ATI RN Custom Exams Set 1

Correct Answer: B

Rationale: The correct answer is B: Vitamin K. Warfarin inhibits the action of vitamin K, which is essential for blood clotting. By interfering with the production of certain clotting factors, warfarin helps prevent blood clots. Choices A, C, and D are incorrect because warfarin primarily affects the vitamin K-dependent clotting factors and not platelets, calcium, or vitamin B12.

Correct Answer: C

Rationale: When conducting a Clinitest for testing urinary glucose levels, it is essential to add the correct amounts of urine and Clinitest reagent as instructed. Adding more water than urine could dilute the sample, leading to inaccurate test results. It's important to follow the correct ratio of drops specified in the instructions for an accurate reading.

Correct Answer: D

Rationale: In a sickle cell crisis, morphine is the preferred analgesic due to its potency and effectiveness in managing severe pain. Choice A is incorrect because aspirin is contraindicated in sickle cell disease due to its potential to cause a further decrease in blood flow. Choice B, Motrin (ibuprofen), is also not the ideal choice as NSAIDs can exacerbate renal complications in sickle cell patients. Choice C, Demerol (meperidine), is not recommended for sickle cell pain management due to its toxic metabolite accumulation which can cause seizures and other complications.

Correct Answer: A

Rationale: Establishing rapport with the client is essential in postoperative care to create a trusting relationship, decrease embarrassment, and improve the client's comfort during assessments. Choice B is incorrect because the lithotomy position is not typically recommended post-hemorrhoidectomy. Choice C is incorrect because milking the tube inserted during surgery is not a standard practice after a hemorrhoidectomy. Choice D is incorrect as digitally dilating the rectal sphincter can cause harm and is not a part of routine post-hemorrhoidectomy care.

Correct Answer: B

Rationale: The correct answer is B: Vitamin K. Warfarin works by inhibiting the action of vitamin K, which is crucial for the synthesis of clotting factors in the blood. By interfering with vitamin K, warfarin decreases the production of these clotting factors, thereby prolonging the time it takes for blood to clot. This is why individuals on warfarin therapy need to monitor their vitamin K intake. Choices A, C, and D are incorrect because warfarin does not directly interfere with platelets, calcium, or vitamin B12.