Skip Navigation LinksHome > January/February 1965 - Volume 26 - Issue 1 > The Value of Venous Oxygen Levels During General Anesthesia.
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The Value of Venous Oxygen Levels During General Anesthesia.

Theye, Richard A. M.D.; Tuohy, Gerald F. M.D.

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Abstract

Right atrial and superior vena caval O2 saturations were measured in premedicated adult patients under anesthesia, 5 with ether and 5 with halothane, during surgical treatment of varicose veins. Sampling catheters were positioned by electrocordiographic techniques. Saturations were determined by in vitro reflection oximetry.
Average venous O2 levels were higher during ether than during halothane anesthesia. The differences were small, however, and not considered to he of functional import. Average right atrial O2 levels agreed well with mixed-venous O2 levels predicted from previous studies of cardiac output and O2 uptake during ether or halothane anesthesia. Such measurements of right atrial O2 saturation offer advantage in clinical investigations on anesthesia.
(C) 1965 American Society of Anesthesiologists, Inc.
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