Dynamic observation on optimal time of coronary angiography performed using 1 28-MSCT after taking nitroglycerin and its significance
10.13481/j.1671-587x.20160235
- VernacularTitle:128排CT冠状动脉造影前硝酸甘油最佳含服时间的动态观察及其意义
- Author:
Wei WANG
;
Fenglei ZHANG
;
Lili ZHOU
;
Hong WANG
;
Xiaoping ZHONG
;
Hailian SHI
- Publication Type:Journal Article
- Keywords:
coronary artery;
multislice spiral;
nitroglycerin;
angiography;
coronary artery calcium score
- From:
Journal of Jilin University(Medicine Edition)
2016;42(2):375-379
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the optimal time of coronary computed tomography angiography (CCTA) after taking nitroglycerine,and to provide basis for improving the image quantity of CCTA .Methods:43 patients underwent CCTA were scanned with coronary artery calcium score (CACS)after taking nitroglycerin 0,3,5 and 10 min.Then the diameters of the same coronary artery from the same anatomic location and the expanding rates were measured,and the change regular was analyzed with single factor analysis of variance of SPSS 17.0 software. Results:The average coronary artery expanding rate was 8% 3 min after taking nitroglycerin, and the difference was significant compared with 0 min (P<0.05);but there were 5 patients whose coronary artery didn’t expand. The coronary artery expanded obviously 5 and 10 min after taking nitroglycerin compared with 0 and 3 min (P<0.05);the maximum expanding rates at 5 and 10 min were both 38%.There were 13 and 28 patients whose coronary artery reached the maximum expanding rates (17% and 19%)5 and 10 min after taking nitroglycerin, respectively;the coronary artery of 2 patients expanded at a same level at 5 and 10 min.The average expanding rates of coronary artery had no significant differences between 5 and 10 min (P>0.05 ).Conclusion:Taking nitroglycerin can significantly expand the diameter of coronary arteries.It is necessary to perform CCTA during 5-1 0 min after taking nitroglycerine.
