Free CRNI Exam Questions That Helps Candidates Pass

Comprehensive and Detailed Explanation: Residual dextrose solution will dilute or alter laboratory results if the sample is drawn while the infusion is running. Stopping the infusion and discarding a small volume clears the catheter of the infusate before the specimen is obtained. Excessive flushing can cause hemolysis, and routine catheter removal solely for sampling is unnecessary. Proper phlebotomy technique is tested under Principles of Practice.

Comprehensive and Detailed Explanation: Patients receiving anticoagulants have an increased risk of hematoma formation and prolonged bleeding. Limiting the number of venipuncture attempts, applying firm pressure after any unsuccessful attempt, and choosing sites away from joints reduce local traumaand bleeding. Large-gauge catheters and prolonged tourniquet times increase vessel injury. These anatomy-and-physiology and special-population considerations are essential components of safe practice within the Principles of Practice domain.

Comprehensive and Detailed Explanation: Tunneled catheters require ongoing assessment of the exit site for signs of infection, dislodgement, or drainage, and the dressing must be inspected for integrity at least every shift. The catheter is not routinely replaced; flushing is performed on a scheduled basis, and the cuff is an intentional stabilizing feature that is never removed. Proper long-term device maintenance is a core Access Devices responsibility.

Comprehensive and Detailed Explanation: Vancomycin doses of 1 g are typically infused over at least 60 minutes to reduce the risk of vancomycin-infusion reaction (red-man syndrome) caused by histamine release. Faster rates increase the likelihood of flushing, pruritus, and hypotension. Rate control is an essential safety consideration for anti-infective therapy within Infusion Therapies.

Comprehensive and Detailed Explanation: A palpable cord with proximal erythema indicates grade 2 or higher phlebitis on standard scales and requires prompt catheter removal to prevent progression. Documentation of the grade supports quality tracking. Continuing the infusion or accelerating the rate worsens vessel injury; antibiotics are not indicated for uncomplicated chemical or mechanical phlebitis. Recognition and management of local complications are essential Principles of Practice skills.