Postoperative Arrhythmias after Open Heart Surgery in Adults

성인에서의 개심술후 부정맥

  • Published : 1998.11.01

Abstract

Background: We prospectively investigated types, incidences, and risk factors for arrhythmias after open heart surgery in adults. Materials and methods: From June 1994 to May 1995, we performed 302 cases of adult cardiac surgery at our department. This study group consisted of 150 men and 152 women, with a mean age of 43.9±28.0(range 16 to 75)years. We included all the patients irrespective of their operative types or disease entities. Results: The overall incidence of arrhythmias after open heart surgery in adults was 58.3%. The incidence of postoperative arrhythmias for redo-valvular heart surgery was 77.8%, and those for simple valvular procedure, coronary artery bypass surgery, aortic surgery, and congenital heart disease were 70.8%, 45.3%, 40.0%, and 29.5%, respectively. Eight out of twelve risk factors showed statistical significance for the development of postoperative arrhythmias. They were preoperative history of arrhythmias, antiarrhythmic drug medication, previous cardiac surgery, larger left ventricular end-diastolic, end-systolic dimension, left atrial dimension on preoperative echocardiogram, longer cardiopulmonary bypass time and aortic cross clamping time. Univariated analyses for age and types of cardioplegic solution did not show statistical significance. Conclusions: Prospective study on postoperative arrhythmias occurrence, treatment and prevention of is warrauted to draw more clear conclusion.

연구배경 : 개심술 후의 부정맥은 빈번하게 발생하는 합병증이며 그 종류도 다양할 뿐 아니라, 수술후 발생하는 부정맥은 심박출량의 저하 등 심각한 결과를 초래할 가능성이 있다. 재료 및 방법 : 본 연구는 이러한 부정맥의 예방과 치료의 방침을 결정하는데 기본적인 자료를 제공하고자 1994년 6월부터 1995년 5월까지 1년간 서울대학교병원 흉부외과에서 개심술을 시행 받은 성인 환자들을 대상으로 술후 부정맥의 양상을 전향적으로 분석하여 위험인자를 유추하였다. 결과 : 총 302명을 대상으로 하였는데, 그 중 남자가 150명이었고 여자는 152명이었으며, 평균 연령은 43.9세 (16세부터 75세까지) 였다. 대상환자 모두 술전 및 술후 표준 12-lead EKG 및 중환자실에서의 24시간 심전도 감시장치로 부정맥을 진단하였으며 수술직후 집중감시병동에서는 동맥혈 가스분석 및 혈중 potassium 농도를 측정하여 이상이 있으면 교정하였고 단순히 산혈증이나 저칼륨혈증에 의한 부정맥은 연구대상에서 제외하였다. 술후 부정맥의 전체 발생률은 58.3%이었는데, 판막 재수술의 경우 부정맥이 77.8%에서 나타났고, 단순 판막 수술, 관상동맥 우회술, 대동맥 수술, 선천성 심기형의 수술후의 부정맥 발생률들은 각각 70.8%, 45.3%, 40.0%, 29.5% 이었다. 연령별 발생은 의미있는 차이를 보이지 않았으며 심정지액의 종류도 의미있는 차이는 보이지 않았다. 반면에 수술의 종류, 술전 부정맥의 유무, 체외순환 및 대동맥 차단시간, 그리고 술전 시행한 심초음파상의 좌심실 확장기말과 수축기말 내경, 좌심방의 내경 등은 부정맥의 발생률과 통계적으로 유의한 상관관계를 보여주었다 (p< 0.05). 결론 : 향후 질병, 수술방법 등이 균질화된 집단을 선정하여 전향적인 연구를 진행함으로써 개심술후 부정맥의 발생, 치료 및 예방에 관한 보다 정확한 결론에 접근할 수 있을 것으로 생각한다.

Keywords

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