For safety reasons, it is common to ventilate patients with 100% oxygen before tracheal extubation. This study demonstrates that this practice favors postoperative atelectasis.

The article presents the case of a 37-year-old patient with acute leukemia. Four days before the appearance of acute symptoms, the patient manifested unspecific prodromes, with headache, coughing, and tiredness. Within 18 hours, he then presented the complete picture of acute leukemia, with multiple brain hemorrhages, diffused leukemic infiltration of all organs, and the typical alterations in blood picture. Eighteen hours after the first specific symptoms, the patient died of therapy-resistant cerebral pressure.