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Breath Sounds in Respiratory System

This document describes different types of breath sounds: - Normal breath sounds are continuous vesicular sounds caused by air flowing through small airways. - Bronchial breath sounds are louder on inspiration than expiration with a clear pause between. They indicate conditions reducing air flow like pneumonia or collapse. - Wheezes are prolonged musical sounds on expiration indicating narrowed large airways from asthma, COPD or tumors. Unilateral wheezes suggest a lung tumor. - Crackles are discontinuous explosive sounds heard as bubbling or clicking, associated with conditions opening closed small airways like pneumonia.

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Arvinth Guna Segaran
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64 views2 pages

Breath Sounds in Respiratory System

This document describes different types of breath sounds: - Normal breath sounds are continuous vesicular sounds caused by air flowing through small airways. - Bronchial breath sounds are louder on inspiration than expiration with a clear pause between. They indicate conditions reducing air flow like pneumonia or collapse. - Wheezes are prolonged musical sounds on expiration indicating narrowed large airways from asthma, COPD or tumors. Unilateral wheezes suggest a lung tumor. - Crackles are discontinuous explosive sounds heard as bubbling or clicking, associated with conditions opening closed small airways like pneumonia.

Uploaded by

Arvinth Guna Segaran
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
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BREATH SOUNDS CSC RESPIRATORY SYSTEM

ABNORMAL
NORMAL

TYPE OF
SOUND

CONTINUOUS
VESICULAR

MECHANISM
OF SOUND
PRODUCTION

CHARACTERI
STIC
FEATURES

CLINICAL
CONDITIONS
ASSOCIATED

Due to
turbulence of
air flow
Transmitted
through
smaller
airways
Modified by
distal
structures

BRONCHIAL

WHEEZE

Inspiration >
expiration
No gap

Pleural effusion
Pneumothorax
Pulmonary
collapse

OTHERS

CRACKLES

PLEURAL
FRICTION RUB

STRIDOR

Due to
turbulence
in large
airway
No
modification
No
attentuation

DISCONTINUO
US

Inspiration
= expiration
Clear gap

Pneumonia
Pulmonary
fibrosis
Pulmonary
collapse

Due to
narrowing
of smaller
airways
Prolonged
expiration
phase

Prolonged
musical
sound
whistling
sounds

Bilateral wheeze
Asthma
Bronchitis
COPD
Unilateral wheeze
tumor

Due to
narrowing of
the larger
airways

Prolonged
musical sound
Loud and harsh

Tumor masses
Acute croup
Laryngomalacia

ARVINTH GUNA SEGARAN MBBS BATCH 21, YEAR 2 CSC

Due to
sudden
changes in
gas
pressure
Sudden
opening of
previously
closed small
airways

Short
explosive
sounds
Heard as
bubbling or
clicking

Pneumonia
COPD
Chronic
bronchitis
Lung
abscess

Two inflamed
surfaces of
pleura
rubbing each
other

A rubbing or
grating
sound
Louder =
inspiration
Better
detected
patient
leaning
forward

Pneumothora
x
Pneumonia
pleuritis

BREATH SOUNDS CSC RESPIRATORY SYSTEM


WHAT I THINK
IT IS

ARVINTH GUNA SEGARAN MBBS BATCH 21, YEAR 2 CSC

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