Oxygen Transport and Consumption during Acute Hemodilution
نویسندگان
چکیده
منابع مشابه
Oxygen transport during hemodilution with a perfluorocarbon-based oxygen carrier: effect of altitude and hyperoxia.
Oxygen delivery and consumption after hemodilution with a perfluorocarbon-based oxygen carrier (PFCOC) was evaluated at sea level and at 2,600 m above sea level. Fifteen anesthetized rats were subjected to a two-exchange normovolemic hemodilution of 40% of the circulating blood volume each. First exchange was performed with a colloid solution. Second exchange was with 80% PFCOC and 20% colloid....
متن کاملHemodynamic compensation during acute normovolemic hemodilution.
To the Editor:—Acute normovolemic hemodilution (ANH) causes a reduction in arterial oxygen content because of reduced hemoglobin concentration. The primary compensatory mechanism during ANH is an increase in cardiac output to maintain systemic oxygen delivery. Therefore, the lower limit of an acceptable hemoglobin concentration is related to how low hemoglobin can be reduced without jeopardizin...
متن کاملSubcutaneous perfusion and oxygen during acute severe isovolemic hemodilution in healthy volunteers.
HYPOTHESIS Acute severe isovolemic anemia (to a hemoglobin [Hb] concentration of 50 g/L) does not decrease subcutaneous wound tissue oxygen tension (PsqO(2)). SETTING University hospital operating room and inpatient general clinical research center ward. SUBJECTS Twenty-five healthy, paid volunteers. METHODS Subcutaneous oxygen tension and subcutaneous temperature (Tsq) were measured cont...
متن کاملHemodynamic Compensation during Acute Normovolemic Hemodilution
To the Editor:—Acute normovolemic hemodilution (ANH) causes a reduction in arterial oxygen content because of reduced hemoglobin concentration. The primary compensatory mechanism during ANH is an increase in cardiac output to maintain systemic oxygen delivery. Therefore, the lower limit of an acceptable hemoglobin concentration is related to how low hemoglobin can be reduced without jeopardizin...
متن کاملConvective oxygen transport and tissue oxygen consumption in Weddell seals during aerobic dives.
Unlike their terrestrial counterparts, marine mammals stop breathing and reduce their convective oxygen transport while performing activities (e.g. foraging, courtship, aggressive interactions, predator avoidance and migration) that require sustained power output during submergence. Since most voluntary dives are believed to remain aerobic, the goal of this study was to examine the potential im...
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ژورنال
عنوان ژورنال: Annals of Surgery
سال: 1968
ISSN: 0003-4932
DOI: 10.1097/00000658-196807000-00006