[Application progress of ROX index in evaluating the efficacy of pediatric high-flow nasal cannula oxygen therapy].

Respiratory support is one of the key technologies for treating pediatric respiratory diseases. High-flow nasal cannula oxygen therapy (HFNC) represents a novel method of assisted respiratory support. The commonly used indicator for assessing HFNC efficacy in clinical practice is oxygenation index (PaO₂/FiO₂). However, this parameter has several limitations when evaluating the efficacy of HFNC in pediatrics. The ROX index, introduced in recent years, offers a more sensitive and specific assessment tool. This article reviews the application of the ROX index in assessing the efficacy of HFNC for pediatric respiratory failure, aiming to provide a more accurate assessment method.