Introduction Stridor is an abnormal, high-pitched sound produced by turbulent airflow through a partially obstructed airway. Stridor is a dangerous finding and may indicate imminent airway obstruction. It can be inspiratory, expiratory or biphasic. Clinical presentation of stridor Hypoxia Respiratory distress Altered mental status Inability to speak Inability to swallow Differential diagnoses Infectious causes Croup, … Read more