Acute, normovolemic hemodilution: effects on systemic and splanchnic blood flows and oxygen metabolism
نویسندگان
چکیده
منابع مشابه
Hemodynamic 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 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 کاملAcute Normovolemic Hemodilution: A Practical Approach
Justifications: Perioperative allogeneic blood transfusion can be reduced or even completely avoided by using a set of different strategies: meticulous hemostasis, the use of pharmaceutical agents that assist in the process of coagulation/ fibrinolysis, the use of blood substitutes, induced hypotension, preoperative autologous blood donation, collection and reinfusion of autologous blood during...
متن کاملEffects of normovolemic hemodilution combined with controlled hypotension on extravascular lung water and systematic oxygen metabolism for elderly patients
Objective: To investigate the effect of acute normovolemic hemodilution (ANH) combined with controlled hypotension (CH) on extravascular lung water and systematic oxygen metabolism for elderly patients, and to explore the clinical security of ANH + CH. Methods: 45 elderly patients undergoing elective spine and hip replacement surgery were selected and randomly divided into 3 groups (n=15 in eac...
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We studied the effects of normovolemic hemodilution on tissue oxygen extraction capabilities in a canine model of endotoxic shock. Eighteen anesthetized and mechanically ventilated dogs underwent normovolemic hemodilution with 6% hydroxyethyl starch solution to reach hematocrit (Hct) levels around 40, 30, or 20% before the administration of 2 mg/kg of Escherichia coli endotoxin. Cardiac tampona...
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ژورنال
عنوان ژورنال: Critical Care
سال: 2003
ISSN: 1364-8535
DOI: 10.1186/cc2227