• Journal of Chest Surgery
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• 제24권2호
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• pp.161-170
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• 1991

Clinical results with the Mechanical cardiac valves were reviewed for 261 patients who underwent cardiac valve replacement from September, 1985 to July, 1990. of the Mechanical valves used, 156 were Carbomedics, 109 Duromedics, 52 St. Jude and 11 Bjork-Shiley. Overall hospital mortality was 14 out of 261[5,36%]: 9 out of 159[5.66%] for MVR, 1 out of 35[2.86%] for AVR and 4 out of 67[5.96%] for DVR[AVR+MVR]. Two hundred and forty seven operative survivors were followed up for a total 466.8 patient-years, ranged from 1 month to 4.9 years [a mean 1.8 years] and the follow up was 96.0%. There were 12 valve-related complications: three from thromboembolism, three from valve thrombosis, three from prosthetic valve endocarditis, two from paravalvular leak and the other one from hemorrhage. Actuarial rate free from all valve-related complication at 4.9 years was 96$\pm$1.3%. There were 11 late deaths: two from thromboembolism, one from valve thrombosis, one from prosthetic valve endocarditis, one from hemorrhage and the others 6 from non-valve-related complications. Actuarial survival rate at 4.9 years was 94$\pm$2.0%. 96$\pm$3.0% for MVR, 94$\pm$4.2% for AVR and 91$\pm$3.7% for DVR[AVR+MVR]. And there are 7 reoperations: three from paraprosthetic leak, two from prosthetic valve endocarditis and two from valve thrombosis. Actuarial rate free from reoperation at 9 years was 96$\pm$2.9%. On the basis of this 4.9 years of experience, the pyrolytic carbon mechanical valves appears to be an excellent mechanical prosthesis for cardiac valve replacement, in terms of hemodynamic performance, low mortality and low thrombogenecity.

• Journal of Chest Surgery
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• 제21권4호
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• pp.727-733
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• 1988

Two cases of the discrete membranous subaortic stenosis were experienced at the Department of Thoracic & Cardiovascular Surgery, National Medical Center, Seoul, Korea. Case I was 31 years old male with a history of aortic valve replacement[Ionescu-Shiley, 19mm] at the other hospital in 1980. Heart failure was noticed 6 years later. On cardiac catheterization, pressure gradient between left ventricle 4 aorta was 104 mmHg, but subvalvular aortic stenosis was not detected by preoperative 2-D echo <% left ventriculogram. Above case revealed stenoinsufficiency of the prosthetic valve. Under the diagnosis of the prosthetic valve failure, re-do aortic valve replacement[Bjork-Shiley, 23 mm] was done. During operation, the discrete membranous subaortic stenosis was incidentally found, and it was completely resected. So we thought that above discrete membranous subaortic stenosis was not detected at first operation, and it was progressed during 6 years, and accelerated the degeneration of the prosthetic valve. Case II was 20 years old female. Her complaints were exertional dyspnea, angina, syncope, which were aggravated since 5 years ago. 2-D echo <% left ventriculogram revealed the discrete membranous subaortic stenosis. Pressure gradient was 20 mmHg, but her symptoms were serious. Associated cardiac anomaly was the persistent left superior vena cava without connection with right superior vena cava. Complete excision of the membranous tissue was done. Post-operative pressure gradient between left ventricle & aorta was absent, and her complaints were nearly subsided. Both cases were type I according to the Newfeld classification of the discrete subvalvular aortic stenosis, and complete excision of the membranous tissue was done without myotomy or mymectomy. And short-term follow-up results[Case I:2 years, Case II: 1 ~ years] were good except soft systolic murmur[grade II/VI] at the aortic area in both cases.

• Journal of Chest Surgery
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• 제31권6호
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• pp.586-590
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• 1998

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.

