흰쥐의 적출심장에서 Diltiazem과 Sevoflurane의 병용 투여가 관상동맥 혈류량과 심근 수축력에 미치는 영향Effects of Diltiazem with Sevoflurane on Coronary Flow and Myocardial Contractility in the Isolated Rat Heart
- Other Titles
- Effects of Diltiazem with Sevoflurane on Coronary Flow and Myocardial Contractility in the Isolated Rat Heart
- Authors
- 김희주; 남상선; 이미경
- Issue Date
- Nov-2001
- Publisher
- 대한마취과학회
- Keywords
- Anesthetics, volatile: Sevoflurane; Animal: rat; Heart, Isolated: contractility; coronary flow; Pharmacology: diltiazem
- Citation
- 대한마취과학회지, v.41, no.5, pp 589 - 598
- Pages
- 10
- Journal Title
- 대한마취과학회지
- Volume
- 41
- Number
- 5
- Start Page
- 589
- End Page
- 598
- URI
- https://scholarworks.korea.ac.kr/kumedicine/handle/2020.sw.kumedicine/22299
- DOI
- 10.4097/kjae.2001.41.5.589
- ISSN
- 2005-6419
2005-7563
- Abstract
- BACKGROUND
Calcium channel blockers and volatile anesthetics have depressant effects on myocardial contractility by limiting Ca2+ entry and altering intracellular Ca2+ release. The aim of this study was to compare the direct cardiac effects of isoflurane, desflurane and new volatile anesthetics, sevoflurane, in combination with diltiazem on the isolated rat heart.
METHODS
Sprague-Dawley rat hearts (N = 60) were isolated and perfused with oxygenated modified Krebs solution at 55 mmHg with 0.5, 1, 2 MAC of isoflurane, desflurane or sevoflurane in combination with diltiazem 42 ng/ml (group 1) and 84 ng/ml (group 2). Isovolumetric left ventricular pressure (LVP), rate of change ventricular pressure (dP/dt), heart rate and coronary flow were measured. To examine the indirect metabolic effect due to autoregulation of coronary flow, O2 delivery (DO2), myocardial O2 consumption (MVO2) and percent O2 extraction (POE) were also monitored.
RESULTS
Diltiazem plus volatile anesthetics depressed LVP and dP/dt and increased coronary flow dose-dependently. They also decreased heart rate. In the group 2, at 2 MAC of inhaled anesthetics heart rate was significantly decreased than group 1. There were no statistical significance between isoflurane, desflurane and sevoflurane on myocardial contractility and myocardial oxygenation.
CONCLUSIONS
These in vitro RESULTS demonstrate that clinical dose of diltiazem plus isoflurane, desflurane or sevoflurane has similar effects on myocardial contractility and coronary flow.
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Collections - 2. Clinical Science > Department of Anesthesiology and Pain Medicine > 1. Journal Articles
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