HESI RN CAT Exit Exam

Correct Answer: C

Rationale: The correct answer is C: Select a large, deep muscle mass. When administering an intramuscular injection with a painful medication volume of 3 ml, selecting a large and deep muscle mass is crucial. This intervention reduces discomfort for the patient and ensures proper absorption of the medication. Choice A is incorrect because instilling the medication quickly can increase discomfort. Choice B is incorrect as inserting the needle slowly may prolong the discomfort. Choice D is incorrect as using a short, small gauge needle may not be suitable for delivering 3 ml of medication effectively into the muscle.

Correct Answer: A

Rationale: The correct answer is A: 'Blow cool air from a hairdryer under the cast.' Blowing cool air can help relieve itching without damaging the cast or causing injury. Choice B, twisting the cast back and forth, can lead to discomfort, skin irritation, or even injury. Choice C, shaking powder into the cast, can create a mess, increase the risk of skin issues, and interfere with proper healing. Choice D, pushing a pencil under the cast edge, is dangerous as it can cause injury to the child's skin or the underlying tissues. Therefore, the safest and most effective option to relieve itching under the cast is to blow cool air from a hair dryer.

Correct Answer: B

Rationale: The correct answer is B: 'It prevents the blood from clotting.' Warfarin works by inhibiting the synthesis of vitamin K-dependent clotting factors in the liver, thereby preventing the formation of blood clots. Choice A is incorrect because warfarin does not dissolve existing blood clots but prevents new ones from forming. Choice C is partially correct but not as specific as choice B in explaining how warfarin works. Choice D is unrelated to the mechanism of action of warfarin and is incorrect.

Correct Answer: B

Rationale: In this scenario, the client with COPD receiving increased oxygen is experiencing oxygen toxicity, leading to lethargy and confusion. Lowering the oxygen rate is the priority action to prevent further harm. Repositioning the nasal cannula, encouraging coughing and deep breathing, and monitoring oxygen saturation are all important interventions, but the immediate concern is to address the oxygen toxicity by lowering the oxygen rate.

Correct Answer: C

Rationale: The correct answer is C, 'Presence of uremic frost.' Increased heart rate, visual disturbances, and decreased mentation are all signs and symptoms indicative of hyperosmolar hyperglycemic nonketotic syndrome (HHNS). Uremic frost, however, is not associated with HHNS but is a clinical finding seen in severe cases of chronic kidney disease. Therefore, the nurse should report the presence of uremic frost to the healthcare provider as a separate concern from HHNS.