Effects of Halothane Anesthesia on Functional Residual Capacity and Alveolar–Arterial Oxygen Tension Difference
1973; Lippincott Williams & Wilkins; Volume: 38; Issue: 1 Linguagem: Inglês
10.1097/00000542-197301000-00007
ISSN1528-1175
AutoresRobert F. Hickey, William D. Visick, H. Barrie Fairley, Henry E. Fourcade,
Tópico(s)Cardiovascular and exercise physiology
ResumoFunctional residual capacity (FRC) and alveolarto-arterial oxygen tension difference (A-aDo2) were measured and compared in 16 patients prior to and during halothane: oxygen anesthesia with spontaneous respiration. After an hour of anesthesia (end-tidal halothane 1.0 per cent), FRC had decreased to 81 per cent of awake control values (range 50-104 per cent) and A-aDo2 had increased from a preoperative value of 145 to 232 torr. The decrease in FRC correlated inversely with the changes in A-aDo2 (r = 0.63, P
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