Evaluation on left ventricular function by non-invasive transient deceleration wave intensity (W2) of carotid artery / 中国应用生理学杂志

<p><b>OBJECTIVE</b>To evaluate transient deceleration wave intensity (W2) of carotid artery on left ventricular diastolic function.</p><p><b>METHODS</b>40 patients with hypertension and 43 healthy volunteers were enrolled and W2 of carotid artery of the both sides were measured. The parameters of left ventricular diastolic function by traditional and tissue Doppler imaging and NT-proBNP (N-terminal probrain natriuretic peptide) were measured.</p><p><b>RESULTS</b>(1) W2 is not different between two sides of carotid artery. W2 in hypertension was lower than the control, especially in left side(1126 +/- 996 mmHg x m/s3 vs 1690 +/- 1126 mmHg x m/s3, P < 0.01). (2) The correlation of W2 and else parameters were analyzed. There were notably decreasing in left ventricular diastolic function of the hypertensive group than the control, for example, the ratio of peak velocity of early filling of mitral flow to peak early diastolic motion velocity of mitral annulus (E/Em, 9.37 +/- 3.32 vs 7.39 +/- 1.83, P < 0.01) and NT-proBNP (94.6 +/- 48.5 vs 45.2 +/- 13.8, P < 0.01). (3) The correlation analysis showed negative relation between W2 and E/Em (r = - 0.46, P < 0.05) and negative relation between W2 and NT-proBNP (r = -0.21, P < 0.05).</p><p><b>CONCLUSION</b>New carotid W2 by non-invasive technology for hemodynamics is a deserving parameter in early evaluating left ventricular diastolic function.</p>

Clinical usefulness of carotid arterial wave intensity in noninvasively assessing left ventricular performance in different hypertensive remodeling hearts / 中国应用生理学杂志

<p><b>OBJECTIVE</b>To evaluate wave intensity (WI) on left ventricular (LV) performance in the different hypertensive remolding hearts.</p><p><b>METHODS</b>105 hypertensive and 98 control subjects were underwent noninvasive evaluation of carotid arterial wave intensity, LV structure and function.</p><p><b>RESULTS</b>(1) There were increasing trends in the levels of blood pressure, LV end-diastolic diameter and LV mass index in the control, normal geometry group, concentric remodeling group, concentric and eccentric hypertrophy group. LV ejection fraction increased in the concentric hypertrophy group and decreased in the eccentric hypertrophy group in which mid-wall fractional shortening showed a decreasing trend. LV diastolic filling pressure presented increased progression accompanied by LV remodeling (P < 0.05). (2) Transient acceleration wave intensity (W1) in hypertensive subjects were higher than that in the control (P < 0.05). Transient deceleration wave intensity (W2) was lower than that in the control (P < 0.05). (3) W1 in the concentric hypertrophy group was higher and lower in the eccentric hypertrophy, compared with that in the control group, normal geometry group and concentric remodeling group (P < 0.05). W2 was lower in concentric hypertrophy group and eccentric hypertrophy group than that in the control, normal geometry group and concentric remodeling group (P < 0.05).</p><p><b>CONCLUSION</b>WI is a noninvasively obtained, clinically useful parameter for evaluation of LV performance.</p>