Evaluation of stridor

Despite enormous advances in the field of pediatric airway, stridor continues to be the hallmark sign of airway compromise. Recognition of the signs and symptoms of airway obstruction promotes early diagnosis. The diagnostic evaluation of stridor has progressed with newer techniques being studied. When appropriate, these are added to the time-honored techniques of direct laryngoscopy and bronchoscopy. For example, acoustic assessment of snoring intensity has been proposed as a study parameter during polysomnography. Acoustic rhinometry continues to evolve from the role, primarily, of research tool to a role of increasing clinical application. Even traditional techniques such as plain radiographs and fiberoptic laryngoscopy are being used to better quantify the degree of airway compromise.