Determination of the Factors Causing Treatment Failure in Children Receiving Oxygen Therapy With High-flow Nasal Cannula Due to Moderate and Severe Respiratory Distress

Oxygen therapy with a high-flow nasal cannula (HFNC) is a well-tolerated, relatively new, non-invasive alternative ventilation treatment modality. On the other hand, HFNC failure delays advanced respirator supportive treatments, prolongs hospitalization in the intensive care unit, and emergency department, and causes a significant increase in morbidity and mortality with hypoxemia, neurological impairment, and/or hemodynamic instability. The investigators aimed to identify the variables that predict treatment failure in order to identify the patients in which HFNC treatment may fail and not delay the transition to advanced respiratory support treatments in these patients.