Effects of two fractions of inspired oxygen during anesthesia on early postanesthesia oxygenation in healthy dogs.

OBJECTIVE To evaluate the effects of 2 fractions of inspired oxygen (Fios) during anesthesia on postanesthesia Pao and other measures of oxygen exchange. ANIMALS 22 healthy adult sexually intact female dogs undergoing ovariohysterectomy by ventral midline celiotomy. PROCEDURES Dogs were randomly assigned to receive either oxygen (Fio > 0.