When monitoring a patient on heparin therapy, what laboratory test is used to assess the effectiveness of the medication?

Prothrombin time (PT)

Activated partial thromboplastin time (aPTT)

International normalized ratio (INR)

Serum potassium level

Answer and Explanation

The Correct Answer is B

A. Prothrombin time (PT) is used to monitor warfarin therapy, not heparin therapy.

B. Activated partial thromboplastin time (aPTT) is the primary laboratory test used to assess the effectiveness of heparin therapy, measuring the time it takes for blood to clot and ensuring therapeutic levels.

C. The International normalized ratio (INR) is also related to warfarin therapy rather than heparin.

D. Serum potassium level is not relevant for assessing heparin therapy but may be monitored for other reasons.

Nursing Test Bank

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Correct Answer is C

Explanation

A. It has a peak effect of 4-6 hours is incorrect; short-acting insulin typically peaks between 2 to 3 hours after administration.

B. It should be given once daily in the evening is incorrect; short-acting insulin is usually administered before meals, not as a once-daily dose.

C. It starts to take effect within 30 minutes to 1 hour after administration is correct; this timing is critical for managing blood glucose levels during meals.

D. It has a duration of action of 24 hours is incorrect; short-acting insulin usually has a duration of about 3 to 6 hours.

A. lorazepam B. phenytoin C. ethosuximide D. gabapentin

Correct Answer is A

Explanation

A. Lorazepam is a benzodiazepine commonly used to manage alcohol withdrawal symptoms, including seizures. It acts quickly to reduce anxiety and seizure activity.

B. Phenytoin is primarily used for seizure control in conditions such as epilepsy but is not the first-line treatment for alcohol withdrawal seizures.

C. Ethosuximide is specifically used for absence seizures and is not effective for alcohol withdrawal.

D. Gabapentin is sometimes used for neuropathic pain but is not indicated for acute alcohol withdrawal or seizure management.

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When monitoring a patient on heparin therapy, what laboratory test is used to assess the effectiveness of the medication?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

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