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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 (P0.05 ).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.
RESUMEN
Objective To investigate the relationship between body fat distribution and pulse wave velocity (PWV) in middle-aged and aged population. Methods Two hundred patients received health examination were enrolled into the male group (103 cases) and the female group (97 cases). Visceral fat volume (VFV), subcutaneous fat volume (SFV) and ba-PWV were determined. Results Compared to patients in the female group, patients in the male group had significantly higher VFV values [(3.17 ± 0.84) kg vs (2.30 ± 0.94) kg], and lower SFV values [(15.56 ± 3.49) kg vs (17.69 ± 4.82) kg], In the male group, there existed a positive correlation between ba-PWV and age, VFV, fasting blood glucose,SBP and DBP. In the female group, a positive correlation was found between ba-PWV and age, SFV, TG, BUN, SBP and DBP, while a negative correlation was observed for HDL-C and Apo A1. Conclusion There was gender differences in body fat distribution in middle-aged and aged healthy population. In the male group , age, VFV, SBP, and DBP were the only independent and significant risk factors for ba-PWV. In the female group , age, SBP and Apo A1 were the independent risk factors for ba-PWV.