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조직판막의 실패와 석회화에 관한 연구

Authors
 홍유선 
Issue Date
1989
Description
의학과/석사
Abstract
[영문]

[한글]

이종조직 판막은 Carpentier 등(1968)이 glutaraldehyde 률 전저지로 사용함으로써 많

은 발전을 가져왔으려, Reis 등 (1971)이 조직판막의 긴장을 줄이기 위하어 유연성 stent

틀 사용함으로서 조직판막수명의 연장이 가능하게 되었다.

그러나 이러한 조직판막 역시 한정된 수명을 지니고 있어 점차 금속판막으로 대치되고

있다.

본 언구는 이러한 조직판막 부전와 원인인 판막의 칼슘침착에 대하여 연구하고자 제거

한 조직판막을 병리 생태학적으로 조사하며, 또한 환자의 상대와 비교하고 그들간의 상관

관계를 관찰하여 앞으로 조직판막의 선택에 도움이 되고자 본 연구에 착수하었다.

연구 대상 : 1982년 3월 1일 부터 1988년 6월 30일 까지 연세의료원 흉부외과에서 조직

판막부전으로 재수술을 시행한 환자 45명을 대상으로 하였다. 대상환자의 연령분포는 10

세어서 65세로 평균 30.3세었고 성별 분포는 남자 17명, 여자 28명 이었다.

이들 45명의 환자 중 8예어서는 대동맥 판막과 승모판판막을 모두 재치환하여 모두 53

개의 절제된 판막을 연구대상으로 하였다.

연구 방법 : 칼슘침착과 위치는 절제된 판막을 X-선 촬영하였으며 1982넌 Cipriano등의

분류법에 의하여 Grade 0에서 Grade 4+로 석회화정도를 나누었으며, 위치 또안 base, bo

dy, free edge, commissural attachment로 분류하였다.

파열과 천공은 모든 판막을 육안적으로 조사하여 1981년 Ishihara등이 분류한 4가지 형

태로 정하였다.

석회화 정도와 나이와의 관계에서 33세 이하에서는 33세 이상보다 의의 있게 석회화 정

도가 심하였고 (p<0.045), 또한 남자에서 여자보다 석회화 정도가 심하였다 (p<0.002).

판막의 종류에 따라서는 lonescu-Shiley 판막이 Hancock 판막보다 석회화가 심하었다 (

p<0.035).

석회화 위치는 48예(86%)가 교련부위었으며, 파열과 천공은 type Ⅰ이 많으며 대부분

석회화와 연관되어 일어났다.

그러나 판막의 위치, 삽입기간, 심방세동, 항응고제 사용유무등과는 통계학적으로 유의

한 차이를 보이지 않았다 (p>0.05).





The Relation of the Bioprosthetic Valve Failure to its Calcification



Yoo Sun Hong

Department of Medical Science The Graduate School Yonsei University

(Directed by Sung Nok Hong, M.D.)



In 1968, Carpentier and hits associates introduced glutaraldehyde as a compound

for preparing cardiac tissue valve, and this technique has provided a considerably

more suitable and durable tissue valve substitute.

To increase further durability of valve tissue, Reis and his colleagues designed

a flexible stent to reduce the stress on the heterogenous tissue valve mounted.

However with the advent of more innovative mechanical valve currently, many

bioprosthetic valves are being substituted by mechanical valves at our department

of cardiothoracic surgery because of bioprosthetic valve failure.

Main cause of bioprosthetic valves failure were calcification or/and tear of

tissue valves.

The purpose of this retrospective study is to clarify the relationship between

the patients' clinical profile during implantation of tissue valves and pathologic

features of the failed bioprosthetic valve.

From March, 1982 through June, 1988, 53 bioprosthetic heart valves that had been

explanted from 45 patients at the department of cardiac surgery of Yonsei

University Hospital were subjected to this study.

The patients were 10 to 65 year-old (mean age : 30.3 yr) with 17 males and 28

females, Re-replacements of prosthetic valves were carried out twenty nine in

mitral poaition, eight in aortic position and eight in both aortic and mitral

position simultaneously.

The grading and location for calcification of valved were verified by radiograms.

The calcification of the explanted valves leaflets was graded from 0 to 4 plus

according to Cipriano and associates' method. The types of tear and perforation of

leaflet were classified into four types as Ishihara has adopted initially in 1981.

In yonger age group under thirty three years, explanted tissue valves were

significantly more affected in terms of grades of sererity of valve calcification

as compared with older age group (p<0.035).

Valve calcification appeared more severe in male as compared to female (p<0.002).

Ionescu-Shirley bovine pericardial bioprosthetic valves showed more severe

calcification than Hancock porcine tissue valves (p<0.035).

Calcinm deposit was found very prevalent at the area of commissural attachment

(86% of all),

Type I of valve rupture was shown to be related with simultaneous calcification.

However, the relation of explanted valve position, duration of implanted

prosthetic valve, atrial fibrillation and anticoagulant therapy to the severity of

bioprosthetic valve calcification were not significantly clear statistically

(p>0.05).
Full Text
https://ymlib.yonsei.ac.kr/catalog/search/book-detail/?cid=CAT000000046029
Files in This Item:
제한공개 원문입니다.
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Thoracic and Cardiovascular Surgery (흉부외과학교실) > 2. Thesis
Yonsei Authors
Hong, You Sun(홍유선)
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/135534
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