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규정압력(Nominal Pressure)에 의한 관동맥 스텐트의 확장 정도: 혈관내 초음파에 의한 연구

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Author(s)
김기영허승호조용원
Keimyung Author(s)
Hur, Seung HoCho, Yong Won
Department
Dept. of Internal Medicine (내과학)
Dept. of Neurology (신경과학)
Journal Title
순환기
Issued Date
2002
Volume
32
Issue
8
Keyword
UltrasonographyinterventionalCoronary disease
Abstract
Intravascular ultrasound (IVUS),
following stent implantation, demonstrated a significant degree of underexpansion, despite the initial appearance of an angiographically successful deployment, in first-generation stents. With improvements in stent designs and delivery systems, the current-generation of stents appear to achieve optimal stent expansion. The purpose of this study was to evaluate optimal stent expansion, by nominal pressure balloon inflation, in the current generation of stents. Subjects and Methods: We evaluated 30 patients having had Nir-Sox, Tristar, S670 or Bx Velocity stents successfully deployed at nominal pressure (7-10 atm) with delivery balloon system, between March and September 2001, using IVUS. IVUS criterion for optimal stent expansion was defined as a minimal stent area (MSA) ratio of ≥0.8 of the average reference lumen area. Results:The mean nominal balloon pressure was 8.87±0.9 atmospheres and the mean stent size was 3.38±0.45 mm. In reference segments, the minimal lumen diameter and average lumen area, found from the IVUS, were 3.18±0.51 mm and 8.88±2.92 mm2 , respectively. In stented segments, the minimal stent diameter and MSA were 2.55±0.46 mm and 6.10±2.08 mm2 , respectively. In only 11 of the 30 patients (36.7%) was the optimal stent expansion, by IVUS, achieved. Conclusion:Despite the development of a balloon delivery system for the current generation of stents, 63.3% of our study patients did not achieve optimal stent expansion, by IVUS, following nominal balloon inflation. Therefore, additional procedure will be required for optimal stent expansion in the current generation of stents.
Alternative Title
Optimal Stent Expansion by Nominal Pressure Balloon Inflation: an Intravascular Ultrasound Study
Keimyung Author(s)(Kor)
허승호
조용원
Publisher
School of Medicine
Citation
김기영 et al. (2002). 규정압력(Nominal Pressure)에 의한 관동맥 스텐트의 확장 정도: 혈관내 초음파에 의한 연구. 순환기, 32(8), 666–673.
Type
Article
ISSN
1225-164X
URI
https://kumel.medlib.dsmc.or.kr/handle/2015.oak/36751
Appears in Collections:
1. School of Medicine (의과대학) > Dept. of Internal Medicine (내과학)
1. School of Medicine (의과대학) > Dept. of Neurology (신경과학)
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