• Journal of Chest Surgery
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• 제31권3호
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• pp.242-246
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• 1998

1989년 1월부터 1995년 12월까지 27예에서 심장판막 재치환술을 시행하였다. 남자 11예, 여자 16예로 평균연령은 43.51+12.2세 이었다. 기왕의 판막치환은 12예가 조직판막이었고 15예가 기계판막이었다. 인공심장판막이 재치환수술까지 체내에 있었던 기간은 조직판막이 104.91+34.9개월, 기계판막이 55.21+43.7개월이었다. 재치환된 판막은 승모판막 17예, 대동맥판 8예, 삼첨판 1예 그리고 1예는 Cabrol수술을 다시 시행한 경우이다. 재치환의 원인은 조직판막에서 판막의 구조적 결함이 전 예에서 관찰되었으며 그 외에 판막주위누출 2예와 심내막염 1예가 이었다. 기계판막에서는 판막주위조직의 침윤이 8예, 판막주위누출 4예, 판막혈전 3예가 있었으며 판막주위누출 4예중 1예는 Cabrol수술후 인조혈관의 파열이 동반되었다. 술후 합병증(25.9%)으론 창상감염 3예, 미추부 피부괴저 1예, 저심박출증 1예, 심방조동 1예 그리고 방실차단 1예 이었다. 술후 조기사망은 1명이 저심박출증으로 사망하였고 평균 49.5개월간의 추적관찰중 1명이 확장성 심근증으로 수술 3년후에 사망하였다.

• Journal of Chest Surgery
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• 제32권3호
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• pp.262-269
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• 1999

배경: 약 11년 동안의 대동맥판막치환술에 대한 중.장기임상성적을 알아보기 위해 대동맥판막 치환술을 시행하였던 환자들을 추적관찰하였다. 대상 및 방법: 1986년 2월부터 1997년 5월까지 134례의 대동맥판막치환술이 시행되었다. 남자가 71명, 여자가 63명이었고 평균 연령은 38.9세였으며 최저 17세에서 최고 70세의 연령범위를 보였다. 결과: 동반된 수술은 승모판치환술(62례), 승모판치환술과 삼첨판성형술(14례), 대동맥륜확대술(16례), Cabrol 술식(10례) 등이었다. 119개의 기계판막과 15개의 조직판막이 치환되었으며 21 mm 이하의 작은 판막이 68례에서 치환되었다. 술후 조기 합병증은 35례에서 발생하였는데 이 중 울혈성심부전 9례, 저심박출증 6례, 술후 출혈 5례, 흉막 삼출액 5례 등의 발생빈도를 보였다. 조기사망은 13례(9.7%)에서 발생하였으며 그 원인은 저심박출증(5례), 울혈성 심부전(2례), 범발성 혈관내 응고장애(2례) 등이었다. 총 추적기간 누계는 452.7 환자-년이었으며 평균 추적기간은 3.4$\pm$3.1 년/환자였다. 판막과 유관한 장기합병증은 9례에서 발생하였는데 항응혈제관련 출혈 4례, 심내막염 2례, 혈색전증 2례, 판막파괴 1례 등이 있었다. 추적기간 중 심장과 유관한 후기 사망은 5례(1.1%/환자-년)에서 발생하였으며 이 중 항응혈제관련 출혈이 2례, 심부전이 2례, 심내막염이 1례였다. 결론: Kaplan-Meier 방법에 의한 11년 보험 통계적 생존률은 91.0$\pm$4.3%였다.

• 대한골관절종양학회지
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• 제17권1호
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• pp.44-50
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• 2011

