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Algorithm of intubation in ICU. The choice of the preoxygenation method is based on the device the patient is supported with at the time of intubation decision. 1, using the MACOCHA scale; 2, except in case of left heart failure or cardiogenic pulmonary. NIV, noninvasive ventilation; HFNC, high-flow nasal cannula oxygen support; RSI, rapid sequence induction.
