The nurse is preparing the patient for a diagnostic procedure to remove pleural fluid for analysis. The nurse would prepare the patient for which test?

The respiratory defense mechanism most impaired by smoking is mucociliary clearance. Smoking damages the cilia lining the respiratory tract and increases mucus production, which hinders the movement of mucus and trapped particles out of the airways. This impairment allows pathogens and debris to accumulate in the lungs, increasing the risk for infections and chronic respiratory conditions such as bronchitis and COPD.

Rationale for correct answer:
3. Mucociliary clearance. The mucociliary escalator is a key respiratory defense that traps and removes inhaled particles through coordinated ciliary movement and mucus transport. Cigarette smoke paralyzes and destroys cilia, thickens mucus, and decreases its clearance efficiency. As a result, irritants and pathogens remain in the airways, leading to chronic inflammation, infection, and airway obstruction over time.

Rationale for incorrect answers:
1. Cough reflex. Although chronic smoking may eventually dull the cough reflex, its initial and most significant effect is on the cilia and mucus transport system, not the cough reflex itself.
2. Filtration of air. Filtration primarily occurs in the nasal passages through hairs and turbinates, which are less affected by smoking compared to the ciliary mechanism in the lower airways.
4. Reflex bronchoconstriction. This reflex protects the airways from irritants by narrowing the bronchi; while smoke can trigger bronchoconstriction, it does not impair this reflex as consistently as it damages cilia.

Take-home points:

• Smoking destroys cilia and thickens mucus, impairing mucociliary clearance.
• This leads to mucus retention, infection risk, and chronic airway inflammation.
• Effective defense depends on intact ciliary function to remove debris and pathogens.
• Smoking cessation is essential to allow partial recovery of ciliary function and airway defense.

A client who understands the pulmonary angiography procedure recognizes that pressure and mild bleeding can occur at the catheter insertion site and that a warm, flushed feeling and urge to cough may be experienced when the contrast dye is injected. These are expected responses and indicate an accurate understanding of the procedure and its sensations.

Rationale for correct answers:
1. “I may feel some pressure at the site.” During pulmonary angiography, a catheter is inserted—usually into the femoral vein—and guided into the pulmonary artery. The client may feel mild pressure or discomfort at the insertion site, which is normal and indicates proper procedural awareness.

2. “I may have bleeding at the site following the procedure.” After the procedure, minor bleeding or oozing at the insertion site can occur due to vascular puncture. The nurse must apply pressure and monitor the site for hematoma formation. Recognizing this possibility demonstrates that the client understands a potential post-procedure concern.

4. “I will sense a warm, flushed feeling and an urge to cough when the dye is injected.” The contrast dye used during angiography often causes transient sensations such as warmth, flushing, or a brief urge to cough. These are expected physiological reactions to the contrast medium and are not harmful. The client’s acknowledgment of this indicates appropriate preparation and understanding.

Rationale for incorrect answer:
3. “I will be able to go to the bathroom when I return from the test.” After pulmonary angiography, the client is usually placed on bed rest for several hours to prevent bleeding from the catheter insertion site. Movement, including getting up to use the bathroom, is restricted until the insertion site is stable and vital signs are normal. This statement demonstrates a misunderstanding of post-procedure care.

Take-home points:

• Pressure, minor bleeding, and warmth from dye injection are normal experiences during pulmonary angiography.
• Clients should remain on bed rest after the procedure to prevent bleeding at the insertion site.
• Educating the client on expected sensations and post-procedure precautions promotes comfort, safety, and cooperation.