목적: 근위 대퇴골에 발생한 전이성 골종양의 병적 골절 혹은 임박 골절의 수술적 치료방법 중 광범위 절제술 후 종양대치 인공관절 치환술과 골절의 정복 후 골수강정을 이용한 고정술의 치료 성적을 비교하는데 있다. 대상 및 방법: 1994년 5월에서 2009년 5월까지 근위 대퇴골 전이성 골종양으로 인한 임박골절 및 병적골절로 본원에서 수술한 37명(38예))을 종양대치 인공관절 치환술을 시행한 군(1군; 22명)과 골유합 고정술을 시행한 군(2군; 15명, 16예)으로 나누었다. 평균 연령은 1군은 59세, 2군은 60세였으며, 평균 추시 기간은 수술 후 1군은 23개월, 2군은 11개월이었다. 두 수술군의 치료성적은 종양학적 성적과 Musculoskeletal Tumor Society (MSTS) scoring system, 1993의 기능적 평가방법, Kaplan-Meier 생존분석을 시행하였으며, 통계학적 분석은 Log rank test, T-test를 이용하여 평가하였다. 결과: 수술 후 평균 생존기간은 1군은 24개월(3-110개월), 2군은 11개월(1-33개월)이었으며, 1년 생존율은 1군은 86% (19/22명), 2군은 50% (8/16명), 2년 생존율은 1군은 30% (5/22명), 2군은 9% (1/16명)였다. MSTS scoring system, 1993의 기능적 평가방법을 이용한 종합적인 성적에서 1군은 평균 26점(19-30점), 88%, 2군은 평균 15점(10-23점), 51%로 평가되었다. 결론: 근위 대퇴골에 발생한 전이성 골종양의 치료 방법 중 선택된 환자에서 실시한 광범위 절제술 후 종양대치 인공관절 치환술은 골절 고정술 보다 종양학적 성적 및 기능적 성적이 우수한 것으로 나타났다.

• Journal of Chest Surgery
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• 제17권4호
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• pp.672-677
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• 1984

Thromboembolism is a major cause of morbidity and death following implantation of cardiac prosthetic devices. Effective systemic anticoagulation is very important. The presence of thrombus can often be detected by pulmonary edema associated with the disappearance of valve clicks. 2-D echocardiography and phonocardiography are also valuable tools. The most common treatment is reoperation and replacement after discovery early. We have experienced one death of fatal thromboembolism after St. Jude valve replacement was done in 48 years old male diagnosed of severe mitral stenosis. He was treated with warfarin, aspirin, ticlopidine for 10 weeks but died suddenly. At autopsy, valve dysfunction was seen due to organic thrombus arising from atrial septum and confirmed with microscopic findings.

• Journal of Chest Surgery
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• 제10권1호
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• pp.156-163
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• 1977

This is a report of a case in which mitral valve replacement was performed using Starr-Edwards ball valve [model 6230] by total cardiopulmonary bypass with total hemodilution prime and moderate hypothermia. The patient was 21 year old girl, and mitral valvular symptoms occurred 5 years ago. According to clinical features of the disease, the patient was classified as the class IV of N.Y.H. A. cla3sification. The preoperative diagnosis of mitral insufficiency was made mainly by left ventriculography of roentgenologic study. The mitral valve was highly deformed due to scar contraction of valve leaflets and shortening of chordae tendineae. After prosthetic valve replacement, no abnormal hemodynamic signs were observed. The postoperative course was uneventful.

• Journal of Chest Surgery
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• 제48권4호
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• pp.272-276
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• 2015

Loeys-Dietz syndrome (LDS) is an autosomal dominant connective tissue disorder that is characterized by aggressive arterial and aortic disease, often involving the formation of aortic aneurysms. We describe the cases of two children with LDS who were diagnosed with aortic root aneurysms and successfully treated by valve-sparing aortic root replacement (VSRR) with a Valsalva graft. VSRR is a safe and suitable operation for children that avoids prosthetic valve replacement.

• Journal of Chest Surgery
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• 제27권2호
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• pp.114-121
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• 1994

St. Jude Medical cardiac valve replacement was performed in 135 consecutive patients from Aug.1986 to Dec. 1991.72 had mitral, 28 had aortic, 1 had tricuspid and 34 had double valve replacement. The hospital mortality rate was 4.4% & the late mortality rate was 3.7 %. Follow-up was done on 115 surviving patients:mean follow-up period was 29.78 $\pm$ 18.32 months. Paravalvular leakage was observed in two patients, possible prosthetic valvular endocarditis wasobserved in one patient and other specific valve-related complications were none. The overall actuarial survival rate at 6 years were 91.6% in total, 96.4% in aortic, 95.5 % in mitral and 81.9 % in double valve replacement.We concluded, therefore that good clinical results and a low complication rate could be achieved with St. Jude Medical valve in short-term follow-up & long-term follow-up was also necessary.