The Clinical Results of Heart Valve Replacements

In spite of the improvement in the quality of artificial heart valves and surgical techniques, the incidence of the complications following valve replacement is still high. We reviewed the clinical results of the valve replacements peformed in Korean University Anam Hospital during the last 26 years. Material and Method: The data of 571 patients who received valve replacement between December 1976 and December 2003 were reviewed. Result: There were 304 cases of MVR which was the most common procedure performed. There were 122 cases of AVR, and 111 cases of AVR with MVR. Among the 47 patients who received redo operation 38 cases were redo cases including 31 cases of MVR. $32.5\%$ of the patients who had tissue valve replacement had second valve replacement with 10.2 $\pm$ 3.9 years interval. $24.3\%$ (139/571) of the patients developed valve related complications and cerebral infarction was the highest in frequency. Atrial fibrillation was related with increased complication rates and the mechanical valve replaced group had higher hemorrhagic complication rate than tissue valve replaced group. The operative mortality was $3.68\%$ and the most common cause of the failure was low output syndrome. The operative mortality was higher in the patient group who had valve replacement before the year 1990. The patient group who had mechanical valve replacement had higher operative mortality rate th;3n the tissue valve group. The 5-year survival rate was $92.2\%$ and 10 year survival rate was $85.7\%$. Conclusion: The operative mortality of valve replacement has been improved. The mechnical valve replaced patients had higher hemorrhagic complication rate than the tissue valve replaced patients and more tissue valve replaced patients received redo valve replacement.

심장 판막 치환술의 임상 성적

인공심장판막의 성능 향상과 심장 수술의 발전에도 불구하고 심장판막치환술에 따르는 합병증은 아직도 빈도가 높다. 고려대학교 안암병원에서는 지난 26년간 시행한 심장판막치환술의 임상성적을 분석하였다. 대상 및 방법: 1916년 12월부터 2003년 12월까지 고려대학교부속 안암병원에서 심장판막치환술을 받은 환자 571명을 대상으로 하였다. 결과: 승모판치환술이 304예로 가장 많았고 대동맥판막치환은 122예였으며 대동맥판막과 승모판 동시치환은 111예였다. 47명의 환자가 두번째 수술을 받았으며 그 중 재치환술은 승모판재치환술 31예를 포함하여 38예였다. 조직판막치환군의 $32.5\%$가 재치환술을 받았고 평균 10.2$\pm$3.9년만에 재수술을 받았다. $24.3\%$ (139/571)에서 판막관련 합병증이 나타났으며 뇌경색의 빈도가 가장 높았다. 심방세동이 동반된 환자군의 합병증 발생빈도가 높았고 기계판막을 치환한 환자군에서는 출혈합병증이 많았다. 수술사망률은 $3.68\%$였고 수술사망의 원인은 저심박출증후군이 가장 많았다. 90년 이전의 수술사망률이 이후보다 높았으며 기계판막치환군의 수술사망률이 조직판막치환군보다 높았다. 5년 생존율은 $92.2\%$, 10년은 $85.7\%$로 나타났다. 결론: 심장판막치환술의 수술사망률은 향상되었으며 기계판막치환군에서는 출혈합병증이 많았고 조직판막치환군에서는 재치환술의 빈도가 높았다.