Journal of Chest Surgery

The Korean Society for Thoracic and Cardiovascular Surgery (대한심장혈관흉부외과학회)
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Preoperative Risk Factors for the Prognosis of Mitral Regurgitation in Patients with Coronary Artery Stenosis and Mitral Regurgitation Who Underwent Coronary Artery Bypass Surgery Alone

승모판폐쇄부전증을 동반한 관상동맥협착증 환자에서 시행한 단독 관상동맥우회술 후 승모판폐쇄부전증의 예후에 영향을 미치는 수술 전 요인

  • Jin, Ung (Dept. of Thoracic and Cardiovascular Surgery, College of Medicine, The catholic University of Korea) ;
  • Park, Chan-Beom (Dept. of Thoracic and Cardiovascular Surgery, College of Medicine, The catholic University of Korea) ;
  • Choi, Si-Young (Dept. of Thoracic and Cardiovascular Surgery, College of Medicine, The catholic University of Korea) ;
  • Kim, Chi-Kyung (Dept. of Thoracic and Cardiovascular Surgery, College of Medicine, The catholic University of Korea)
  • 진웅 (가톨릭대학교 의과대학 흉부외과학교실) ;
  • 박찬범 (가톨릭대학교 의과대학 흉부외과학교실) ;
  • 최시영 (가톨릭대학교 의과대학 흉부외과학교실) ;
  • 김치경 (가톨릭대학교 의과대학 흉부외과학교실)
  • Published : 2004.05.01
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Abstract

Background: In the operation for coronary artery stenosis, the procedures for mitral regurgitation are restricted to cases of more than moderate mitral regurgitation or for the lesions in leaflets. This is based on the belief that the less than mild regurgitation are a form of reversible change results from ischemia with coronary artery stenosis. We studied the changes and prognostic factors of mitral regurgitation in patients with coronary artery stenosis and mitral regurgitation who underwent coronary artery bypass surgery alone. Material and Method: We reviewed the medical records of 90 patients with coronary artery stenosis and mitral regurgitation who underwent coronary artery bypass surgery alone by a single surgeon from Jan. 1995 to Dec. 2002, We grouped the patients according to the postoperative changes of mitral regurgitation, and then we statistically compared the findings of echocardiogram between preoperative and last follow up. Result: There were 24 cases with progression of mitral regurgitation, 12 cases without changes, 54 cases with improvements of mitral regurgitation in total 90 patients. The bypass to LAD was proven as the significant prognostic factor of mitral regurgitation. The preoperative end diastolic left ventricular volume index were higher in aggravated group with 105.38$\pm$38.89 $m\ell$ compared to 71.75$\pm$28,45 $m\ell$ in improvement group, and 84.00$\pm$11.66 $m\ell$ in no change group. The grade of preoperative mitral regurgitation did not show significant differences among the groups. Conclusion: The mitral regurgitation in patient with coronary artery stenosis can be improved after the coronary artery bypass surgery alone. However, the expectation of improvements based on the degree of preparative mitral regurgitation can not be justified, therefore, the procedures for mitral regurgitation should be aggressively considered even in the cases of mild mitral regurgitation. Also, further study should be performed to identify the exact prognostic factors of mitral regurgitation including the left ventricular volume index, and whether the left anterior descending artery has been bypassed.

배경: 관상동맥우회술을 시행하는 경우 동반한 승모판폐쇄부전증에 대한 술식은 중등도 이상의 승모 판폐쇄부전증을 보이거나 판첨에 뚜렷한 병변이 확인된 경우에 한정되어 시행되고 있다. 이는 관상 동맥협착증에 동반한 대다수 경도의 승모판폐쇄부전증이 관상동맥협착증에 기인한 허혈성변화에 따른 가역적인 이상으로 판단하는 것에 기인한다. 저자들은 관상동맥협착증에 동반한 승모판폐쇄부전증을 보이는 환자에서 관상동맥우회술만을 단독으로 시행하는 경우 승모판폐쇄부전증이 어떻게 변화하는가를 관찰하고 그 관련요인을 조사하였다. 대상 및 방법: 승모판폐쇄부전증을 동반한 관상동맥협착증 환자 중 1995년 1월부터 2002년 12월까지 단일 술자에 의해 체외순환하 관상동맥우회술만을 받았던 90명의 환자들의 의무기록을 후향적으로 조사하여 수술 전과 최종 추적관찰에서 얻어진 심초음파 결과를 비교하였다. 승모판폐쇄부전증의 변화에 따라 악화된 군, 변화 없는 군, 호전된 군으로 분류하고, 각 군 간의 수술전 심초음파 검사기록과 수술 중 인자들에 대한 통계적인 상관관계를 확인하였다. 결과: 총 90예의 환자 중 수술 후 승모판폐쇄부전증이 악화된 환자는 24명, 변화 없는 군 12명, 호전된 군 54명이었다. 승모판폐쇄부전증의 악화와 유의하게 관련이 있었던 인자는 좌전하행지로의 우회술 여부였으며, 유의성은 확인하지 못하였지만 수술 전 이완기말 좌심실용적은 승모판폐쇄부전증이 호전된 군에서 71.75$\pm$28.45 $m\ell$, 변화 없는 군 84.00$\pm$11.66 $m\ell$, 악화된 군 105.38$\pm$38.89 $m\ell$로 승모판폐쇄부전증이 악화된 군에서 가장 높은 것으로 확인되었다. 수술 전 승모판폐쇄부전증의 정도는 군 간의 유의한 차이를 확인할 수 없었다. 결론: 관상동맥협착증에 동반된 승모판폐쇄부전증은 관상동맥우회술의 단독시행으로 호전을 기대할 수 있을 것으로 생각된다. 그러나 수술 전 승모판폐쇄부전증의 정도로 그 예후를 예측할 수 없어, 초기 단계의 승모판폐쇄부전증도 교정술을 적극적으로 고려하는 것이 좋을 것으로 생각되며, 수술 전 심초음파상 좌심실용적과 수술 중 좌전하행지의 관상동맥우회술 여부 등을 포함한 승모판폐쇄부전증의 예후 인자를 보다 정확하게 규명하기 위한 추가적인 연구가 시행되어야 할 것으로 생각된다.

Keywords

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