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Hypoxaemia during cardiopulmonary bypass
  1. A. L. Muir,
  2. I. A. Davidson
  1. Departments of Medicine and Anaesthetics, The University of Edinburgh
  2. The Royal Infirmary of Edinburgh


    Blood oxygenation was studied in patients undergoing cardiopulmonary bypass using the Rygg-Kyvsgaard bubble oxygenator. Oxygenation was satisfactory in perfusions carried out at normothermia and during hypothermia. During the rewarming phase of hypothermic perfusions hypoxaemia occurred. This could be prevented by a ganglion blocking agent (trimetaphan) given during the cooling phase.

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