Question

Which best describes the purpose of pursed-lip breathing in the client with COPD?

To reduce the overall work of breathing
To strengthen the muscles of the rib cage
To exercise the muscles of the diaphragm
To balance the effects of carbon dioxide and oxygen in the bloodstream

Answer 1

Pursed-lip breathing in COPD patients helps to decrease the work of breathing by preventing airway collapse during exhalation, improving breathlessness, and aiding in the more efficient gas exchange of oxygen and carbon dioxide.

Step-by-step explanation:

Pursed-Lip Breathing in COPD Patients

The purpose of pursed-lip breathing in individuals with COPD (Chronic Obstructive Pulmonary Disease) is primarily to decrease the work of breathing. This technique helps to slow down the exhalation phase of respiration, which can prevent the collapse of alveoli and allow for better air exchange. Pursed-lip breathing aims to stabilize the airways during expiration, reduce breathlessness, and improve ventilation. This leads to a rebalance of oxygen and carbon dioxide levels in the bloodstream, improving overall gas exchange.

By inhaling slowly through the nose and exhaling through pursed lips, as if blowing through a straw, this form of controlled breathing helps COPD patients manage the flow-resistive and elastic work required during respiration. It is important to note that while this technique aids in reducing the work of breathing, it does not necessarily strengthen the muscles of the rib cage, exercise the diaphragm, or directly increase lung volume or compliance.