One-lung ventilation with fixed and variable tidal volumes on oxygenation and pulmonary outcomes: A randomized trial.

Objective: Test the hypothesis that one-lung ventilation with variable tidal volume improves intraoperative oxygenation and reduces postoperative pulmonary complications after lung resection.

Background: Constant tidal volume and respiratory rate ventilation can lead to atelectasis. Animal and human ARDS studies indicate that oxygenation improves with variable tidal volumes.

[Anesthesia and perioperative considerations for patients with prior SARS-CoV-2 infection].

The timing of elective surgery is very important in patients, who suffered SARS-CoV-2 virus infection. According to a study of more than 100,000 patients, it takes approximately seven weeks to be safely admitted to elective surgery. In the case of emergency surgeries, the date of the surgery should be considered based on the patient's general condition and the expected improvement from the surgery.