
413 patients were operated with mitral valve replacement at Viet Duc Hospital (Using Saint Jude Master mechanical valve) from 2006 to 2010: Mean age 45.03 + or - 10.73, in which female 56.4 percent and 42.5 percent of them within reproductive period. Prevalence of reoperated and operated after other catherterizations like percutaneous baloon valvulotomy; open valvulotomy; mitral valve repair/replacement was high. Most of patients went to hospital in severe state. Results of surgery: Mortality rate was low, early 0.24 percent and mid-term 1.78 percent; Morbidity rate was relatively low: bleeding-reoperation 2.18 percent; mechanical valve obstruction 0.24 percent; Improved clinical features: NYHA decended from 2.03 + or - 0.48 to 1.75 + or - 1.14. Improved laboratory findings: Pulmonary pressure decended from 49.27 + or - 15.26mmHg to 33.18 + or - 6.94mmHg; Maximum mitral valve gradient decended from 18.09 + or - 7.57mmHg to 10.65 + or - 3.40mmHg.
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