ATI RN
ATI Pharmacology Proctored Exam 2024
1. A healthcare professional is caring for a client who is receiving heparin therapy. Which of the following laboratory tests should the healthcare professional monitor to evaluate the therapeutic effect of heparin?
- A. PT/INR
- B. Platelet count
- C. aPTT
- D. WBC count
Correct answer: C
Rationale: The correct test to monitor the therapeutic effect of heparin is the activated partial thromboplastin time (aPTT). Heparin's action is to prolong the clotting time, and aPTT reflects this effect. Monitoring aPTT helps ensure that the client is within the therapeutic range to prevent clot formation while minimizing the risk of bleeding complications. PT/INR is used to monitor warfarin therapy, platelet count assesses for potential thrombocytopenia, and WBC count evaluates for signs of infection or inflammation, not the therapeutic effect of heparin.
2. A healthcare professional is educating a client about the adverse effects of Metformin. Which of the following adverse effects should the healthcare professional include?
- A. Lactic acidosis.
- B. Hypoglycemia.
- C. Hyperlipidemia.
- D. Weight gain.
Correct answer: A
Rationale: The correct answer is A: Lactic acidosis. Lactic acidosis is a rare but severe side effect of Metformin, particularly in individuals with renal or liver issues. It is crucial for clients taking Metformin to be aware of the symptoms of lactic acidosis, such as muscle pain, weakness, trouble breathing, stomach discomfort, and feeling cold. Choice B, hypoglycemia, is not a common adverse effect of Metformin but can occur when combined with other antidiabetic medications. Choice C, hyperlipidemia, is not a typical adverse effect of Metformin. Choice D, weight gain, is not associated with Metformin use; in fact, Metformin is often associated with weight loss or weight neutrality.
3. A client has a new prescription for Hydrochlorothiazide. Which of the following adverse effects should the nurse monitor?
- A. Hyponatremia
- B. Hyperkalemia
- C. Hypercalcemia
- D. Hypoglycemia
Correct answer: A
Rationale: Corrected Rationale: Hydrochlorothiazide is a diuretic known to cause electrolyte imbalances, particularly hyponatremia (low sodium levels). The nurse should closely monitor the client for signs of hyponatremia by assessing their electrolyte levels. Choice B, Hyperkalemia, is incorrect as hydrochlorothiazide is more likely to cause hypokalemia (low potassium levels) rather than hyperkalemia. Choice C, Hypercalcemia, is incorrect because hydrochlorothiazide is not known to cause increased calcium levels. Choice D, Hypoglycemia, is also incorrect as it is not a common adverse effect of hydrochlorothiazide.
4. When administering the drug senna to a patient, what must a health care provider inform the patient of?
- A. This drug is intended to lower blood pressure and is best used in combination with other antihypertensives
- B. This drug is not intended for long-term use
- C. The patient must limit his/her fiber intake
- D. Advise the patient to change positions slowly to limit the risk of orthostatic hypotension
Correct answer: B
Rationale: The correct answer is B. Senna is a laxative used for short-term relief of constipation, not for long-term use. Choice A is incorrect because senna does not lower blood pressure or require combination with antihypertensives. Choice C is unrelated as there is no need to limit fiber intake with senna. Choice D is incorrect as orthostatic hypotension is not a common concern with senna use.
5. What is the antidote for Warfarin?
- A. Naloxone
- B. Vitamin K
- C. Glucagon
- D. Vitamin B
Correct answer: B
Rationale: The correct antidote for Warfarin is Vitamin K. Warfarin works by inhibiting vitamin K-dependent clotting factors. Administering Vitamin K helps reverse its effects by replenishing these factors. Choices A, C, and D are incorrect. Naloxone is used to reverse opioid overdose, Glucagon is used to treat severe low blood sugar, and Vitamin B is not the antidote for Warfarin.
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