Approach to Selecting Respiratory Support:
-The role of noninvasive respiratory support is generally to reduce the patient's work of breathing, thereby avoiding diaphragmatic exhaustion.
-The goal of noninvasive respiratory support isn't to immediately normalize the ABG.
-Serial evaluation by experienced practitioners is generally far more useful than monitoring ABG values.
-The choice of BiPAP vs. HFNC may be made on the basis of the patient's diagnosis (e.g. pneumonia vs. heart failure), not the ABG values.
-BiPAP should never be used to “blow off” CO2 in a patient with hypoventilation due to drug intoxication.
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