摘要
Abstract
Objective To investigate the value of multislice spiral CT pulmonary angiography ( CTPA) in diagnosis of the severe degree of patients with pulmonary embolism ( PE) .Methods From May 2010 to May 2014, 72 PE patients were enrolled, and in the same time, non PE patients of 36 cases were enrolled as the control group, all the patients with PE were examined by CTPA and Qanadli score.According to Qanadli score, pulmonary embolism index were calculated, and the PE patients were divided into 3 groups, pulmonary embolism index <50%as group A ( n =30) , from 50%to 80%as group B ( n =23), >80%as group C ( n =19).Right ventricular short axis maximum diameter (RV), left ventricular short axis maximum diameter ( LV) , right /left ventricular short axis diameter ratio ( RV/LV) , the largest diameter of pulmonary artery and superior vena cava diameter were compared among the 4 groups;analyzed the correlation between the pulmonary embolism index and systolic blood pressure.Results Group A’ s LV, RV, RV/LV, superior vena cava diameter were higher than that of control group ( P <0.05);RV, RV/LV, diameter of pulmonary artery were lower than those of group B, and the diffe-rence was statistically significant ( P <0.05);group B’s RV/LV, pulmonary artery diameters were lower than that in group C, and the difference was statistically significant ( P <0.05).Pulmonary embolism index: group A was (50.12 ± 19.47)%, group B was (52.37 ±20.11)%, group C was (52.90 ±21.17)%; systolic blood pressure: group A was (93.12 ±16.44) mm Hg, group B was (92.41 ±17.44) mm Hg, group C was (91.34 ±16.22) mm Hg, pulmonary em-bolism index and systolic blood pressure were negatively correlated ( r =-0.758, P <0.01).Conclusion CTPA parame-ters ( LV, RV, RV/LV, diameter of pulmonary artery, superior vena cava diameter) in patients with PE can be used to evalu-ate pulmonary embolism severity index, pulmonary embolism index and systolic blood pressure were negatively correlated, CT-PA has better clinical value in the diagnosis of PE.关键词
多层螺旋CT肺动脉造影/肺栓塞/动脉收缩压Key words
Multislice spiral CT pulmonary angiography/Pulmonary embolism/Artery systolic pressure
