大动脉d型转位时右心室等容收缩时间
Isovolumic contraction time of right ventricle in d-transposition of great arteries.
作者信息
Fouron J C, Vallot F, Bourlon F, Lombaert M, Ducharme G, Davignon A
出版信息
Br Heart J. 1980 Aug;44(2):204-7. doi: 10.1136/hrt.44.2.204.
The pre-ejection period of the right ventricle in d-transposition of the great arteries is known to be prolonged, compared with the same interval of the left ventricle of normal subjects. In the present study, the echocardiographic measurement of the components of the pre-ejection period of the right ventricle of 14 patients with d-transposition of the great arteries shows that the isometric contraction time of the right ventricle in d-transposition of the great arteries is similar to the same interval calculated on the left ventricle of 76 normal children of comparable age. On the other hand, the electromechanical delay was significantly greater for the right ventricle of d-transposition of the great arteries than for the left ventricle of the normal subjects. It is concluded that the prolonged pre-ejection period of the right ventricle in d-transposition of the great arteries is not the result of right ventricular dysfunction but solely of a longer electromechanical delay.
与正常受试者左心室的相同间期相比，大动脉d型转位时右心室的射血前期已知会延长。在本研究中，对14例大动脉d型转位患者右心室射血前期各组成部分的超声心动图测量显示，大动脉d型转位时右心室的等容收缩时间与76例年龄相当的正常儿童左心室计算出的相同间期相似。另一方面，大动脉d型转位时右心室的电机械延迟明显大于正常受试者的左心室。得出的结论是，大动脉d型转位时右心室射血前期延长不是右心室功能障碍的结果，而仅仅是电机械延迟更长的结果。
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