Correlation between pulmonary arterial presure and right ventricular function by echocardiography in chronic ;thromboembolic pulmonary hypertension / 中华超声影像学杂志

ABSTRACT

Objective To discuss the correlation between right ventricular function and systolic pulmonary artery pressure (PASP ) in patients with chronic thromboembolic pulmonary hypertension (CTEPH)and explore the change of right ventricular function under different degree of PASP.Methods One hundred and thirty-seven CTEPH patients were divided into four groups by PASP:Group Ⅰ (50 mmHg≤PASP<70 mmHg),20 cases;Group Ⅱ (70 mmHg≤PASP<90 mmHg),35 cases;Group Ⅲ,55 cases (90 mmHg ≤ PASP < 1 10 mmHg);Group Ⅳ (PASP ≥ 1 10 mmHg),27 cases.Echocardiographic parameters include:PASP,tricuspid regurgitation area (ATR ),left ventricular transverse diameter (LVTD), right ventricular transverse diameter (RVTD),inner diameter of main pulmonary artery (DMPA ),inner diameter of left arterial branch (DLPA ),inner diameter of right pulmonary arterial branch (DRPA ).Right ventricular function parameters include:tissue Doppler-derived tricuspid lateral annular systolic velocity (s'),tricuspid annular plane systolic excursion (TAPSE),RV index of myocardial performance (RIMP)and right ventricular fractional area change (FAC).Results There were significant differences in RVTD, TAPSE,FAC and RIMP in CTEPH patients under different PASP(P <0.05).RV structure and function was significantly correlated with PASP in CTEPH patients.With the elevation of PASP,RV was significantly enlarged and RV function becomes worse.Conclusions Echocardiography may contribute to evaluate RV function in CTEPH patients and provide basis for clinical treatment and prognosis evaluation.