Document Detail


Orthotopic transplantation of the baboon heart after 20 to 24 hours' preservation by continuous hypothermic perfusion with an oxygenated hyperosmolar solution.
MedLine Citation:
PMID:  7033670     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Baboon hearts were rapidly excised after being flushed with 500 ml of cardioplegic solution at 4 degrees C and then immersed in cold 4 degrees C saline or cardioplegic solution for 2 minutes. The hearts were then perfused at 8 to 10 cm H2O pressure for 20 to 24 hours under refrigeration with a hyperosmolar clear fluid maintain perfusate at 6 to 8 degrees C, through which 95% oxygen and 5% carbon dioxide were continually bubbled to maintain the perfusate pH between 7.2 and 7.4. Myocardial temperature remained at approximately 6 to 8 degrees C. The hearts were then orthotopically transplanted into recipient baboons matched for size and AB blood group. Two groups (A and B) were studied, differing significantly only with respect to the constitution of the cardioplegic solution and perfusate used. The cardioplegic agent used in Group B contained a higher concentration of magnesium than that used in Group A and included the calcium antagonist verapamil. Perfusate B had higher osmolality than perfusate A, largely due to the inclusion of sucrose. A preliminary group of 10 baboons in Group A received no immunosuppression. Five of the remaining six immunosuppressed baboons in this group survived more than 48 hours to rejection or until killed at 2 to 29 days. All six of the baboons in Group B survived to rejection between 6 and 33 days, with mean survival 19.5 days. Cardiac catheterization was performed in six surviving baboons (Group A, four; Group B, two) between postoperative days 6 and 10 and showed good hemodynamic function. Histologic examination of hearts after death has shown only minor ischemic changes in those hearts which functioned well.
Authors:
W Wicomb; D K Cooper; J Hassoulas; A G Rose; C N Barnard
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The Journal of thoracic and cardiovascular surgery     Volume:  83     ISSN:  0022-5223     ISO Abbreviation:  J. Thorac. Cardiovasc. Surg.     Publication Date:  1982 Jan 
Date Detail:
Created Date:  1982-03-26     Completed Date:  1982-03-26     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0376343     Medline TA:  J Thorac Cardiovasc Surg     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  133-40     Citation Subset:  AIM; IM    
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MeSH Terms
Descriptor/Qualifier:
Animals
Coronary Circulation
Heart / anatomy & histology
Heart Arrest, Induced / methods
Heart Transplantation*
Myocardium / metabolism
Organ Preservation / methods*
Organ Size
Osmolar Concentration
Oxygen Consumption
Papio
Temperature
Tissue Preservation / methods*
Vascular Resistance

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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