Journal of Chest Surgery

The Korean Society for Thoracic and Cardiovascular Surgery (대한심장혈관흉부외과학회)
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Regression of Left Ventricular Hypertrophy after AVR in Aortic Valvular Stenosis

대동맥판막협착증 환자에서 판막치환 후 좌심실심근비후의 변화

  • 이재원 (울산대학교 서울중앙병원 흉부외과학교실) ;
  • 최강주 (울산대학교 서울중앙병원 흉부외과학교실) ;
  • 송명근 (울산대학교 서울중앙병원 흉부외과학교실)
  • Published : 1998.06.01
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Abstract

Background: The regression of the left ventricular hypertrophy after prosthetic valve replacement in patients with aortic valvular stenosis is an important factor to determine the appropriateness of the replaced prosthetic valvular size. Methods: To assess the regression of myocardial hypertrophy, a retrospective analysis of Doppler echocardiographic and electrocardiographic data was undertaken before, soon after(7.5$\pm$2.1 day), and late after(10.7$\pm$1.8 months) surgery in 36 patients(22 males, 14 female, mean age 54$\pm$12.1 years, mean BSA 1.61$\pm$0.15m2) with predominant aortic valvular stenosis. The patients underwent St. Jude Medical aortic valve replacement. By the size of the valves used, the patients were divided into three groups(19, 21 and 23+). Results: The mean body surface area(1.48$\pm$0.13) in the patients with the 19 mm valve was smaller than that in the other groups(1.63$\pm$0.12)(p<0.05). No significant changes of ejection fraction were detected in all groups over time. Left ventricular muscle mass index(gm/m2) was reduced significantly in the 21 and 23+ groups over time(p<0.05), but there were no significant changes in the 19 mm valve group. The electric voltage height on EKG at the period of late after surgery was reduced significantly in all groups(p<0.05). Conclusion: Despite clinical improvement, the LVH was not reduced significantly in 19 mm valve group. Thus we suggest that more attention and additional procedures such as annular enlargement should be taken in patients who will undergo the replacement of 19 mm prosthetic valve.

배 경: 대동맥판막협착증 환자에서 판막치환후 좌심실심근비후감소의 정도는 치환된 판막의 적절성을 고려하는 중요한 인자로 생각된다. 방 법: 1990년 7월부터 1997년 7월까지 서울중앙병원 흉부외과에서는 심근비후의 감소정도를 분석하기위해 St. Jude 판막을 치환한 대동맥판막협착증 환자 36명(남녀 각각 22명과 14명, 평균나이 54세, 평균체표면적 1.61m2)에서 수술전과 수술후 조기(7.5$\pm$2.1일)와 만기(10.7$\pm$1.8개월)에 심초음파와 심전도를 시행하였다. 사용된 판막에 따라 3개의 군(19, 21 그리고 23이상)으로 나누었다. 결 과: 19 mm 판막군에서의 평균 체표면적(1.48$\pm$0.13)은 타군(1.63$\pm$0.12)에 비해 체표면적이 작았다(p<0.05). 심박출량은 모든 군에서 수술전에 비해 수술만기에 차이가 없었다. 좌심실심근량지수는 21 mm와 23mm이상 판막군에서 수술후 만기에 유의하게 감소하였으나 19 mm 판막군은 유의한 감소를 보여주지 못했다. 심전도상 Scott의 기준에 의한 전위의 크기는 모든 크기의 판막에서 술후 만기에 감소되었다. 결 론: 19 mm 판막군에서는 임상증세의 호전에도 불구하고 좌심실심근비후의 감소가 원할하지 못해 대동맥판륜이 작은 환자에서는 판륜확장술 또는 동종이식판막치환과 같은 대책들이 필요할 것으로 사료된다.

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