what is the action of metformin

ATI RN

ATI Pharmacology Test Bank

1. What is the action of Metformin?

A. Decreasing intestinal glucose absorption
B. Increasing sensitivity to insulin
C. Decreasing hepatic glucose production
D. All of the above

Correct answer: D

Rationale: Metformin exerts its effects by decreasing hepatic glucose production, increasing sensitivity to insulin, and decreasing intestinal glucose absorption. These actions help in lowering blood glucose levels and improving insulin sensitivity in individuals with diabetes.

2. When does regular insulin typically peak?

A. 30 minutes to 2 ½ hours
B. 1 to 3 hours
C. 6 to 14 hours
D. 1 to 5 hours

Correct answer: D

Rationale: Regular insulin usually peaks around 1 to 5 hours after administration. This peak time frame is important to consider when managing blood glucose levels and timing meals to coincide with insulin activity. Choice A, '30 minutes to 2 ½ hours,' is incorrect because regular insulin typically peaks later. Choice B, '1 to 3 hours,' is not the most accurate as the peak for regular insulin can extend beyond 3 hours. Choice C, '6 to 14 hours,' is incorrect as this timeframe is more indicative of long-acting insulins, not regular insulin.

3. A client is to receive Tetracaine before a Bronchoscopy. Which of the following actions should the nurse include in the plan of care?

A. Keep the client NPO until the pharyngeal response returns.
B. Monitor the insertion site for a hematoma.
C. Palpate the bladder to detect urinary retention.
D. Maintain the client on bed rest for 12 hours following the procedure.

Correct answer: A

Rationale: The correct action for the nurse to include in the plan of care is to keep the client NPO until the pharyngeal response returns. Tetracaine can affect the gag reflex, so it is important to prevent aspiration by maintaining the client NPO until the pharyngeal response is normal, which typically takes about 1 hour. Monitoring for the return of the gag reflex is crucial to prevent complications from aspiration during the first oral intake after the procedure. Choices B, C, and D are incorrect because they are not directly related to the effects of Tetracaine or the bronchoscopy procedure.

4. A healthcare professional is reviewing the medical record of a client with a new prescription for Epoetin Alfa. Which of the following findings should the professional report to the provider?

A. The client has a history of hypertension.
B. The client has a hemoglobin level of 10 g/dL.
C. The client has a history of chronic kidney disease.
D. The client has a blood pressure of 140/90 mm Hg.

Correct answer: C

Rationale: The correct answer is C. Chronic kidney disease is a contraindication for the use of Epoetin Alfa because it can worsen hypertension, increase the risk of cardiovascular events, and lead to adverse outcomes. Epoetin Alfa is used to treat anemia by stimulating red blood cell production, but in the presence of chronic kidney disease, it can exacerbate hypertension and contribute to cardiovascular complications. Choices A, B, and D are not directly related to the contraindication of Epoetin Alfa in the presence of chronic kidney disease.

5. Which of the following drugs has a therapeutic effect that prevents thromboembolic events?

A. Warfarin
B. Amlodipine
C. Nitroglycerin
D. Clopidogrel

Correct answer: A

Rationale: The correct answer is Warfarin. Warfarin is an anticoagulant medication that helps prevent thromboembolic events by inhibiting the formation of blood clots. It is commonly used to reduce the risk of strokes or heart attacks in patients at risk for thrombosis.