ATI RN
ATI Pharmacology Proctored Exam 2023
1. A healthcare professional is preparing to administer heparin 15,000 units subcutaneously every 12 hours. The available heparin injection is 20,000 units/mL. How many milliliters should the healthcare professional administer per dose?
- A. 0.8 mL
- B. 0.75 mL
- C. 0.5 mL
- D. 1 mL
Correct answer: A
Rationale: To calculate the volume to administer, use the formula: Desired dose / Concentration = Volume to administer. In this case, (15,000 units / 20,000 units/mL) = 0.75 mL. Since the volume needs to be rounded up to the nearest tenth, the correct answer is 0.8 mL. Choice B (0.75 mL) is incorrect because it does not account for rounding up the volume. Choices C (0.5 mL) and D (1 mL) are incorrect as they do not reflect the precise calculation based on the given concentration and desired dose.
2. A client has a new prescription for Docusate Sodium. Which of the following instructions should the nurse include?
- A. Take the medication with a full glass of water.
- B. Expect results within 30 minutes.
- C. Take this medication at bedtime.
- D. Avoid taking this medication with food.
Correct answer: A
Rationale: The correct instruction for a client prescribed Docusate Sodium is to take the medication with a full glass of water. Docusate sodium is a stool softener, and taking it with water helps to soften the stool and make bowel movements easier. Adequate fluid intake is crucial when taking stool softeners to prevent constipation. Choices B, C, and D are incorrect. B is incorrect because the effects of Docusate Sodium may not be immediate, and it may take a couple of days for the stool softener to work. Choice C is incorrect as there is no specific requirement to take this medication at bedtime. Choice D is incorrect because there is no instruction to avoid taking Docusate Sodium with food.
3. A client has ordered a thrombolytic medication for the treatment of CVA. Which type of stroke should not be treated with a thrombolytic?
- A. Hemorrhagic stroke
- B. Thrombotic stroke
- C. Both types can be treated with a thrombolytic
- D. Neither type can be treated with a thrombolytic
Correct answer: A
Rationale: Thrombolytic medications are used to dissolve blood clots. In the case of a hemorrhagic stroke, where there is bleeding in the brain, the use of thrombolytics can worsen the condition by increasing bleeding. Therefore, hemorrhagic strokes should not be treated with thrombolytic medications.
4. A nurse is evaluating teaching for a client who has Rheumatoid Arthritis and a new prescription for Methotrexate. Which of the following statements by the client indicates understanding of the teaching?
- A. I will be sure to return to the clinic at least once a year to have my blood drawn while I'm taking methotrexate.
- B. I will take this medication on an empty stomach.
- C. I'll let the doctor know if I develop sores in my mouth while taking this medication.
- D. I should stop taking oral contraceptives while I'm taking methotrexate.
Correct answer: C
Rationale: Ulcerations in the mouth, tongue, or throat are often the first signs of methotrexate toxicity and should be reported to the provider immediately.
5. A nurse reviewing a client's medical record notes a new prescription for verifying the trough level of the client's medication. Which of the following actions should the nurse take?
- A. Obtain a blood specimen immediately prior to administering the next dose of medication.
- B. Verify that the client has been taking the medication for 24 hours before obtaining a blood specimen.
- C. Ask the client to provide a urine specimen after the next dose of medication.
- D. Administer the medication and obtain a blood specimen 30 minutes later.
Correct answer: A
Rationale: To verify the trough levels of a medication accurately, the nurse should obtain a blood specimen immediately before administering the next dose of the medication. The trough level represents the lowest concentration of the medication in the bloodstream, typically right before the next dose is due. This timing ensures an accurate assessment of the drug's concentration in the body at its lowest point, aiding in determining the drug's effectiveness and potential toxicity levels. Choice B is incorrect because waiting for 24 hours would not provide the trough level. Choice C is incorrect as urine specimens are not used to measure trough levels. Choice D is incorrect as obtaining a blood specimen 30 minutes after administering the medication would not reflect the trough level.
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