title: Development and evaluation of a new apparatus for continuous perfusion of isolated perfused pig heart.
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.
authors.affiliation: Department of Small Animal Medicine and Surgery, College of Veterinary Medicine, Texas A&M University, College Station 77843-4474, USA. man@cvm.tamu.edu
authors.forename: Mi-Young
authors.initials: MY
authors.lastname: An
authors.forename: Emmanuelle P
authors.initials: EP
authors.lastname: Canel
authors.forename: In-Ho
authors.initials: IH
authors.lastname: Jang
authors.forename: Didier
authors.initials: D
authors.lastname: Revel
authors.forename: Theresa W
authors.initials: TW
authors.lastname: Fossum
authors.forename: Nam-Sik
authors.initials: NS
authors.lastname: Chung
authors.forename: Marc F
authors.initials: MF
authors.lastname: Janier
mesh_terms: D000818:Animals; D001784:Blood Gas Analysis / Q000662:veterinary; D001794:Blood Pressure; D002314:Cardioplegic Solutions / Q000627:therapeutic use; D002404:Catheterization / Q000379:methods* / Q000662:veterinary; D006321:Heart / Q000502:physiology*; D006339:Heart Rate; D066298:In Vitro Techniques; D010477:Perfusion / Q000379:methods* / Q000662:veterinary; D013552:Swine / Q000502:physiology* / Q000601:surgery
chemical_list: D002314:Cardioplegic Solutions