contraction or a passive movement?,” IVRa velocity coincides with aortic valve closure time, and IVRb velocity coincides with tricuspid valve opening time. So, this velocity (IVRa) is not an active contraction velocity of the ventricles.…”

“…Additionally, in the article that was published in 2003, 4 we found that IVRa velocity is sensitive to detect right ventricular diastolic dysfunction. When these findings 1–4 were taken together, they suggest that IVRa velocity assesses passive movement and is a new pulsed wave tissue Doppler imaging parameter to evaluate both LV and right ventricle diastolic dysfunction.…”