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目的探讨心电图SⅠQⅢTⅢ在慢性肺动脉高压患者中的发生率及其对心肺功能的预测价值。方法对经右心导管确诊为肺动脉高压的50例患者,收集心电图及临床资料,分析SⅠQⅢTⅢ在慢性肺动脉高压患者中的发生率,并将患者按有无典型的SⅠQⅢTⅢ分为A、B两组,比较两组肺动脉高压的程度、肺动脉高压功能评级和6分钟步行试验距离。结果①有23(46%)例出现典型SⅠQⅢTⅢ改变,9(18%)例出现不典型的SⅠQⅢ、SⅠTⅢ、QⅢTⅢ改变;②A、B两组肺动脉高压程度无明显差别,A组肺动脉高压功能评级高于B组(2.39±1.03vs1.78±0.64,p<0.05),6分钟步行试验距离低于B组(325.45±126.62vs475.84±165.23m,p<0.001)。结论①对心电图出现SⅠQⅢTⅢ的患者,在排除急性肺栓塞后应考虑存在慢性肺动脉高压可能;②慢性肺动脉高压患者心电图出现SⅠQⅢTⅢ者的心肺功能损害较无SⅠQⅢTⅢ者差。
Objective To investigate the incidence of electrocardiogram (SⅠQⅢTⅢ) in patients with chronic pulmonary hypertension and its predictive value on cardiopulmonary function. Methods 50 patients diagnosed as pulmonary hypertension by right heart catheterization were collected ECG and clinical data to analyze the incidence of SⅠQⅢT Ⅲ in patients with chronic pulmonary hypertension and patients with or without typical SⅠQ Ⅲ T Ⅲ were divided into A and B groups, The extent of pulmonary hypertension, pulmonary function classification and 6-minute walking distance were compared between the two groups. Results ① The typical SⅠQⅢTⅢ changes occurred in 23 (46%) cases, and the atypical SⅠQⅢ, SⅠTⅢ, QⅢTⅢ changes occurred in 9 (18%) cases. ② The pulmonary arterial hypertension in A and B groups showed no significant difference. In group B (2.39 ± 1.03 vs 1.78 ± 0.64, p <0.05), the distance at 6-minute walk was lower than that in group B (325.45 ± 126.62 vs475.84 ± 165.23m, p <0.001). Conclusions ① In patients with SⅠQⅢTⅢ on electrocardiogram, the possibility of chronic pulmonary hypertension should be considered after excluding acute pulmonary embolism. ② The cardiorespiratory impairment of SⅠQⅢTⅢ in ECG of patients with chronic pulmonary hypertension is worse than that without SⅠQⅢTⅢ.