Free CRNI Exam Questions That Helps Candidates Pass

Comprehensive and Detailed Explanation: Intravenous calcium can increase the risk of digoxin toxicity and serious arrhythmias. Therefore administration must be especially slow and accompanied by close cardiac monitoring in patients receiving digoxin. Rapid infusion, mixing the two drugs, or omitting monitoring increases danger. Safe electrolyte administration in the presence of interacting medications is a core Infusion Therapies competency.

Comprehensive and Detailed Explanation: Each entry into a multi-dose vial requires fresh disinfection of the septum. Vials must be dated and discarded according to manufacturer and institutional beyond-use times. Leaving needles in place or unrestricted sharing increases contamination risk. Aseptic medication preparation is a core infection-prevention practice within Principles of Practice.

Comprehensive and Detailed Explanation: Administration of phosphate can cause a rapid drop in serum calcium as calcium-phosphate complexes form. Therefore both calcium and phosphate levels must be evaluated before and during therapy to avoid hypocalcemia and metastatic calcification. Other laboratory values are relevant to overall care but are not the primary concern for this specific electrolyte. Safe electrolyte replacement is a core Infusion Therapies competency.

Comprehensive and Detailed Explanation: Aseptic technique during medication preparation includes hand hygiene, disinfection of vial septa, and use of sterile, single-patient syringes and needles. Reusing syringes, even with needle changes, risks blood-borne pathogen transmission. Batch preparation and prolonged bedside storage increase contamination and medication-error risk. These principles ofinfection prevention and safe medication handling are core components of the Principles of Practice domain.

Comprehensive and Detailed Explanation: Local warmth produces vasodilation, improving vein size, visibility, and palpability, thereby increasing first-attempt success and reducing trauma. Prolonged tight tourniquet application can cause capillary rupture and hematoma, especially in patients with fragile vessels. Larger-gauge catheters increase mechanical injury, and arterial puncture is never an acceptable alternative for routine intravenous therapy. These site-preparation techniques reflect anatomy-and-physiology knowledge within the Principles of Practice domain.