Study on Correlation between Right Heart Function Parameters Evaluated by CTPA and the Severity of Pulmonary Embolism
Objective To investigate the correlation between right ventricular function parameters and the severity of pulmonary embolism(PE)evaluated by CT pulmonary angiography(CTPA).Methods 84 PE patients admitted to our hospital from January 2022 to June 2023 who were diagnosed with CTPA were selected as the observation group,and the observation group could be divided into high risk group(n=42)and low risk group(n=42)according to the pulmonary artery obstruction index(PAOI).In addition,84 patients with negative CTPA examination results were selected as the control group.CTPA imaging manifestations of PE were observed,pulmonary PAOI of high-risk group and low-risk group were compared,right heart function parameters of control group,high-risk group and low-risk group were analyzed,and the correlation between PAOI and right heart function parameters was further studied.Results CTPA examination showed that there were 485 central pulmonary arteries embolized in 84 PE patients,the involvement rate was 44.41％.PAOI in high-risk group was higher than that in low-risk group(P＜0.05).There were statistically significant differences in pulmonary trunk diameter,left ventricular short axis maximum diameter(LVMSA),right ventricular short axis maximum diameter(RVMSA)and ratio of right ventricular maximum diameter to left ventricular maximum diameter(RV/LV)among the three groups(P＜0.05).RVMSA and RV/LV in low-risk group were higher than those in control group(P＜0.05).Spearman rank correlation analysis showed that PAOI was positively correlated with pulmonary trunk diameter,RVMSA and RV/LV(P＜0.05).There was no correlation between PAOI and LV(P＞0.05).Conclusion CTPA can effectively diagnose PE,quickly evaluate the severity of PE and the change of right heart function and the correlation between them,and provide useful valuable information for the later treatment of PE patients.
万方数据
维普
