what is the pharmacological action of metformin 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 with heart failure is prescribed digoxin. Which statement by the client indicates an adverse effect of the medication?

Correct answer: D

Rationale: Nausea and loss of appetite are common early signs of digoxin toxicity, indicating an adverse effect of the medication. These symptoms should be reported to the healthcare provider immediately for further evaluation and management.

3. What condition is characterized by the inflammation of the pleura, causing sharp chest pain that worsens with breathing?

Correct answer: A

Rationale: The correct answer is Pleurisy. Pleurisy is the inflammation of the pleura, the lining surrounding the lungs, which causes sharp chest pain that worsens with breathing. Pericarditis (choice B) is the inflammation of the pericardium, the sac around the heart, which typically causes chest pain that worsens when lying down. Endocarditis (choice C) is the inflammation of the inner lining of the heart chambers and valves, leading to symptoms like fever, fatigue, and abnormal heart sounds. Myocarditis (choice D) is inflammation of the heart muscle, which can cause symptoms such as chest pain, fatigue, and shortness of breath.

4. When obtaining a client’s vital signs, the nurse assesses a blood pressure of 134/88 mm Hg. What is the nurse’s best intervention?

Correct answer: D

Rationale: The correct answer is to teach the client lifestyle modifications to decrease blood pressure. A blood pressure reading of 134/88 mm Hg falls within the prehypertension range. The initial approach to managing prehypertension involves lifestyle modifications such as dietary changes, exercise, and stress reduction techniques. Calling the healthcare provider without attempting non-pharmacological interventions first is premature. Reassessing blood pressure at the next follow-up appointment may delay necessary interventions. Administering additional antihypertensive medication is not indicated at this stage as lifestyle modifications are the first line of treatment for prehypertension.

5. A nurse assesses a client who is admitted with an acid-base imbalance. The clients arterial blood gas values are pH 7.32, PaO2 85 mm Hg, PaCO2 34 mm Hg, and HCO3 16 mEq/L. What action should the nurse take next?

Correct answer: Assess clients rate, rhythm, and depth of respiration.

Rationale:

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