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. 2022 Nov 21;39(2):423–425. doi: 10.1177/02676591221141327

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Figure 1. — Sequence of arterial blood gases (ABGs), the first one at arrival in emergency department, the second one in ICU 30 min afterwards. The patient was intubated, ventilated in pressure control mode with 6 cm H₂O of positive end-expiratory pressure (PEEP), 15 cm H₂O of pressure control and 50% inspired fraction of oxygen (FiO2). Definitions: pH: acid-base balance; PaO2: partial pressure of oxygen; PaCO2: partial pressure of carbon dioxide; SpO2: oxygen saturation; Lac: lactate; BE: base excess; Na+: sodium; K+: potassium; Ca+: calcium; Bicarb: bicarbonate; AG: anion gap; Osm: serum osmolality.