title: Changes in cardiac function reserve after percutaneous balloon mitral valvuloplasty: a longterm follow-up study.
abstract: OBJECTIVE: To evaluate the long-term effect of percutaneous balloon mitral valvuloplasty (PBMV) by observing the changes in mitral valve reserve after PBMV and during the long-term follow-up and by exploring the relations of these changes with stress echocardiographic scores. METHODS: Stress echocardiogaphy was performed in patients receiving PBMV for mitral stenosis both after surgery and during the long-term follow-up study, and Wilkins scores of the patients were obtained pre-operatively. Intravenous isoproterenol was administered before test to increase the heart rate to simulate mild, moderate and heavy exercises, and the indices for cardiac function were recorded. RESULTS: After PBMV, mitral valve reserve and cardiac function reserve were partly restored, and stress echocardiographic score was closely related to long-term cardiac function ( = 0.82). CONCLUSIONS: PBMV can increase mitral valve area and partly resotreit funtional reserve, and stress echocardiographic score is more predictive of the long-term cardiac function than Wilkins score.
authors.affiliation: Department of Cardiology, Zhujiang Hospital, First Military Medical University, Guangzhou 510282, China.
authors.forename: Xiang-Yang
authors.initials: XY
authors.lastname: Fu
authors.forename: Xian-Bo
authors.initials: XB
authors.lastname: Peng
authors.forename: Jun-Hao
authors.initials: JH
authors.lastname: Lu
authors.forename: Wen-Sheng
authors.initials: WS
authors.lastname: Ye
authors.forename: Qiang
authors.initials: Q
authors.lastname: Fu
authors.forename: Xia
authors.initials: X
authors.lastname: Zhao