Journal of Chest Surgery
- Volume 25 Issue 1
- /
- Pages.1-16
- /
- 1992
- /
- 2765-1606(pISSN)
- /
- 2765-1614(eISSN)
The Local Myocardial Perfusion Rates of Right Atrial Cardioplegia in Hearts with Coronary Arterial Obstruction
관상동맥 협착을 동반한 심장에서 심근보호액 우심방 관류법의 심근 국소관류량
- Lee, Jae-Won (College of Medicine, Seoul Natinal University) ;
- Seo, Gyeong-Pil
- Published : 1992.01.01
Abstract
The quantitatively measured local myocardial perfusion rates with microspheres are used as an objective indicator of even distribution of cardioplegic solution, and the efficacy of the retrograde right atrial route of cardioplegia is evaluated in hearts with various levels of coronary arterial obstruction. After initial antegrade cardioplegia under the median sternotomy and aortic cannulation, 60 hearts from anesthetized New Zealand white rabbits are divided in random order as normal group [ligated left main coronary artery ; MA, MR] and diagonal group [ligated proximal diagonal artery ; LA, LR]. Half of each group [N=10] are perfused with antegrade cardioplegia[A] under the pressure of 100 cmH2O and the other half with retrograde right atrial route[R] under the pressure of 60 cmH2O[St. Thomas cardioplegic solution mixed with measured amount of microspheres]. The myocardium is subdivided into segments as A[atria], RV[right ventricle]. S[septum], LV[normally perfused left ventricular free wall], ROI[ischemic myocardium of left ventricular free wall]. LV and RQI are further divided into N[subendocardium] and P[subepicardium]. The resulting local myocardial perfusion rates and N /P of each group are compared with Wilcoxon rank sum test. The weight of the hearts is 5.94
Keywords
- myocardial protection;
- local myocardial perfusion rate;
- right atrial cardioplegia;
- microspheres;
- coronary arterial disease