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European Journal of Cardio-Thoracic Surgery, Vol 6, 649-654, Copyright © 1992 by European Association for Cardio-thoracic Surgery

ARTICLES

Acute effects of massive transfusion of a bovine hemoglobin blood substitute in a canine model of hemorrhagic shock

W Harringer, GT Hodakowski, T Svizzero, EE Jacobs Jr and GJ Vlahakes
Department of Surgery, Massachusetts General Hospital, Boston 02114.

The capability of stroma-free hemoglobin solutions to act as a plasma expander with oxygen and carbon dioxide transport properties has encouraged the idea of their possible use in settings of massive blood loss. Using a canine hemorrhagic shock model (systolic arterial pressure < or = 50 torr for 60 min), we evaluated the efficacy of an ultra-pure stroma-free bovine hemoglobin solution (PBHg) as a resuscitation fluid in hypovolemic and acidotic animals, using homologous blood (PRBC) and 10% human serum albumin (HSA) as control solutions. Following volume replacement, dogs were studied for 2 h under anesthesia and for 4 h subsequently while awake. Resuscitation with PBHg (30 +/- 3 ml/kg) was able to restore stable hemodynamics and correct acidosis to an extent comparable to that in animals treated with PRBC. Additionally, oxygen transport was maintained at a higher level than that in dogs treated with HSA. Administration of PBHg in this shock model revealed no significant cardiopulmonary toxicity or adverse effects. These short-term results suggest that PBHg may be useful for effective resuscitation after major blood loss.

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