a nurse is reviewing laboratory results for a client who is receiving heparin via continuous iv infusion which of the following results indicates that

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ATI Pharmacology Test Bank

1. A healthcare professional is reviewing laboratory results for a client who is receiving heparin via continuous IV infusion. Which of the following results indicates that the heparin infusion should be increased?

A. aPTT of 90 seconds
B. Platelet count of 150,000/mm³
C. INR of 1.0
D. Hgb of 15 g/dL

Correct answer: A

Rationale: An aPTT of 90 seconds is above the therapeutic range for heparin, which typically falls between 60-80 seconds. This indicates that the current heparin dose is too high, and the infusion rate should be decreased to avoid excessive anticoagulation and the risk of bleeding. Monitoring aPTT is crucial in adjusting heparin therapy to maintain it within the therapeutic range.

2. A client taking nitroglycerin (Nitrostat) complains of a headache. Which conclusion is most appropriate by the nurse?

A. A headache indicates a serious allergic reaction to nitroglycerin.
B. The client will not have a headache if the nitroglycerin is taken with a high-fat meal.
C. Nitroglycerin does not cause a headache.
D. The most common side effect of nitroglycerin is a headache.

Correct answer: D

Rationale: Nitroglycerin is known to cause headaches as a common side effect due to its vasodilatory properties. It dilates blood vessels, which can lead to headaches. While a headache can indicate other serious conditions, the most common association with nitroglycerin use is a headache. It is crucial for the nurse to recognize this side effect and provide appropriate education and support to the client.

3. A healthcare professional is reviewing a new prescription for Ondansetron 4 mg PO PRN for nausea and vomiting for a client who has Hyperemesis Gravidarum. The healthcare professional should clarify which of the following parts of the prescription with the provider?

A. Name
B. Dosage
C. Route
D. Frequency

Correct answer: D

Rationale: The prescription provided includes the medication name, dosage, and route of administration. However, it lacks information about the frequency or timing of the medication administration. In this case, it is crucial to clarify the frequency with the provider to ensure the safe and effective use of the medication for the client with Hyperemesis Gravidarum.

4. What does it mean when a medication has a half-life?

A. It only lasts for 30 minutes after the medication is given
B. How long it takes for half of the dose to be eliminated from the bloodstream
C. It is the peak of how effective the medicine is
D. Drug is greatly reduced before it reaches the systemic circulation

Correct answer: B

Rationale: When a medication has a half-life, it refers to the time it takes for half of the dose to be eliminated from the bloodstream. This parameter is crucial in understanding the duration of action and dosing intervals for medications in clinical practice. Choice A is incorrect as the half-life is not about how long the medication lasts but about elimination from the body. Choice C is incorrect because the half-life is not about the peak effectiveness of the medicine. Choice D is incorrect as it does not accurately define the concept of half-life.

5. Which of the following conditions is not treated with Lansoprazole?

A. Zollinger-Ellison syndrome
B. Gastritis
C. Hypertension
D. Reflux

Correct answer: C

Rationale: Lansoprazole is a proton pump inhibitor used to treat conditions related to excessive stomach acid production, such as Zollinger-Ellison syndrome, gastritis, and reflux. However, it is not indicated for the treatment of hypertension, which is managed using antihypertensive medications. Therefore, the correct answer is C: Hypertension.