Hemodynamic Responses to Hypoxia and Hypercapnia during Acute Normovolemic Hemodilution in Anesthetized Cats.
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 کاملTransesophageal echocardiographic hemodynamic monitoring during preoperative acute normovolemic hemodilution.
BACKGROUND Preoperative acute normovolemic hemodilution may compromise oxygen transport. The aims of our study were to describe the hemodynamic effects of normovolemic hemodilution and to determine its effect on systolic and diastolic cardiac function by multiplane transesophageal echocardiography. METHODS In eight anesthetized patients (aged 13-51 yr) without heart disease, hemoglobin was re...
متن کاملQuantitative evaluation of hemodynamic parameters during acute alveolar hypoxia and hypercapnia in the isolated ventilated-perfused rabbit lung
Introduction: Acute respiratory disorders such as obstructive pulmonary diseases and hypoventilation may lead to alveolar hypoxia and hypercapnia which their effects on pulmonary vascular beds are controversial. The aim of this study was to establish the isolated perfused lung setup and investigate the effects of alveolar hypoxia and hypercapnia on pulmonary vascular resistance. Methods: White ...
متن کاملAcute decrease in renal microvascular PO2 during acute normovolemic hemodilution.
Large differences in the tolerance of organ systems to conditions of decreased O(2) delivery such as hemodilution exist. The kidney receives approximately 25% of the cardiac output and O(2) delivery is in excess of the oxygen demand under normal circumstances. In a rat model of acute normovolemic hemodilution (ANH), we studied the effect of reduced hematocrit on renal regional and microvascular...
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ژورنال
عنوان ژورنال: The Japanese Journal of Physiology
سال: 2000
ISSN: 0021-521X
DOI: 10.2170/jjphysiol.50.227