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Mixed venous PO2 during exercise in patients with different cardiopulmonary function.

Authors
  • Lang, F
  • Daum, S
Type
Published Article
Journal
Respiration; international review of thoracic diseases
Publication Date
Jan 01, 1983
Volume
44
Issue
3
Pages
161–170
Identifiers
PMID: 6857001
Source
Medline
License
Unknown

Abstract

The mixed venous PO2(PvO2) as a parameter of peripheral O2 supply correlates at rest and during exercise with the coefficient of oxygen delivery (COD = CaO2 x CO/VO2). PvO2 is determined by the O2 capacity, pulmonary and cardiac function. Values under 34 mm Hg at rest and a pronounced drop of PvO2 during exercise indicate a restriction of either pulmonary or cardiac function or both. The effect of respiratory disorder on PvO2 is striking only when the PaO2 is below 65 mm Hg. Besides PvO2, the meaning of the mean peripheral O2 capillary pressure (PacO2) for the peripheral O2 supply should also be considered.

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