After removing a non-tunneled central venous catheter (CVC), the nurse applies firm pressure and then secures an air-occlusive dressing over the site. What is the standard recommended duration for keeping this dressing in place to prevent air embolism and ensure hemostasis?

1. A

   1-2 hours

2. B

   6-8 hours

3. C

   24-48 hours

4. D

   72 hours (3 days)

Appeared in: NORCET 9 Prelims-2025

Explanation

• The catheter tract requires 24 to 48 hours to properly seal and epithelialize, closing the connection between the skin and the large vein.
• This duration is the standard of care to prevent a potentially fatal air embolism, which can occur if air is drawn into the venous system through an unsealed tract.
• An air-occlusive dressing, maintained for this period, provides a secure barrier against air entry and helps maintain hemostasis at the insertion site.

Why Other Options Were Wrong

• Option A: This is an insufficient amount of time for the tract to begin sealing, posing a significant and unacceptable risk of air embolism and bleeding.
• Option B: While longer than 1-2 hours, this period is still too short for complete and reliable tract closure, leaving the patient vulnerable to complications.
• Option D: Keeping the dressing on for 3 days is generally unnecessary for a routine removal, increases the risk of skin irritation, and can trap moisture, potentially leading to a site infection.

Related Visual

Clinical Relevance

• Nursing practice connection: Safe nursing care depends on performing Post-procedure care following central venous catheter (CVC) removal in the correct sequence, documenting the action clearly, and monitoring for the expected response.
• Proper CVC removal technique and post-procedure care are critical nursing skills to prevent life-threatening complications like air embolism and hemorrhage.
• Nurses must educate the patient to keep the dressing dry and intact for the full 24-48 hours and to immediately report symptoms like shortness of breath, chest pain, dizziness, or bleeding from the site.
• What if? The patient was on anticoagulant therapy. The nurse must apply firm pressure for a longer duration (e.g., 10 minutes or more) and be extra vigilant in assessing for hemostasis before applying the dressing.

How to Approach the Question

• First, identify the core of the question: It asks for the specific time duration for a post-procedure intervention (dressing after CVC removal).
• Recognize this as a question of standard nursing protocol and patient safety.
• Recall the primary risks associated with CVC removal: air embolism and bleeding.
• Evaluate the options based on these risks. Ask yourself: Which timeframe provides a safe window for the body to heal the tract without being excessively long?
• Eliminate options that are clearly too short (high risk of embolism) or unnecessarily long (risk of skin irritation/infection).
• Select the option that aligns with established clinical guidelines for preventing complications, which balances safety with practicality.

Concept Tested & Keywords

• Concept Tested: Post-procedure care following central venous catheter (CVC) removal.
• Stem keywords: non-tunneled central venous catheter, CVC removal, air-occlusive dressing, duration
• Lead-in keywords: standard recommended duration
• Clinical cues: The procedure is CVC removal, which carries a high risk of air embolism.
• Negative lead-in flag: false

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