主肺动脉与右心室肥大相关性的CT研究

摘要

Objective To investigate the correlation between main pulmonary artery and right ventricular hypertrophy. Methods 60 patients with chronic obstructive pulmonary disease were randomly selected and examined with CT scan, under the electrocardiogram, ultrasound and divided into the right ventricular hypertrophy group (observation group) and no right ventricular hypertrophy group (control),30 patients for each. Main pulmonary artery diameter (MPAD) and ascending aorta diameter (AAD) were measured on the CT to calculate the ratio (MPAD/AAD). Results When the MPAD/AAD≤ 1.1, there was no significant difference between the two groups; while MPAD/AAD ＞ 1.1, the two groups were significantly different(P＜0.01); when the MPAD/AAD＞1.1, it predicts the sensitivity, specificity and positive predictive value of right ventricular hypertrophy were 86.7%, 96.7%, 96.3% respectively. Conclusion MPAD/AAD＞1.1 could be a new target for CT diagnosis to right ventricular hypertrophy.%目的 研究主肺动脉与右心室肥大的相关性.方法 随机选择具有慢性阻塞性肺部疾病患者60例进行CT扫描,根据心电图、超声心动图结果分为右心室肥大组(研究组)和右心室不肥大组(对照组)各30例,在CT上测量主肺动脉直径(MPAD)和升主动脉直径(AAD),计算其比值(MPAD/AAD).结果 于MPAD/AAD≤1.1时,两组之间差异无显著性(P＞0.05);于MPAD/AAD＞1.1时,两组之间差异有极显著性(P＜0.01);以MPAD/AAD＞1.1预测右心室肥大的敏感性、特异性、阳性预测值分别为86.7%、96.7%、96.3%.结论 MPAD/AAD＞1.1可以作为CT诊断右心室肥大的一种新指标.