Abstract | OBJECTIVE: DESIGN: Prospective study. SETTING: Laboratory. SUBJECTS: Thirty-three beagle dogs. INTERVENTION: MEASUREMENTS AND MAIN RESULTS: In vitro interferences of PHP and stroma-free hemoglobin with liver function tests were determined and recommendations for interpretation of results from blood samples containing PHP and stroma-free hemoglobin were made. Blood was collected before, during, and after resuscitation from hemorrhagic shock. The dogs were then awakened and survivors were monitored daily with blood sampling until they were killed and necropsy was performed. After 7 days, the survival rate following hemorrhagic shock was 100% for whole blood and 4% PHP, 86% for stroma-free hemoglobin, and 33% for 8% PHP. Of the resuscitated dogs not surviving 7 days, all but one died within 27 hrs from coagulopathy. All dogs not resuscitated died within 1.75 hrs after 2 hrs of shock. Bilirubin, alkaline phosphatase, and lactic dehydrogenase concentrations could not be measured due to interferences of stroma-free hemoglobin and PHP. Aspartate (AST) and alanine (ALT) aminotransferase concentrations could be measured after dilution to overcome the interferences. Significant increases in AST and ALT values in all groups 24 hrs after resuscitation were attributed to hypoxic hepatocellular damage associated with the severity of the shock model rather than to the resuscitation fluid. Liver histology showed no changes attributed to toxic damage of hepatocytes in dogs resuscitated with stroma-free hemoglobin or PHP. However, changes, were less severe in dogs resuscitated with 4% PHP than in other groups. CONCLUSION: Morphologic studies at necropsy and liver function tests in dogs receiving hemoglobin solutions, compared with autologous blood, support the conclusion that the PHP and stroma-free hemoglobin solutions tested did not produce hepatic toxicity when used as resuscitation fluids in this model of severe shock.
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Authors | J Eldridge, R Russell, R Christenson, R Sakamoto, J Williams, M Parr, B Trump, P Delaney, C F Mackenzie |
Journal | Critical care medicine
(Crit Care Med)
Vol. 24
Issue 4
Pg. 663-71
(Apr 1996)
ISSN: 0090-3493 [Print] United States |
PMID | 8612420
(Publication Type: Comparative Study, Journal Article, Research Support, Non-U.S. Gov't)
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Chemical References |
- Blood Substitutes
- Hemoglobins
- Solutions
- pyridoxalated-hemoglobin-polyethylene glycol conjugate
- Polyethylene Glycols
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Topics |
- Acute Disease
- Animals
- Blood Substitutes
(administration & dosage, toxicity)
- Blood Transfusion, Autologous
(methods)
- Disease Models, Animal
- Dogs
- Drug Evaluation, Preclinical
- Hemoglobins
(administration & dosage, toxicity)
- Liver
(pathology, physiopathology)
- Polyethylene Glycols
(administration & dosage, toxicity)
- Prospective Studies
- Resuscitation
(methods)
- Shock, Hemorrhagic
(mortality, pathology, physiopathology, therapy)
- Solutions
- Time Factors
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