Abstract

• Arterial hypoxemia is a frequent occurrence in the immediate postoperaive period. For this reason many patients are given supplemental oxygen after operation.
  The present study was undertaken to compare the oxygenation by the various techniques (room air, reservoir tube, nasal cannula and simple mask) of administration in 40 patients in the recovery room.
  The results were as follows :
  1) All patients were not found to be hypoxic at the time of admission in the recovery room.
  2) There were significant increase of PaO₂ and saO₂ in reservoir tube, nasal cannula and simple mask group.
  3) There were no significant changes in arterial pH, PaCO₂ and base excess.
  In conclusion, resevoir tube is recommended effective and convenience device as means of oxygenation in the postopertive period.