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23: Stridor
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Published:May 2023
Jennifer A. Nead, MD, FAAP, Olamide Ajagbe, MD, "Stridor", Caring for the Hospitalized Child: A Handbook of Inpatient Pediatrics, American Academy of Pediatrics Section on Hospital Medicine, Jeffrey C. Gershel, MD, FAAP, Daniel A. Rauch, MD, FAAP, SFHM
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Stridor is a sign of upper airway obstruction caused by turbulent airflow. Stridor may also be an expiratory or biphasic respiratory sound. Inspiratory stridor usually indicates obstruction above the glottis, whereas expiratory stridor suggests obstruction below the glottis in the distal trachea. Biphasic stridor suggests a fixed glottic or subglottic obstruction. Although infectious croup is the most common cause of acute stridor, there are many other etiologies for acute and chronic stridor (Table 23–1). Consider these other etiologies when there is a lack of upper respiratory tract symptoms, sudden onset of stridor, and/or chronic or recurrent stridor.
Croup...
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