TY - JOUR
T1 - Perfusion Preservation versus Static Preservation for Cardiac Transplantation
T2 - Effects on Myocardial Function and Metabolism
AU - Rosenbaum, David H.
AU - Peltz, Matthias
AU - DiMaio, J. Michael
AU - Meyer, Dan M
AU - Wait, Michael A
AU - Merritt, Matthew E.
AU - Ring, W Steves
AU - Jessen, Michael E
N1 - Funding Information:
This study was supported by a grant from the Texas Advanced Technology Program (010019-0108-2003) and by a grant from Organ Transport Systems Inc, Frisco, Texas.
Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2008/1
Y1 - 2008/1
N2 - Introduction: Continuous perfusion of donor hearts for transplantation has received increasing interest, but the effects on cellular metabolism, myocyte necrosis, and myocardial edema are not well defined. Methods: Pig hearts were instrumented with sonomicrometry crystals and left ventricular catheters. Left ventricular function was quantified by the pre-load-recruitable stroke work (PRSW) relationship. Hearts were arrested with Celsior solution with 5.5mM 13C-glucose added, and removed and stored in cold solution (n = 4) or placed in a device providing continuous perfusion of this solution at 10 ml/100 g/min (n = 4). After 4 hours of storage, left atrial samples were frozen, extracted, and analyzed by magnetic resonance spectroscopy. Hearts were then transplanted into recipient pigs and reperfused for 6 hours, with function measured hourly. At the end of the experiment, left ventricular water content and serum creatine kinase-MB isoenzyme levels were measured. Results: Baseline left ventricular function was similar in both groups. During reperfusion, the volume-axis intercept of the PRSW relationship was significantly lower in hearts stored with continuous perfusion (p < 0.05), suggesting reduced contractile impairment. Magnetic resonance spectroscopy revealed a decrease in tissue lactate in hearts that received continuous perfusion. Serum creatine kinase-MB isoenzyme levels were higher hearts that had static storage (30.8 ± 9.0 vs 13.2 ± 2.7 ng/ml; p < 0.05). Left ventricular water content was similar in both groups (0.797 ± 0.012 vs 0.796 ± 0.014; p = 0.45). Conclusions: Donor hearts sustain less functional impairment after storage with continuous perfusion. This technique reduces tissue lactate accumulation and myocardial necrosis without increasing myocardial edema and appears promising as a method to improve results of cardiac transplantation.
AB - Introduction: Continuous perfusion of donor hearts for transplantation has received increasing interest, but the effects on cellular metabolism, myocyte necrosis, and myocardial edema are not well defined. Methods: Pig hearts were instrumented with sonomicrometry crystals and left ventricular catheters. Left ventricular function was quantified by the pre-load-recruitable stroke work (PRSW) relationship. Hearts were arrested with Celsior solution with 5.5mM 13C-glucose added, and removed and stored in cold solution (n = 4) or placed in a device providing continuous perfusion of this solution at 10 ml/100 g/min (n = 4). After 4 hours of storage, left atrial samples were frozen, extracted, and analyzed by magnetic resonance spectroscopy. Hearts were then transplanted into recipient pigs and reperfused for 6 hours, with function measured hourly. At the end of the experiment, left ventricular water content and serum creatine kinase-MB isoenzyme levels were measured. Results: Baseline left ventricular function was similar in both groups. During reperfusion, the volume-axis intercept of the PRSW relationship was significantly lower in hearts stored with continuous perfusion (p < 0.05), suggesting reduced contractile impairment. Magnetic resonance spectroscopy revealed a decrease in tissue lactate in hearts that received continuous perfusion. Serum creatine kinase-MB isoenzyme levels were higher hearts that had static storage (30.8 ± 9.0 vs 13.2 ± 2.7 ng/ml; p < 0.05). Left ventricular water content was similar in both groups (0.797 ± 0.012 vs 0.796 ± 0.014; p = 0.45). Conclusions: Donor hearts sustain less functional impairment after storage with continuous perfusion. This technique reduces tissue lactate accumulation and myocardial necrosis without increasing myocardial edema and appears promising as a method to improve results of cardiac transplantation.
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U2 - 10.1016/j.healun.2007.10.006
DO - 10.1016/j.healun.2007.10.006
M3 - Article
C2 - 18187093
AN - SCOPUS:37549067372
SN - 1053-2498
VL - 27
SP - 93
EP - 99
JO - Journal of Heart and Lung Transplantation
JF - Journal of Heart and Lung Transplantation
IS - 1
ER -