The clinic nurse is caring for a patient who has been diagnosed with emphysema and who has just had a pulmonary function test (PFT) ordered.

The patient asks, "What exactly is this test for?" What would be the nurse's best response?

Choice A rationale

Obtaining a sputum specimen in the evening is not the preferred timing for this procedure. Sputum is best collected in the morning immediately upon the client awakening. During sleep, respiratory secretions accumulate in the bronchi and trachea, making it easier for the client to cough up a concentrated and representative sample of the lower respiratory tract. Evening collections are more likely to contain saliva and debris rather than the desired bronchial secretions.

Choice B rationale

Collecting a sputum specimen after a meal is contraindicated because it increases the risk of the sample being contaminated with food particles or gastric contents. Furthermore, the physical effort of coughing deeply to produce sputum immediately after eating can trigger a gag reflex or lead to vomiting and aspiration. To ensure the purity of the specimen and the comfort of the client, it is essential to perform the collection before the client consumes any food.

Choice C rationale

Rinsing the mouth with water before collecting a sputum specimen is a critical step to reduce contamination by oral flora and saliva. This action helps clear away food particles and excessive mouth bacteria that could interfere with the accuracy of the culture and sensitivity results. It ensures that the substance coughed up is actually from the lower airways. Note that the client should use plain water rather than antiseptic mouthwash to avoid killing pathogens.

Choice D rationale

Saving a sputum specimen in a clean container is incorrect because the procedure requires a sterile container. Using a container that is merely clean but not sterile introduces outside microorganisms into the sample, which can lead to false-positive results in a lab culture. To accurately identify the specific pathogen causing a respiratory infection, the specimen must be handled using aseptic technique and placed directly into a laboratory-approved sterile specimen cup for processing.

Choice A rationale

Bradycardia is not a typical assessment finding for a client with emphysema. Instead, these clients often experience tachycardia as a compensatory mechanism for chronic hypoxia. The heart rate increases to pump oxygenated blood more quickly to the tissues in response to decreased gas exchange efficiency in the alveoli. Therefore, a slow heart rate would be unexpected unless the client has a coexisting cardiac conduction disorder or is taking certain medications like beta-blockers.

Choice B rationale

Dyspnea, or shortness of breath, is a hallmark symptom of emphysema due to the destruction of alveolar walls and the loss of elastic recoil in the lungs. This leads to air trapping and hyperinflation, making it difficult for the client to exhale fully and inhale fresh air. As the disease progresses, dyspnea occurs even at rest because the physiological dead space increases, significantly reducing the surface area available for effective gas exchange and oxygenation.

Choice C rationale

Deep respirations are generally not found in emphysema; rather, clients tend to have rapid, shallow breathing patterns. Because of the hyperinflation of the lungs and the flattened diaphragm, the chest cannot expand and contract effectively for deep breaths. Clients often use accessory muscles to assist with breathing and may adopt a tripod position to help move air. The inefficiency of the respiratory pump in emphysema prevents the client from achieving significant tidal volumes.

Choice D rationale

A barrel chest is a classic clinical sign of emphysema resulting from chronic air trapping in the alveoli. Over time, the lungs stay hyperinflated, which increases the anteroposterior diameter of the thorax relative to the lateral diameter. This anatomical change reflects the permanent overdistension of the air spaces distal to the terminal bronchioles. It is a physical manifestation of the long-term struggle to exhale against obstructed airways and lost lung elasticity.

Choice E rationale

Clubbing of the fingers is a clinical sign characterized by the bulbous enlargement of the distal phalanges and a loss of the normal angle at the nail bed. It is often associated with chronic hypoxemia, which occurs in advanced emphysema. The exact mechanism involves increased capillary growth and fibroblast activity in the fingertips in response to low systemic oxygen levels. Its presence indicates long-standing respiratory insufficiency and significant impairment in pulmonary gas exchange.