Bronchophony - Abnormal

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Ask the patient to say "99" several times while auscultating the chest walls. Over consolidated areas "99" is understandable. This is because acoustic filtering is reduced in consolidated lung tissue, which allows better sound transmission.

Compare this breath sound to the recording in the "Bronchophony - Healthy" lesson.

Bronchophony - Abnormal
The recommended auscultation position for the stethoscope is the Chest wall position. For this sound, use stethoscope's Diaphragm.


maneuver
The recommended patient position is Sitting

Waveform

waveform
This waveform plots sound amplitude on the vertical axis against time on the horizontal axis.
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Listening Tips
A synopsis of important sound features and timing for this abnormality.
Ask patient to say "99" several times. Auscultate chest walls. Over consolidated areas "99" is understandable. For example, pneumonia in the upper lobes, both posterior and anterior. Compare to the Bronchophony - Healthy recording.
CaseID152
CourseID202
CourseCaseOrder3
ID189