Outcomes of the Modified Maze Procedure for Chronic Atrial Fibrillation Combined with Rheumatic Mitral Valve Disease

류마티스성 승모판막질환과 동반된 만성 심방세동 치료에 대한 변형 Maze 술식의 결과

  • Baek Man-Jong (Department of Thoracic and Cardiovascular Surgery, College of Medicine, Korea University) ;
  • Kim Jae-Hyun (Department of Cardiovascular Surgery, Sejong Heart Institute, Bucheon Sejong General Hospital) ;
  • Seo Hong-Joo (Department of Thoracic and Cardiovascular Surgery, College of Medicine, Chosun University) ;
  • Lee Chang-Ha (Department of Cardiovascular Surgery, Sejong Heart Institute, Bucheon Sejong General Hospital) ;
  • Oh Sam-Se (Department of Cardiovascular Surgery, Sejong Heart Institute, Bucheon Sejong General Hospital) ;
  • Na Chan-Young (Department of Cardiovascular Surgery, Sejong Heart Institute, Bucheon Sejong General Hospital)
  • 백만종 (고려대학교 의과대학 흉부외과학교실) ;
  • 김재현 (부천 세종병원 심장연구소 흉부외과) ;
  • 서홍주 (조선대학교 의과대학 흉부외과학교실) ;
  • 이창하 (부천 세종병원 심장연구소 흉부외과) ;
  • 오삼세 (부천 세종병원 심장연구소 흉부외과) ;
  • 나찬영 (부천 세종병원 심장연구소 흉부외과)
  • Published : 2006.09.01

Abstract

Background: The aim of this study was to investigate the mid-term outcomes of our modifications to the maze procedure using cryoablation for treating atrial fibrillation associated with rheumatic mitral valve disease. Material and Method: Between March 2000 and February 2004, 177 consecutive patients underwent the modified maze procedure with the use of cryoablation concomitant with mitral valve surgery for atrial fibrillation associated with rheumatic mitral valve disease, and were divided into three groups: (1) modified Cox-maze III (CM group, n=88): (2) modified Kosakai-maze (KM group, n=63): and (3) left atrial maze procedure (LA group, n=26). The postoperative and follow-up results were analyzed and compared between the groups. Result: There were three hospital deaths (1.7%) and no significant differences in the incidence of postoperative complications between the three groups. The operative time, such as the cardiopulmonary bypass and aortic crossclamp time, were significantly longer in the CM group than in the KM and LA groups, respectively (p<0.0001). The mean follow-up was $22.4{\pm}15.1$ months ($1\sim52.6$ months) for all patients. One late death developed in the CM group (0.0%). At last follow-up, 139 patients exhibited sinus rhythm (79.9%), which was also regained in 67 patients (77.9%) in the CM group, 50 (80.7%) in the KM group and 22 (84.6%) in the LA group (p=0.743). The actuarial freedom from stroke at 4 years was $84.5{\pm}9.4%$ in the CM group, $95.0{\pm}4.9%$ in the KM group, and $92.9{\pm}6.9%$ in the LA group (p=0.916). Conclusion: The modified maze procedure using cryoablation is safe and effective in treating chronic atrial fibrillation associated with rheumatic mitral valve disease.

배경: 본 연구에서는 류마티스성 승모판막질환과 동반된 만성 심방세동의 치료에서 냉동절제술을 이용한 변형 maze 술식들의 동율동 회복률 및 중기 결과에 대해 알아보고자 하였다. 대상 및 방법: 2000년 3월부터 2004년 2월까지 류마티스성 승모판막질환과 동반된 만성 심방세동 환자에서 승모판막수술과 동시에 냉동절제술을 이용하여 변형 maze술을 받은 177명의 환자를 대상으로 Cox-maze III (CM군, n=88), Kosakai-maze (KM군, n=63), 그리고 Left atrial maze (LA군, n=26) 세 군으로 분류하여 수술 전, 후 결과 및 동율동 회복률과 중기 결과에 대해 후향조사하였다. 결과: 술 후 병원 사망은 CM군 2명(2.3%)과 KM군 1명(1.6%)을 포함한 3명(1.7%)에서 있었으며 술 후 합병증 발생률에서 세군 간에 차이는 없었다. 총 체외순환 및 대동맥차단 시간은 CM군에서 다른 두 군에 비해 유의하게 길었다(p<0.0001). 생존자 174명에서 평균 $22.4{\pm}15.1$개월($1\sim52.6$개월)을 추적조사한 결과 만기 사망은 CM군 1명(0.6%)에서 있었다. 마지막 추적조사에서 동율동 회복률은 전체환자의 79.9%, CM군 77.9%, KM군 80.7% 그리고 LA군에서는 84.6%였다(p=0.743). 술 후 4년 동안 뇌졸중으로부터의 자유도는 CM군 $84.6{\pm}9.4%$, KM군 $95.0{\pm}:4.9%$ 그리고 LA군에서는 $92.9{\pm}6.9%$였다(p=0.916). 결론: 류마티스성 승모판막질환과 동반된 만성 심방세동 치료에서 승모판막수술과 동반하여 시행하는 냉동절제술을 이용한 변형 maze 술식들은 비교적 안전하게 시행될 수 있으며 심방세동 치료에 효과적이다.

Keywords

References

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