Acute hypoxemic respiratory failure(AHRF)refers to“de novo”respiratory failure,excluding cardiogenic pulmonary edema or exacerbation of chronic lung diseases.AHRF can be defined as the arterial pressure of oxygen/in...Acute hypoxemic respiratory failure(AHRF)refers to“de novo”respiratory failure,excluding cardiogenic pulmonary edema or exacerbation of chronic lung diseases.AHRF can be defined as the arterial pressure of oxygen/inspiratory fraction of oxygen(PaO_(2)/FiO_(2))≤300 mmHg in patients receiving oxygen therapy.[1]Whereas FiO_(2)cannot be measured under a standard oxygen mask,it can be best estimated using the following formula:FiO_(2)(%)=flow of oxygen(L/min)×3+21%.[2]Several oxygenation strategies can be proposed as an alternative to standard oxygen in patients with AHRF,including highflow nasal cannula oxygen(HFNC),continuous positive airway pressure(CPAP),and noninvasive ventilation(NIV).展开更多
文摘Acute hypoxemic respiratory failure(AHRF)refers to“de novo”respiratory failure,excluding cardiogenic pulmonary edema or exacerbation of chronic lung diseases.AHRF can be defined as the arterial pressure of oxygen/inspiratory fraction of oxygen(PaO_(2)/FiO_(2))≤300 mmHg in patients receiving oxygen therapy.[1]Whereas FiO_(2)cannot be measured under a standard oxygen mask,it can be best estimated using the following formula:FiO_(2)(%)=flow of oxygen(L/min)×3+21%.[2]Several oxygenation strategies can be proposed as an alternative to standard oxygen in patients with AHRF,including highflow nasal cannula oxygen(HFNC),continuous positive airway pressure(CPAP),and noninvasive ventilation(NIV).
