Question

Observe use of accessory muscles - watch as client breathes and note use of muscles. What is the purpose of observing the use of accessory muscles in the posterior thorax?

1) To assess the efficiency of breathing
2) To determine the strength of the diaphragm
3) To identify any respiratory abnormalities
4) To evaluate the function of the intercostal muscles

Answer 1

Observing the use of accessory muscles in the posterior thorax is done to identify any respiratory abnormalities. It provides indications of respiratory efficiency and can reveal underlying breathing mechanics issues.

Step-by-step explanation:

The purpose of observing the use of accessory muscles in the posterior thorax is primarily to identify any respiratory abnormalities. Accessory muscles such as the intercostal muscles and the diaphragm contribute significantly to breathing. The intercostal muscles assist in changing the dimensions of the rib cage during both inspiration and expiration. When there is difficulty breathing, accessory muscles may be used more, which can indicate abnormalities such as respiratory distress or chronic lung conditions.

Watching a client use accessory muscles can give healthcare professionals indications of respiratory efficiency and highlight potential issues in the mechanics of breathing. For instance, if the accessory muscles are being utilized even at rest, it may suggest that the diaphragm and the regular respiratory muscles are not functioning as efficiently as they should be. This can be a sign of an underlying condition that needs further investigation or treatment.