The value of Doppler echocardiography in assessment of pulmonary capillary wedge pressure in pulmonary hypertension

VernacularTitle:超声心动图评估肺高压患者肺毛细血管楔压
Author: Zhuang TIAN ; Xiaoxiao GUO ; Yongtai LIU ; Mengtao LI ; Xiaofeng ZENG ; Quan FANG
Publication Type:Journal Article
Keywords: Hypertension,pulmonary; Echocardiography; Pulmonary wedge pressure
From: Chinese Journal of Internal Medicine 2012;51(6):449-452
CountryChina
Language:Chinese
Abstract: Objective To explore the association between Doppler echocardiography parameters and pulmonary capillary wedge pressure (PCWP) obtained by right heart catheterization (RHC) in patients with pulmonary hypertension (PH).Methods RHC and a simultaneous echocardiography were performed in 86 PH patients.The correlation between the echocardiographic parameters and PCWP was analyzed.Results The early diastolic velocity(E) of mitral valve blood flow was significantly correlated with PCWP ( γ =0.36,P ＜0.01 ).Tissue Doppler imaging measured the diastolic velocity of mitral annulus on the lateral(E'L)and the septal (E'S) wall.Then the average E'M was calculated.The ratio of E to E'L,E'S and E'M showed a strong correlation with PCWP ( γ =0.62,0.34 and 0.47 respectively,P ＜ 0.01 ).E/E'L ＜ 6 accurately predicted 100％ PCWP≤ 15 mm Hg (1 mm Hg =0.133 kPa),and E/E'L ＞ 15 could predict PCWP ＞ 15 nun Hg with specificity of 98.5％.Conclusion There are positive correlation between E/E' and PCWP obtained by RHC in PH patients.