“…Left ventricular ejection time was found to be correlated with the left ventricular ejection time (LVET) measured from Doppler aortic flow (Chan et al, 2007a), which confirms that LVET p can reflect changes in LVET (Quarry-Pigott et al, 1973;Geeraerts et al, 2004). The time interval between ventricular electrical activity and the arrival of a peripheral pulse wave is commonly referred to as PTT (Obrist et al, 1979;Newlin, 1981;Contrada et al, 1995;Foo & Lim, 2006). PTT is a sum of the ventricular pre-ejection period (PEP), which corresponds to the timing from the onset of ventricular depolarization to the onset of ventricular ejection, and the vascular transit time (VTT), which defines the period for the arterial pulse wave to travel from the aortic valve to the peripheral arteries.…”