American Society of Anesthesiologists

$Fig. 1. Method of case exclusion: Intraoperative arterial blood gas (ABG) values with 40 mmHg > Paco2> 600 mmHg, 20 mmHg > Paco2> 110 mmHg, 6.99 > pH > 7.99, 0.21 > fraction inspired oxygen (Fio2) > 1.00, associated with a median 20 mmHg > end-tidal (Et) CO2(carbon dioxide) > 110 mmHg, P/F ratio > 600, or a combined partial pressure of oxygen (Paco2) < 55 mmHg with a median Spo2value more than 93% were excluded. ASA = American Society of Anesthesiologists; EtCO2= end-tidal carbon dioxide; Fio2= fraction inspired oxygen; Paco2= partial pressure of carbon dioxide; Paco2= partial pressure of oxygen; PBW = predicted body weight; P/F = PaOC/Fio2; PIP = peak inspiratory pressure; Spo2= Pulse Oximeter Oxygen Saturation; Vt = tidal volume.$

Fig. 1. Method of case exclusion: Intraoperative arterial blood gas (ABG) values with 40 mmHg > Paco²> 600 mmHg, 20 mmHg > Paco²> 110 mmHg, 6.99 > pH > 7.99, 0.21 > fraction inspired oxygen (Fio²) > 1.00, associated with a median 20 mmHg > end-tidal (Et) CO²(carbon dioxide) > 110 mmHg, P/F ratio > 600, or a combined partial pressure of oxygen (Paco²) < 55 mmHg with a median Spo²value more than 93% were excluded. ASA = American Society of Anesthesiologists; EtCO²= end-tidal carbon dioxide; Fio²= fraction inspired oxygen; Paco²= partial pressure of carbon dioxide; Paco²= partial pressure of oxygen; PBW = predicted body weight; P/F = PaOC/Fio²; PIP = peak inspiratory pressure; Spo²= Pulse Oximeter Oxygen Saturation; Vt = tidal volume.

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