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Stridor Reference Guide

Stridor

Stridor is caused by upper airway narrowing or obstruction. It is often heard without a stethoscope. It occurs in 10-20% of extubated patients. Stridor is a loud, high-pitched crowing breath sound heard during inspiration but may also occur throughout the respiratory cycle most notably as a patient worsens. In children, stridor may become louder in the supine position. Causes of stridor are pertussis, croup, epiglottis, aspirations.


Patient Recording

patient heart or lung sound
Stridor


Patient Recording - Half Speed Playback

patient heart or lung sound
Stridor


Position

Patient position
The patient's position should be sitting.

Listening Tips

Features:A loud, high-pitched wheezing sound heard during inspiration but may also occur throughout the respiratory cycle. Often heard without a stethoscope


Waveform (Phonocardiogram)



Stridor | Reference Page #140

Authors and Reviewers

Authored by Dr. Jonathan Keroes, MD and Diane Wrigley, PA. Medically reviewed by William French, MS, RRT. Medically reviewed by Dr. Barbara Erickson, PhD, RN, CCRN, Last Update: 12/06/2021


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