Free CRNI Exam Questions That Helps Candidates Pass

Comprehensive and Detailed Explanation: Parenteral nutrition solutions are excellent growth media for bacteria and fungi. Bags are typically limited to 24 hours of hang time (lipid-containing emulsions often 12–24 hours). Prolonged hang time combined with systemic signs of sepsis raises strong suspicion for contaminated infusate or catheter-related bloodstream infection. Immediate discontinuation of thecurrent bag, notification of the provider, and evaluation for infection are required. Infection-related complications of parenteral nutrition are covered under Infusion Therapies.

Comprehensive and Detailed Explanation: Acyclovir can cause crystalluria and nephrotoxicity, especially if the patient is inadequately hydrated or the infusion is given too rapidly. The nurse ensures hydration, communicates laboratory changes, and anticipates ordered adjustments. Accelerating the rate or abrupt permanent discontinuation without evaluation is inappropriate. Safe anti-infective administration is tested under Infusion Therapies.

Comprehensive and Detailed Explanation: After blood sampling from an open-ended PICC, the catheter is flushed with normal saline to clear residual blood, followed by heparin lock solution if ordered by protocol, while maintaining positive pressure to prevent blood reflux into the tip. Sterile water and air are inappropriate. Consistent flushing technique maintains patency and is a fundamental Access Devices skill.

Comprehensive and Detailed Explanation: Edema can obscure veins and increase insertion difficulty. Elevating the extremity and using gentle digital pressure to displace interstitial fluid often improve vein visualization and palpability without causing trauma. Tight tourniquets over edematous tissue can further damage fragile vessels. Lower-extremity sites are generally avoided in adults because of higher thrombosis risk. These site-selection and preparation techniques reflect anatomy-and-physiology knowledge within the Principles of Practice domain.

Comprehensive and Detailed Explanation: Maximal sterile barrier precautions require the inserter and assistant to wear a sterile gown and gloves, cap, and mask, while a full-body sterile drape protects the patient. This comprehensive barrier approach significantly reduces the risk of catheter-related bloodstream infection compared with sterile gloves alone. Skin antisepsis remains mandatory. These infection-prevention practices are explicitly tested within the Principles of Practice domain.