Biomaterial Database

Hemoglobin solution: a potential oxygen transporting plasma volume expander. 1975

H R Kaplan, and V S Murthy

The potential of a 6% stroma-free human hemoglobin solution (WXb8326) as a plasma volume expander with oxygen transport capabilities was evaluated in barbiturate-anesthetized spontaneously breathing dogs. WXb8326 compared favorably with dextran-70 and 5% albumin solution as a plasma volume expander. Serial phlebotomies to a blood pressure of 35 mm Hg and immediate replacement with the above colloid expanders showed that only WXb8326-exchanged dogs survived acute reductions in hematocrit to critical levels of smaller than or equal to 5%. After several exchanges with WXb8326 to levels as low as 1%, it was possible to demonstrate acute survival. With less drastic reductions in the hematocrit (between 5 and 10%) all dogs survived acutely regardless of the type of plasma volume expander used; however, subacute survival rates varied. Oxygen transport characteristics during isovolumic hemodilution (phlebotomy and simultaneous replacement with WXb8326) were studied in a separate series of spontaneously breathing dogs in which hematocrit was reduced to approximately 50% of control. Oxygen content of erythrocytic hemoglobin (EHb) and extraerythrocytic hemoglobin (EEHb) resulting from infusions of WXb8326 was studied in arterial and venous blood at different levels of hemodilution. WXb8326 did not interfere with the arterial oxygen saturation of EHb in the pulmonary vascular bed and EEHb was oxygenated as efficiently as EHb. Oxygen delivery to tissues differed between EHb and EEHb. Erythrocytic hemoglobin met oxygen demands under basal conditions while EEHb contributed oxygen to tissues during conditions of high oxygen extraction. It is concluded that WXb8326 is an attractive condidate as a plasma volume expander with the capacity to transport oxygen to tissues.

UI	MeSH Term	Description	Entries
D008297	Male		Males
D010100	Oxygen	An element with atomic symbol O, atomic number 8, and atomic weight [15.99903; 15.99977]. It is the most abundant element on earth and essential for respiration.	Dioxygen,Oxygen-16,Oxygen 16
D010101	Oxygen Consumption	The rate at which oxygen is used by a tissue; microliters of oxygen STPD used per milligram of tissue per hour; the rate at which oxygen enters the blood from alveolar gas, equal in the steady state to the consumption of oxygen by tissue metabolism throughout the body. (Stedman, 25th ed, p346)	Consumption, Oxygen,Consumptions, Oxygen,Oxygen Consumptions
D010108	Oxyhemoglobins	A compound formed by the combination of hemoglobin and oxygen. It is a complex in which the oxygen is bound directly to the iron without causing a change from the ferrous to the ferric state.	Oxycobalt Hemoglobin,Oxycobalthemoglobin,Oxyhemoglobin,Hemoglobin, Oxycobalt
D010952	Plasma Substitutes	Any liquid used to replace blood plasma, usually a saline solution, often with serum albumins, dextrans or other preparations. These substances do not enhance the oxygen- carrying capacity of blood, but merely replace the volume. They are also used to treat dehydration.	Blood Expanders,Plasma Volume Expanders,Expanders, Blood,Expanders, Plasma Volume,Substitutes, Plasma,Volume Expanders, Plasma
D001810	Blood Volume	Volume of circulating BLOOD. It is the sum of the PLASMA VOLUME and ERYTHROCYTE VOLUME.	Blood Volumes,Volume, Blood,Volumes, Blood
D004285	Dogs	The domestic dog, Canis familiaris, comprising about 400 breeds, of the carnivore family CANIDAE. They are worldwide in distribution and live in association with people. (Walker's Mammals of the World, 5th ed, p1065)	Canis familiaris,Dog
D004353	Drug Evaluation, Preclinical	Preclinical testing of drugs in experimental animals or in vitro for their biological and toxic effects and potential clinical applications.	Drug Screening,Evaluation Studies, Drug, Pre-Clinical,Drug Evaluation Studies, Preclinical,Drug Evaluations, Preclinical,Evaluation Studies, Drug, Preclinical,Evaluation, Preclinical Drug,Evaluations, Preclinical Drug,Medicinal Plants Testing, Preclinical,Preclinical Drug Evaluation,Preclinical Drug Evaluations,Drug Screenings,Screening, Drug,Screenings, Drug
D004912	Erythrocytes	Red blood cells. Mature erythrocytes are non-nucleated, biconcave disks containing HEMOGLOBIN whose function is to transport OXYGEN.	Blood Cells, Red,Blood Corpuscles, Red,Red Blood Cells,Red Blood Corpuscles,Blood Cell, Red,Blood Corpuscle, Red,Erythrocyte,Red Blood Cell,Red Blood Corpuscle
D005078	Exchange Transfusion, Whole Blood	Repetitive withdrawal of small amounts of blood and replacement with donor blood until a large proportion of the blood volume has been exchanged. Used in treatment of fetal erythroblastosis, hepatic coma, sickle cell anemia, disseminated intravascular coagulation, septicemia, burns, thrombotic thrombopenic purpura, and fulminant malaria.