Venous Access Devices Flashcards

What is the primary purpose of venous access devices?

Answer: To allow for the infusion of intravenous fluids and medications

The primary purpose of venous access devices is to provide a reliable and continuous route for the infusion of intravenous fluids and medications directly into a patient's bloodstream. These devices, such as peripheral IVs or central lines, allow healthcare professionals to administer necessary therapies, draw blood samples, and maintain hydration without repeated needle sticks. This ensures efficient and effective delivery of treatment.

Which of the following is a type of venous access device?

Answer: Peripheral intravenous catheter (PIV)

A Peripheral Intravenous Catheter (PIV) is a common type of venous access device used for short-term intravenous therapy. It provides direct access to a peripheral vein for administering fluids, medications, or drawing blood. This distinguishes it from other catheters designed for different purposes, such as central venous access or urinary drainage.

When should a nurse check the patency of a venous access device?

Answer: Before every medication or fluid infusion

Checking the patency of a venous access device before every medication or fluid infusion is crucial for patient safety. This ensures the catheter is correctly positioned within the vein and functional, preventing complications like infiltration or extravasation that can occur if the device is occluded or dislodged. Proactive patency checks confirm safe and effective delivery of therapy.

What should be done if a venous access device becomes occluded?

Answer: Attempt to flush the device with saline or a heparinized solution

If a venous access device becomes occluded, the initial and most appropriate action is to attempt to flush it with saline or a heparinized solution. This gentle maneuver can often dislodge a clot or precipitate, restoring patency without requiring immediate device removal. Only if flushing fails should further interventions, such as device removal, be considered.

What is an important consideration when choosing a venous access device for a patient?

Answer: The expected duration of therapy and patient’s condition

When choosing a venous access device, the expected duration of therapy and the patient's condition are paramount considerations. Long-term therapy or irritating medications may necessitate a central venous catheter, while short-term needs are met by a peripheral IV. The patient's vein health, medical history, and specific treatment plan also guide the selection to ensure optimal and safe access.

Which of the following is a complication of venous access devices?

Answer: Thrombophlebitis

Thrombophlebitis, an inflammation of the vein wall associated with a blood clot, is a common complication of venous access devices. It manifests as pain, redness, warmth, and swelling along the vein, directly resulting from mechanical irritation or infection caused by the catheter. Recognizing this complication is vital for timely intervention and patient comfort.

When should the site of a venous access device be changed?

Answer: Every 48 to 72 hours or as clinically indicated

Peripheral intravenous catheter (PIV) sites should be changed every 48 to 72 hours, or as clinically indicated, to minimize the risk of infection and phlebitis. This guideline helps prevent bacterial colonization and vein irritation associated with prolonged catheter dwell times. However, if any signs of complication like redness, pain, or swelling appear, the site must be changed immediately regardless of the scheduled interval.

Which of the following best describes a central venous catheter (CVC)?

Answer: A catheter placed in a central vein, typically for long-term therapy

A central venous catheter (CVC) is accurately described as a catheter placed in a large central vein, such as the subclavian, jugular, or femoral vein, with its tip typically resting in the superior vena cava. CVCs are primarily used for long-term therapy, administration of irritating medications, rapid fluid resuscitation, and central venous pressure monitoring, differentiating them from peripheral access devices.

What is the appropriate action when a venous access device becomes infected?

Answer: Remove the device and initiate appropriate antimicrobial treatment

If a venous access device becomes infected, the appropriate action is to remove the device and initiate suitable antimicrobial treatment. An infected catheter serves as a direct pathway for pathogens into the bloodstream, making its removal essential to eliminate the source of infection. Prompt antimicrobial therapy is then crucial to treat the systemic infection and prevent further complications.