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Respiratory Concept Lab Notes
Course: Advanced Health Assessment (NURS612)
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Students shared 133 documents in this course
University: Maryville University
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Respiratory Concept Lab
When your patient breathes, air rushes through the nasal passages & trachea, the
bronchi, & into the lungs where it’s absorbed by the alveoli.
Healthcare professionals listen to these sounds through a stethoscope – a process called
auscultation. Once you know how to listen to these sounds, they can give you diagnostic
information about your patient’s respiratory system.
Normal Lung Sounds
Bronchial
oYou can hear bronchial sounds above the manubrium, over the trachea.
oBronchial sounds are:
Harsh
High-pitched
Loud
Bronchovesicular
oThese sounds are heard over the main bronchi.
oThese sounds are:
Medium in loudness
Medium in pitch
Vesicular
oThese sounds are heard over the lower bronchi, the bronchioles, & the lobes.
oThe left lung has two lobes. The right has three lobes.
oVesicular sounds are:
Softest
Lowest in pitch
Abnormal Lung Sounds
Decreased Breath Sounds
oNormal lung sounds are usually easy to hear with a stethoscope. Occasionally
you will hear sounds that are decreased in intensity, or even absent.
oDecreased breath sounds occur in airway disease or obstruction, diaphragm
paralysis, or impairment of sound transmission through the chest wall.
oWorsening symptoms may lead to absent breath sounds. Absent lung sounds
usually indicate that no air is moving in the lung tissue.
Increased Breath Sounds
oLocation of breath sounds matters!
oA “normal sound” is not normal if it is in the wrong place.
oA common abnormal finding is hearing bronchial or bronchovesicular sounds,
which are louder and harsher, in peripheral lung tissues where vesicular sounds
are normally heard. This occurs when underlying lung tissue is filled with liquid or
solid material, rather than air.