Tuyển tập các báo cáo nghiên cứu khoa học quốc tế về bệnh thú y đề tài: Development and Evaluation of a New Apparatus for Continuous Perfusion of Isolated Perfused Pig Heart | J. Vet. Sci. 2002 3 3 219-232 JOURNAL OF Veterinary Science Development and Evaluation of a New Apparatus for Continuous Perfusion of Isolated Perfused Pig Heart .1 2 .1 3 Mi-Young An Emmanuelle P. Canel In-Ho Jang Didier Revel Theresa W. Fossum Nam-Sik Chung and Marc F. Janier1 Department of Small Animal Medicine and Surgery College of Veterinary Medicine Texas A M University 1CREAT1S at Lyon Cardiology Hospital Veterinary School at Kyungpook N. University 3Cardiovascular Center at Yonsei Hospital Received August 3 2002 Accepted September 9 2002 Abstract To develop a better model of isolated perfused heart a new apparatus of coronary artery cannula-fixed-in-aortic tube was developed for continuous normothermic perfusion and compared to the Casalis apparatus with cold ischemia. Eight mongrel pigs with the body weight of 18 to 24 kg were divided half into two groups. All the continuous perfusion experimental hearts resumed a spontaneous heart beat and stabilized earlier than the control hearts without the need of defibrillator or pacemaker indicating no reperfusion injury on the heart. All the experimental hearts did not show fibrillation nor stopped beating during the entire experiment whereas the control hearts fibrillated. Two control hearts stopped beating and only one of the two survived with the help of pacemaker. The coronary systolic diastolic and mean pressures were more stable with low variation in the experimental hearts than the cold ischemic control hearts. The experimental hearts consumed more oxygen than the control hearts indicating more cardiac output. According to these results the continuous normothermic perfusion method by the new cannula even though with a short-period of hypothermic perfusion provided better myocardial protection than the cold ischemia. Key words new coronary cannula-fixed-in-aortic tube continuous normothermic perfusion short-term hypothermic infusion cold ischemia isolated perfused heart myocardial protection Corresponding .
