ATI RN
ATI Pharmacology Proctored Exam 2019 Quizlet Questions
Question 1 of 5
ACE inhibitors:
Correct Answer: D
Rationale: ACE inhibitors increase bradykinin by blocking its breakdown, not decrease it, so that's false. Hyperkalemia is more common in diabetes due to renal issues, not less, making that false. They're not absolutely contraindicated with NSAIDs, though caution applies, so that's incorrect. They decrease efferent arteriolar resistance, reducing glomerular pressure, a true statement, key in renoprotection. They don't reduce prostaglandins (NSAIDs do). This hemodynamic effect is vital in hypertension and diabetic nephropathy.
Question 2 of 5
The following are potential treatments for malignant hyperthermia:
Correct Answer: A
Rationale: Dantrolene is the drug of choice for malignant hyperthermia, as it reduces calcium release from the sarcoplasmic reticulum.
Question 3 of 5
A fat soluble vitamin that is essential for the normal hepatic biosynthesis of factors required for blood clotting
Correct Answer: D
Rationale: Vitamin K is a fat-soluble vitamin that is essential for the normal hepatic biosynthesis of factors required for blood clotting. These clotting factors are important for the process of blood coagulation, preventing excessive bleeding when we get injured. Vitamin K plays a crucial role in maintaining proper blood clotting function and a deficiency in this vitamin can lead to increased bleeding tendency.
Question 4 of 5
A female client who has a history of seizures went to a healthcare facility to ask the nurse regarding the use of birth control pills while on phenytoin therapy. The nurse correctly states to the client that:
Correct Answer: A
Rationale: Phenytoin induces liver enzymes that increase the metabolism of oral contraceptives, reducing their effectiveness. This increases the risk of unintended pregnancy. Pregnancy is not prohibited, but effective contraception is essential. Discontinuing phenytoin is not recommended without medical advice. Therefore, the nurse should inform the client about the decreased effectiveness of birth control pills.
Question 5 of 5
The patient has a potassium level of 5.9 mEq/L. The nurse is administering glucose and insulin. The patient's wife says, 'He doesn't have diabetes, why is he getting insulin?' What is the best response by the nurse?
Correct Answer: A
Rationale: Hyperkalemia (potassium 5.9 mEq/L) is treated emergently with glucose and insulin, which drive potassium into cells, temporarily lowering serum levels . Insulin facilitates this shift by enhancing cellular uptake, paired with glucose to prevent hypoglycemia—accurate and clear for the wife. Choice B misstates that potassium is excreted via blood sugar; it's redistributed, not eliminated. Choice C compares insulin to Kayexalate (which binds potassium in the gut), but safety isn't the primary rationale. Choice D incorrectly suggests renal excretion, which isn't insulin's role (diuretics or dialysis do that). Choice A explains the mechanism correctly, addressing the wife's confusion with scientific clarity.