In this video, there is a quick review of breath sounds heard on auscultation.
The normal breath sounds are Vesicular breath sounds heard in most of the lungs. It is soft and of low pitch. The inspiratory phase in longer than the expiration without any pause between these two phases.
Abnormalities can be the presence of bronchial breath sounds, diminished or absent breath sounds, or the presence of added/Adventitious breath sounds.
Bronchial breathing is hollow, tubular in quality, and high-pitched. There is a definite gap between inspiration & expiration.
Added or Adventitious sounds include wheezing, Crepitations, Pleural friction rub & Stridor.
Wheeze can be Low pitched also known as Rhonchi or High pitched which is the usual wheeze. Low-pitched wheeze/Rhonchi is caused by secretions in smaller airways causing narrowing while high-pitched wheeze is because of Bronchospasm.
Stridor is not included in this video as it is not classically a breath sound auscultated but is audible without a stethoscope and is caused by narrowing/obstruction of larger airways.
A good stethoscope like the Littman stethoscope is a must to pick up sounds easily during auscultation.
It is encouraged to listen to breath sounds (included in the video) with headphones.
We hope you enjoy this video!
Good luck!
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