Objective To investigate long-term echocardiography characteristics and their clinical significance of patients after mitral valve replacement (MVR). Methods We retrospectively analyzed clinical data of 204 patients who underwent prosthetic MVR and finished echocardiography examination at least 5 years after surgery in West China Hospital of Sichuan University. There were 44 male patients and 160 female patients with their age of 23 to 73 (50.9±10.6)years. Postoperatively, all the patients were followed up for 5-15 (7.9±2.3)years and regularly received echocardiography examination at the outpatient department. Analysis variables included left atrium (LA) dimension, left ventricle (LV) dimension,right atrium (RA) dimension, right ventricle (RV) dimension, left ventricular ejection fraction (LVEF) and effective orificearea (EOA) of the mitral valve. Results Long-term echocardiography showed that LA and LV dimensions were signifi-cantly smaller than preoperative dimensions (P<0.05), while RA and RV dimensions were not statistically different from preoperative dimensions (P>0.05). Long-term LVEF was significantly higher than preoperative value (P<0.05). Long-term EOA was 1.1-4.8 (2.3±0.5)cm2, including EOA of 1.1-1.4 cm2 in 7 patients (3.4%,7/204),and 1.6-1.9 cm2in 42 patients (20.6%,42/204). During long-term follow-up, 7 patients underwent their second heart surgery, including2 patients with prosthetic valve dysfunction, 1 patient with prosthetic perivalvular leak and severe hemolytic anemia,3 patients with severe tricuspid regurgitation which were not improved after medication treatment, and 1 patient with moderateaortic valve stenosis and regurgitation. Two patients had left atrial thrombosis during follow-up, including 1 patient who died of endocarditis 7 years after surgery, and another patient who was still receiving conservative therapy and further follow-up. Conclusion Concomitant tricuspid or aortic valve disease should be actively treated during MVR, and postoperative patients need better follow-up. Many patients after MVR need long-term cardiovascular medication treatment during follow-up in order to improve their heart function and long-term survival rate.
Citation: XIAO Xijun,ZHU Xiliang,TANG Hong,ZHOU Wenxia,ZHU Wei,BAI Wenjuan.. Long-term Echocardiography Characteristics and Their Clinical Significance of Patients after Mitral Valve Replacement. Chinese Journal of Clinical Thoracic and Cardiovascular Surgery, 2013, 20(2): 148-151. doi: 10. 7507/1007-4848. 20130047 Copy
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