what is the pharmacological action of metformin
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Nursing Elites

ATI RN

ATI Pharmacology Proctored Exam 2024

1. What is the pharmacological action of metformin?

Correct answer: D

Rationale: The correct answer is D: Decreases hepatic glucose production. Metformin's primary pharmacological action is to decrease hepatic glucose production, leading to lower blood sugar levels and improved insulin sensitivity in the liver. Choices A, B, and C are incorrect because metformin does not block stimulation of beta1 and beta2 receptors, vasoconstriction, aldosterone, or act in the CNS to produce an anxiolytic effect. Therefore, these options are not reflective of metformin's mechanism of action.

2. A client has a prescription for a Nicotine transdermal patch. Which of the following instructions should the nurse include?

Correct answer: A

Rationale: The correct instruction for a client using a Nicotine transdermal patch is to apply the patch at the same time each day. This helps maintain consistent blood levels of nicotine throughout the treatment period, which can aid in reducing cravings for smoking. Consistency in the application time is essential for the effectiveness of the patch. Choices B, C, and D are incorrect. Removing the patch at bedtime may disrupt the continuous delivery of nicotine, applying the patch to the same location daily can cause skin irritation, and placing the patch over an area with hair may affect its adhesion and absorption.

3. A client has a new prescription for levothyroxine. Which of the following instructions should the nurse include?

Correct answer: C

Rationale: Levothyroxine should be taken on an empty stomach in the morning to enhance its absorption. This timing allows for optimal absorption and effectiveness of the medication. Taking it with food, at bedtime, or with an antacid may interfere with its absorption and reduce its efficacy.

4. A client has a new prescription for Alendronate to treat osteoporosis. Which of the following instructions should the nurse include?

Correct answer: A

Rationale: The correct instruction is to take Alendronate with a full glass of water after rising in the morning. This helps reduce the risk of esophageal irritation, as the medication can cause irritation if not taken correctly. Taking it before bedtime (choice C) can increase the risk of irritation as the individual lies down. Lying down after taking the medication (choice B) can also lead to esophageal irritation. Crushing the tablet (choice D) is not recommended as Alendronate should be taken whole with a full glass of water.

5. A client with breast cancer is being taught about Tamoxifen. Which of the following adverse effects of tamoxifen should the client be informed about?

Correct answer: B

Rationale: Abnormal uterine bleeding is a known adverse effect of tamoxifen. It is important to educate the client about this side effect as those taking tamoxifen are at an increased risk for endometrial cancer. Any abnormal uterine bleeding should be promptly reported and evaluated by healthcare providers to ensure timely management and monitoring. The other options, such as irregular heart rhythm, yellowing of the sclera or dark-colored urine, and difficulty swallowing, are not typically associated with tamoxifen use and are not commonly reported adverse effects. Therefore, they are not the priority adverse effects to inform the client about.

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