| Role of 2-dimensional Doppler echo-cardiography in screening portopulmonary hypertension in portal hypertension patients. | |
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MedLine Citation:
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PMID: 19357029 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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BACKGROUND: Portopulmonary hypertension (PPH) is difficult to recognize in the early and middle stages because it is frequently asymptomatic. As right ventricular function is impaired in patients with moderate and severe PPH, any dramatic hemodynamic changes in liver transplantation or other procedures may result in death from pulmonary and cardiac events. In this study, we investigated the prevalence of PPH in patients with portal hypertension (PHT) mainly caused by hepatitis B virus, and evaluated the effect of 2-dimensional Doppler echocardiography (2D-ECHO) in screening for PPH. METHODS: One hundred and five PHT patients received transthoracic 2D-ECHO preoperatively, systolic pulmonary arterial pressure (SPAP, normal range <30 mmHg) and pulmonary acceleration time (PAT, normal range >or=120 msec) were measured to screen for PPH (positive result: SPAP >or=30 mmHg and/or PAT <100 msec). Subsequently, pulmonary hemodynamic parameters were measured by right heart catheterization (RHC) for definitive diagnosis of PPH. The results of the two methods were compared to assess the screening effect of 2D-ECHO. RESULTS: The prevalence of PPH in this study was 3.8% (4/105). About 90% (95/105) of patients had a detectable tricuspid regurgitation by 2D-ECHO and the mean SPAP was 27.7+/-5.9 mmHg. Twenty-two of these 95 patients had an SPAP >30 mmHg. The mean PAT of all patients was 140+/-23 msec and 5 were <100 msec. Twenty-two patients were screened out by 2D-ECHO and 4 were diagnosed by RHC. A positive significant correlation (r=0.55, P<0.01) was found between SPAP measured by 2D-ECHO and mean pulmonary artery pressure (MPAP) measured by RHC, and a weak but significant negative correlation (r=-0.27, P=0.005) existed between PAT and pulmonary vascular resistance (PVR). The sensitivity, specificity, agreement rate, positive predictive value and negative predictive value of the screening test were 100%, 82%, 83%, 18% and 100%, respectively. CONCLUSIONS: The prevalence of PPH in this study is lower than in Western countries. As a screening test, 2D-ECHO has very high sensitivity and negative predictive value. A negative test result can directly be used to exclude PPH, while a positive result should be confirmed by RHC. |
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Authors:
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Rong Hua; Yong-Wei Sun; Zhi-Yong Wu; Wei Cheng; Qing Xu; Hui Cao; Meng Luo |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Hepatobiliary & pancreatic diseases international : HBPD INT Volume: 8 ISSN: 1499-3872 ISO Abbreviation: HBPD INT Publication Date: 2009 Apr |
Date Detail:
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Created Date: 2009-04-09 Completed Date: 2009-06-30 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101151457 Medline TA: Hepatobiliary Pancreat Dis Int Country: China |
Other Details:
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Languages: eng Pagination: 157-61 Citation Subset: IM |
Affiliation:
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Department of General Surgery, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200127, China. |
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| MeSH Terms | |
Descriptor/Qualifier:
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Adolescent Adult Aged Echocardiography, Doppler / methods* Female Heart Catheterization Humans Hypertension, Portal / ultrasonography* Hypertension, Pulmonary / ultrasonography* Male Middle Aged Pulmonary Wedge Pressure |
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