Bronchophony - Healthy Reference Guide.
Bronchophony - HealthyAsk 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 - Half Speed Playback
The patient's position should be sitting.
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.