POSTNATAL CHANGES IN OXYGEN TRANSPORT: RELATIONSHIP BETWEEN CARDIAC OUTPUT (CO), O2 CONSUMPTION, AND O2 CARRYING CAPACITY (CAP)
نویسندگان
چکیده
منابع مشابه
Thermophysical properties and oxygen transport in (Thx,Pu1−x)O2
Using Molecular Dynamics, this paper investigates the thermophysical properties and oxygen transport of (Thx,Pu1-x)O2 (0 ≤ x ≤ 1) between 300-3500 K. In particular, the superionic transition is investigated and viewed via the thermal dependence of lattice parameter, linear thermal expansion coefficient, enthalpy and specific heat at constant pressure. Oxygen diffusivity and activation enthalpy ...
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Background Chronic heart failure (CHF) is the leading hospital discharge diagnosis in patients over age 65 [1]. Emerging techniques in cardiovascular magnetic resonance (CMR) have resulted in unique opportunity for improvement of non-invasive assessment of the physiologic and anatomic effects of CHF. We have previously demonstrated the accuracy and feasibility of V̇O2 max measurements in the MRI...
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The relationship between cardiac output (CardOut) and oxygen consumption (VO2) during exercise has generally been assumed to be linear. To test this assumption, we studied 72 healthy subjects using a graded, 2-min cycle-ergometry exercise test to maximum while measuring gas exchange continuously and CardOut at the end of each stage, the latter using an open-circuit gas technique. Data for VO2 a...
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THAT THE RATE of pulmonary oxygen uptake (V̇O2) does not immediately increase in response to a step increase in work rate, resulting in the so-called “oxygen deficit,” is one of the oldest and most controversial observations in exercise physiology. Relatively little controversy emanates from the description of the V̇O2 kinetics: that the “fast” or “primary” component is exponential in character, ...
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Myocardial blood flow is unevenly distributed, but the cause of this heterogeneity is unknown. Heterogeneous blood flow may reflect heterogeneity of oxygen demand. The aim of the present study was to assess the relation between oxygen consumption and blood flow in small tissue regions in porcine left ventricle. In seven male, anesthetized, open-chest pigs, local oxygen consumption was quantitat...
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ژورنال
عنوان ژورنال: Pediatric Research
سال: 1977
ISSN: 0031-3998,1530-0447
DOI: 10.1203/00006450-197704000-00235