ATI RN
ATI Pharmacology
1. A healthcare professional is preparing to administer acetaminophen 650 mg PO every 6 hr PRN for pain. The amount available is acetaminophen liquid 500 mg/5 mL. How many mL should the healthcare professional administer per dose?
- A. 6.5 mL
- B. 7 mL
- C. 5 mL
- D. 8 mL
Correct answer: A
Rationale: To calculate the volume to administer: (Desired dose / Concentration) = Volume to administer. In this case, (650 mg / 500 mg) x 5 mL = 6.5 mL. Therefore, the healthcare professional should administer 6.5 mL of acetaminophen per dose to achieve the desired 650 mg dose for pain relief. Choice A is correct because it accurately calculates the volume required based on the concentration of the liquid acetaminophen. Choices B, C, and D are incorrect as they do not reflect the correct calculation based on the concentration of the liquid medication and the desired dose.
2. A client is being discharged with a new prescription for Atenolol. Which of the following instructions should the nurse include?
- A. Take this medication in the morning.
- B. Monitor your heart rate regularly.
- C. Avoid consuming foods high in potassium.
- D. Increase your fluid intake.
Correct answer: B
Rationale: The correct answer is B: 'Monitor your heart rate regularly.' Atenolol is a beta-blocker that can cause bradycardia (slow heart rate). Monitoring the heart rate regularly is crucial to promptly detect any significant decreases. This allows for timely intervention and adjustment of the medication regimen if needed, helping to prevent adverse effects associated with bradycardia. Choices A, C, and D are incorrect. Instructing the client to take the medication in the morning does not address the need for heart rate monitoring. Avoiding foods high in potassium is more relevant for medications like ACE inhibitors or potassium-sparing diuretics. Increasing fluid intake is not directly related to the use of Atenolol.
3. A client receives a local anesthetic of Lidocaine during the repair of a skin laceration. For which of the following adverse reactions should the nurse monitor the client?
- A. Seizures
- B. Tachycardia
- C. Hypertension
- D. Fever
Correct answer: A
Rationale: Seizures are a potential adverse reaction to local anesthetics like Lidocaine. Lidocaine can affect the central nervous system and, in some cases, lead to seizure activity. Therefore, it is important for the nurse to monitor the client for any signs of seizures during and after the administration of Lidocaine.
4. A healthcare professional 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 professional 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 trough levels of a medication, the healthcare professional should obtain a blood specimen immediately before administering the next dose of medication. This timing ensures an accurate representation of the medication's lowest concentration in the bloodstream, which is crucial for therapeutic monitoring and dose adjustments. Choice B is incorrect because waiting 24 hours after taking the medication would not provide an accurate trough level. Choice C is incorrect as urine specimens are not used to measure trough levels. Choice D is incorrect because obtaining a blood specimen 30 minutes after administering the medication would not reflect the trough level, as it is the lowest concentration before the next dose.
5. A healthcare professional is admitting a toddler to the hospital after an Acetaminophen overdose. Which of the following medications should the healthcare professional anticipate administering to this client?
- A. Acetylcysteine
- B. Pegfilgrastim
- C. Misoprostol
- D. Naltrexone
Correct answer: A
Rationale: The correct answer is Acetylcysteine. Acetylcysteine is the antidote for acetaminophen overdose. It works by replenishing glutathione, which is depleted in cases of acetaminophen overdose, thus preventing liver damage. Pegfilgrastim is a medication used to stimulate white blood cell production, misoprostol is a medication used to prevent gastric ulcers, and naltrexone is used in the management of opioid addiction and alcohol dependence, which are not indicated in the scenario described.
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