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Stridor

Virtual Auscultation

patient torso with stethoscope chestpiece

patient position during auscultation
The patient's position is sitting.

Lesson

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.

Waveform



Authors and Sources

Authors and Reviewers

Sources

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