Transaortic Mitral Commissuroplasty with a Bentall Procedure or Artic Valve Replacement

대동맥 판막 치환술과 벤탈 수술 환자에서 대동맥 근부를 통한 승모판막 교련 성형술

  • Kim, Si-Wook (Department of Thoracic and Cardiovascular Surgery, Chungbuk National University Hospital, Chungbuk National University College of Medicine) ;
  • Park, Pyo-Won (Department of Thoracic and Cardiovascular Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine)
  • 김시욱 (충북대학교 의과대학 부속병원 흉부외과학교실) ;
  • 박표원 (성균관대학교 의과대학 삼성서울병원 흉부외과학교실)
  • Published : 2007.11.05

Abstract

Background: The reciptents of aortic valve replacement or a Bentall operation usually display various degrees of mitral regurgitation. When deciding whether or not to correct the mitral regurgitation, one must consider its severity, underlying causes and operative risk. Recently, the operation method for correcting the concomitant mitral regurgitation has been done through aortic root to reduce the operation time and the cardiac trauma. We report our experiences that transaortic mitral valve commissuroplasty done with aortic valve replacement or a Bentall operation has been a simple, less invasive, effective method in the operative management of mitral valve regurgitation without significant organic changes. Material and Method: Between June 2002 and June 2005, twenty patients under-went mitral valve commissuroplasty via the aortic root with aortic valve replacement (n=14) or a Bentall operation (n=7). The mitral valve regurgitation of the patients didn't exceed a moderate (grade 2) degree and there was no significant organic disease. The preoperative diagnosis of MR was established by TTE and intraoperative TEE, and the patients were followed postoperatively by TTE. The operative technique was a simple anterolateral commissuroplasty of the mitral valve with a single mattress suture via the transaortic annular approach after excision of the aortic valve leaflets. Result: The mean patient age was 56.2 years and 65% (n=13) were male. The preoperative MR was mild (grade 1) in 9 (45%), mild to moderate in 8 (40%), and moderate (grade 2) in 3 (15%) patients. There were no operative mortalities. The MR improved in all patients (p=0.002) and the left ventricular ejection fraction (LV EF) improved in 14 (70%) patients (p=0.005). The mean cross-clamp time for the patients who under- went aortic valve replacement with transaortic mitral repair was $62.1{\pm}13.9 min$ and this was $137.5{\pm}7.2 min$ for the patients who underwent a Bentall operation with transaortic mitral repair. Conclusion: For selected patients without significant mitral organic disease, transaortic mitral valve commissuroplasty combined with aortic valve replacement or a Bentall operation may be a feasible, effective method without adding significant aortic cross clamping time and more cardiotomy.

서론: 대동맥 판막 치환술 또는 벤탈수술 대상이 되는 환자들에서 다양한 정도의 승모판막 폐쇄부전이 동반될 수 있다. 대동맥 판막질환과 동반된 승모판막 폐쇄부전의 교정여부를 결정하기 위해서는 폐쇄부전의 원인과 정도, 추가 수술의 위험성을 고려해야 한다. 최근에는 수술시간과 심장 절개를 최소화하는 대동맥 근부를 통한 다양한 승모판막 수술이 시도되고 있다. 본원에서는 대동맥 판막 치환술 또는 벤탈 수술과 함께 기질적 변화가 심하지 않은 승모판막 폐쇄부전증에 대해 효과적인 대동맥 근부를 통한 승모판막 교련 성형술을 시행하였기에 보고한다. 대상 및 방법: 2002년 6월부터 2005년 6월까지 20명의 환자에서 대동맥 판막 치환술(14명), 벤탈(Bentall) 수술(6명)과 함께 대동맥을 통한 승모판막 교련 성형술을 시행하였다. 모든 환자에서 승모판막은 기질적 변화가 심하지 않은 중등도(grade 2) 이하의 부전증을 보였다. 술 전 승모판막 폐쇄부전의 진단은 경흉부 심초음파와 수술 중 경 식도 심초음파로 확진하였으며 수술 후 경흉부 심초음파로 추적 관찰하였다. 모든 환자에서 대동맥판막엽을 제거한 후 대동맥 근부를 통해 한 번의 매트리스 봉합으로 승모판막 교련 성형술을 시행하였다. 결과: 환자들의 평균 나이는 56.2세였고 65% (13명)가 남자였다. 수술 전 승모판막 폐쇄부전 정도는 경도(mild, 1)가 9 (45%)명, 경도와 중등도 사이(mild to moderate)가 8 (40%)명, 그리고 중등 도(moderate, grade 2)가 3 (9%)명이었다. 수술 사망은 없었고 평균 추적기간은 28개월이었다. 경흉부 심초음파로 추적한 승모판막 폐쇄부전은 모든 예에서 호전되었으며(p=0.002) 심실 구출률은 75%에서 호전을 보였다(p=0.005). 평균 대동맥 차단시간은 대동맥 판막 치환술을 받은 환자들에서는 $62.1{\pm}13.9분$, 벤탈 수술을 받은 환자에서는 $137.5{\pm}7.2$분이었다. 결론: 중등도 이하의 승모판막 폐쇄부전을 갖는 선택적인 환자에서 대동맥 판막 치환술 또는 벤탈 수술 시에 대동맥을 통한 승모판막 교련 성형술은 대동맥 차단시간의 증가나 추가의 절개 없이 시행될 수 있는 비교적 간단하고 효과적인 방법이라고 생각한다.

Keywords

References

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