肺动脉高压患者下腔静脉塌陷指数及血流频谱与肺动脉压力的相关性分析

摘要

目的:利用超声心动图技术研究肺动脉高压患者下腔静脉塌陷指数(cIVC)及多普勒血流频谱形态与肺动脉压力的相关性.方法:经胸超声心动图常规对76例肺动脉高压组患者(其中34例为轻度、27例为中度、15例为重度)及46例健康体检者作为对照组分别测量其在呼气末及吸气末时下腔静脉的内径,计算下腔静脉塌陷指数,同时比较下腔静脉血流频谱形态.结果:三组肺动脉高压患者(轻度组、中度组及重度组)呼气末以及吸气末下腔静脉的内径值均高于对照组(P<0.05),cIVC均低于对照组(P<0.05);中度及重度肺动脉高压组下腔静脉频谱S波、D波、a波与对照组比较有差异(P<0.05).结论:下腔静脉塌陷指数及血流频谱形态对肺动脉高压具有重要的预测价值.%Objective:To analyze the correlation of the collapsible index of inferior vena cava ( cIVC ) and the Doppler flow pattern with pulmonary artery pressure by echocardiography technology in the patients with pulmonary hypertension. Methods: The internal diameter of the inferior vena cava was measured in 76 cases of pulmonary hypertension patients ( including 34 cases of mild severity, 27 cases of moderate severity, and 15 severe cases) and 46 healthy subjects as the control group at the end of expiration and inspiration by conventional transthoracic echocardiography, the collapsible index of inferior vena cava was calculated, at the same time, inferior vena caval flow spectrum feature was compared. Results:The internal diameter of inferior vena cava of three group of patients with pulmonary hypertension ( mild group, moderate group and severe group) at the end of expiration and inspiration was higher than that of the control group ( P<0.05) , cIVC of the treatment group was lower than that of the control group ( P<0.05) . S wave and D wave, a wave of inferior vena cava spectrum of moderate and severe pulmonary hypertension group were different from that of the con-trol group ( P<0.05) in comparison. Conclusion:Collapsible index of inferior vena cava and blood flow spec-trum feature have important predictive value for pulmonary hypertension.