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Bronchophony - Healthy Reference Guide

Bronchophony - Healthy

Ask the patient to say "99" several times while auscultating the chest walls. Over healthy lung areas, "99" is not understandable. This is because sound is impeded in normal lungs. Compare this voiced breath sound to the recording in the "Bronchophony - Abnormal" lesson.

Patient Recording

patient heart or lung sound
Bronchophony - Healthy

Patient Recording - Half Speed Playback

patient heart or lung sound
Bronchophony - Healthy


Patient position
The patient's position should be sitting.

Listening Tips

Features:Ask patient to say "99" several times. Auscultate chest walls. Over healthy lung areas "99" is not understandable. Compare this sound to the Bronchophony - Abnormal recording.

Waveform (Phonocardiogram)

Bronchophony - Healthy | Description, Audio and Animations | #139

Authors and Reviewers

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



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