Phase analysis of R-W1 in wave intensity technique
10.3760/cma.j.issn.1004-4477.2009.01.011
- VernacularTitle:瞬时波强技术中R-W1时相分析
- Author:
Husheng XIAO
;
Haoqiang YIN
;
Zhizhang XU
;
Aihong ZHANG
;
Fang XU
;
Xin PENG
;
Wei JIN
;
Ying LU
;
Dongwen GAO
;
Qi WANG
- Publication Type:Journal Article
- Keywords:
Ultrasonography;
Instantaneous wave intensity
- From:
Chinese Journal of Ultrasonography
2009;18(1):34-36
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the generalization and application of R-W1 through the phase analysis of Wave intensity technique.Methods The phases of R-W1 of 66 healthy adults were detected by Aloka Prosound α10 color Doppler uhrasound.Results There were all statistical significances in the time difference of R-W1 in left and right common carotid arteries and right brachial artery(P＜0.01),in the pressure wave conductive time in left and right common carotid arteries(P＜0.05),in right brachial artery and both sides of common carotid arteries(P＜0.01).There were no statistical significances in the time from the starting point to the culminate point of W1 in left and right common carotid arteries.There were statistical significances in the time from the starting point to the culminate point of W1 in right brachial artery and both sides of common carotid arteries(P＜0.05).Conclusions"R-W1 almost equals to pre-ejection period"as reported by literatures actually involves three phases which respectively are isovolumetric contraction time of left ventricle,pressure wave conductive time and time from the starting point to the culminate point of W1.The factor of pressure wave conductive time should be considered when evaluating diseases in clinic.The pre-ejection time should be the time from the culminate point of R wave in ECG to the starting point of W1 and the time from the starting point to the culminate point of W1 should not be involved in.
