Objective To make certain about the phase of time from the culminated point of instantaneous accelerating wave intensity (W1) to that of instantaneous decelerating wave intensity (W2) wave intensity(WI) technique. Methods The ejection time of the curve of Doppler rate of flow in aortic opens and W1～W2 of common carotid arteries of both sides were detected in 66 healthy adults by Prosound α10 color Doppler ultrasound and the data were contrasted and analyzed. Results There were no statistical significances in the standardized value difference of ejection time of aorta and of time from starting point of W1 to culminated point of W2 in common carotid arteries of both sides (P>0.05). And there were all statistical significances in the standardized value difference of ejection time of aorta and of time in other groups (P<0. 001). Conclusions The ejection time is the time from starting point of W1 to culminated point of W2. The beginning of cardiac ejection should be the starting point of W1 curve,and the culminated point of W2 is the terminal time of ejection.

Objective:To explore the level and influencing factors of kinesiophobia in patients with coronary heart disease using meta-analysis, so as to provide references for formulating intervention strategies to reduce the level of kinesiophobia.Methods:The literatures on the level of kinesiophobia and its influencing factors in patients with coronary heart disease were searched from CNKI, VIP, Wanfang, PubMed and other databases from estabishment of the databases to May 19, 2023. The included studies were analyzed by Stata 15.1.Results:A total of 20 articles were included. The Meta-analysis results showed that patients with coronary heart disease had a high level of kinesiophobia, with a total score of 42.76 [95% CI (40.72, 44.80) ] . Gender [ MD=-2.39, 95% CI (-3.35, -1.44) , P<0.001] , method of payment for hospital care [ MD=2.38, 95% CI (1.09, 3.67) , P<0.001] , cardiac function [ MD=-9.72, 95% CI (-14.45, -4.99) , P<0.001] , with or without experience of cardiac surgery [ MD=3.42, 95% CI (1.58~5.26) , P<0.001] , number of stent [ MD=-4.82, 95% CI (-9.09, -0.55) , P=0.027] , drinking status [ MD=-3.54, 95% CI (-5.03, -2.04) , P<0.001] , self-perceived burden [ Summary r=0.36, 95% CI (0.31, 0.41) , P<0.001] and self-efficacy [ Summary r=-0.60, 95% CI (-0.75, -0.38) , P<0.001] were the factors influencing the level of kinesiophobia. Conclusions:The level of kinesiophobia in patients with coronary heart disease is high. Medical staff need to provide targeted interventions based on the characteristics of the population to reduce the kinesiophobia level of patients.