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Indexed/Abstracted in: BIOSIS Previews, Current Contents/Clinical Medicine, EMBASE, PubMed/MEDLINE, Science Citation Index Expanded (SciSearch), Scopus
Impact Factor 1,632
Online ISSN 1827-191X
Ogiwara H., Ichikawa H., Takahashi T., Ohtaki A., Ishikawa S., Morishita Y.
From the Second Department of Surgery Gunma University School of Medicine Maebashi, Gunma, Japan
Background. We compared two different solutions, the University of Wisconsin (UW) solution (intracellular-like) and the modified Kawakami (mK) solution (extracellular-like), for initial flush of coronary vascular beds before simple storage and following coronary perfusion.
Methods. After a right thoracotomy in the 4th intercostal space, the donor heart was isolated by ligating the azygos vein and venae cavae, and cross-clamping the aorta. Cardiac arrest was then obtained with a cold GIK solution. Following initial flush of coronary vascular beds, the donor heart was resected, stored utilizing a combination of simple immersion and coronary perfusion, and then transplanted. A total of 48 mongrel dogs was divided into three groups each using different solutions for the initial flush of coronary vascular beds and for coronary perfusion. In group I (n=10) the UW solution was used for both initial flush and coronary perfusion. In group II (n=7) the mK solution was used for both initial flush and coronary perfusion, and in group III (n=7) the UW solution was used for initial flush and the mK solution for coronary perfusion.
Intracellular high-energy phosphate was surveyed by 31P-nuclear magnetic resonance spectroscopy.
Results. After 12-hour simple immersion and 1-hour coronary perfusion, phosphocreatine and adenosine triphosphate were significantly (p<0.05) higher in group III than in groups I and II. The high-energy phosphate levels of the graft tissue were better in groups I and III than in group II. Orthotopic transplantation was then performed using 10 preserved grafts in group I and seven preserved grafts of group III. After transplantation, left ventricular (LV) pressure of group I animals recovered to 82.3% and group III recovered to 95.8% of the control values. LV dp/dt of group I and III animals recovered to 76.5% and 96.7% of the control values, respectively.
Conclusions. The UW solution, which is acceptable for both initial flush and simple storage, is not suitable for continuous coronary perfusion even for a short period due to its high viscosity. A combination of the UW solution both for initial flush and the following cold simple immersion and the mK solution for continuous coronary perfusion is appropriate for long-term preservation of the canine heart.