Topic 19 - Alterations of the normal respiratory sounds. Flashcards
Normal respiration, how doe the abdomen and chest move:
both the abdomen and chest move in and out together, allowing maximum expansion of the lungs.
Normal respiration, how doe the diaphragm move:
The diaphragm normally moves
downwards during inspiration and upwards during expiration
Name alterations for normal respiratory sounds:
- Weaker than normal
- Missing
- Louder than normal
- Bronchial respiratory sound
- Paradoxical breathing
How can we see/hear that there is a weaker respiratory sound?
Decreased airflow/conduction
Shallow breathing
How can we see/hear that there is a louder respiratory sound?
Increased airflow/conduction
How can we see/hear that there is a missing respiratory sound?
There is no conduction
Cause of weaker respiratory sound:
Thickened chest wall, decreased elasticity of the lung, hampered expansion of the lung
Cause of louder respiratory sound:
Exercise, dyspnea bronchitis, thin chest wall
Cause of missing respiratory sound:
Pleural adhesion or fluid accumulation, obstruction of pr. br., atelectasia of the lung
When is a bronchial respiratory sound normal?
During inhalation
Name some abnormal situations when we can hear bronchial respiratiry sounds:
- During exhalation
- During rapid respiration
- When peribronchal lung tissue contains less air
In thin and small animals, where can we localise the bronchial respiratory sound?
Over the large cranial bronchi
What is paradoxical respiration:
the diaphragm moves opposite to the normal directions of its movements
How can we see on the chest that there might be paradoxical respiratory?
movementis restricted, not able to expand properly
Paradoxical breathing, reason for chest disfunction:
Due to increased negative pressure the intercostal muscles collapsed