Intermediate Lung Sounds

Wheeze - Monophonic Sounds

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Monophonic wheezes are loud, continuous sounds occurring in inspiration, expiration or throughout the respiratory cycle. The constant pitch of these sounds creates a musical tone. The tone is lower in pitch compared to other adventitious breath sounds. The single tone suggests the narrowing of a larger airway.

These lung sounds are heard over anterior, posterior and lateral chest walls. These sounds can be more intense over lung areas affected by partial obstructions.

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

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The recommended patient position is Sitting

Waveform

This waveform plots sound amplitude on the vertical axis against time on the horizontal axis.

Skin and Ribs

Blended View

Lungs

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Lessons

1	Vesicular - Diminished
2	Bronchophony - Healthy
3	Bronchophony - Abnormal
4	Egophony - e
5	Egophony - a
6	Whispered Pectoriloquy - Healthy
7	Whispered Pectoriloquy - Abnormal
8	Wheeze - Expiratory
9	Wheeze - Monophonic
10	Wheeze - Polyphonic
11	Crackles - Early Inspiratory (Rales)
12	Crackles - Late Inspiratory (Rales)
13	Stridor

Practice Drill

Listening Tips
A synopsis of important sound features and timing for this abnormality.
Loud, continuous sounds occurring throughout the respiratory cycle. Expiration period is frequently longer. Heard over anterior, posterior and lateral chest walls.

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