The nurse should monitor for which potential clinical manifestation after administering furosemide (Lasix)?

Decreased blood pressure

Decreased temperature

Decreased pulse

Decreased respiratory rate

Answer and Explanation

The Correct Answer is A

Choice A reason: Furosemide, a loop diuretic, reduces blood volume, often lowering blood pressure. Monitoring for hypotension is critical to prevent dizziness or shock, making this the correct manifestation to observe.

Choice B reason: Decreased temperature is not a common effect of furosemide, which primarily affects fluid balance. Blood pressure changes are more relevant, so this is incorrect.

Choice C reason: Furosemide may increase heart rate due to volume loss, not decrease pulse. Hypotension is a primary concern, making this incorrect for the expected manifestation.

Choice D reason: Decreased respiratory rate is unrelated to furosemide, which may improve breathing in heart failure but not slow respiration. Blood pressure is key, so this is incorrect.

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Correct Answer is D

Explanation

Choice A reason: Respiratory alkalosis involves low PaCO2 (<35 mm Hg) due to hyperventilation, raising pH. Here, pH is 7.31 (acidic), PaCO2 is 41 mm Hg (normal), and HCO3- is 20 mEq/L (low), indicating a metabolic cause, not respiratory, making this choice incorrect.

Choice B reason: Respiratory acidosis requires elevated PaCO2 (>45 mm Hg), lowering pH. With PaCO2 at 41 mm Hg (normal) and low HCO3- (20 mEq/L), the acidosis stems from reduced bicarbonate, not CO2 retention, ruling out respiratory acidosis and making this choice incorrect.

Choice C reason: Metabolic alkalosis involves high HCO3- (>26 mEq/L) and elevated pH. Here, pH is 7.31 (acidic) and HCO3- is 20 mEq/L (low), indicating acidosis, not alkalosis. The low bicarbonate points to a metabolic cause, making this choice incorrect for the ABG values.

Choice D reason: pH 7.31 (acidic), PaCO2 41 mm Hg (normal), and HCO3- 20 mEq/L (low) indicate metabolic acidosis, likely from conditions like diabetic ketoacidosis or lactic acidosis. No respiratory compensation (normal PaCO2) confirms uncompensated metabolic acidosis, making this the correct choice for the imbalance.

A. It directly activates receptors to affect a specific physiologic process. B. It prevents receptor activation to affect a specific physiologic process. C. It directly activates receptors to affect many physiologic processes. D. It prevents receptor activation to affect many physiologic processes.

Correct Answer is C

Explanation

Choice A reason: Nonselective agonists activate multiple receptors, not specific ones, leading to widespread effects. Specific processes are targeted by selective agonists, so this is incorrect for nonselective drugs.

Choice B reason: Nonselective agonists activate, not prevent, receptors. Prevention is the role of antagonists, so this is incorrect for a nonselective agonist’s mechanism of action.

Choice C reason: Nonselective agonists activate multiple receptor types, affecting many physiologic processes (e.g., epinephrine). This broad action is their hallmark, making it the correct choice for the drug’s effect.

Choice D reason: Preventing receptor activation describes antagonists, not agonists. Nonselective agonists stimulate multiple processes, so this is incorrect for the drug’s pharmacological action.

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The nurse should monitor for which potential clinical manifestation after administering furosemide (Lasix)?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

Name the imbalance using the following Arterial Blood Gas (ABG) values: pH 7.31, PaCO2 41, HCO3- 20

Correct Answer is D

Explanation

A nurse is preparing to administer a medication and learns that it is a nonselective agonist. What does the nurse understand about this drug?

Correct Answer is C

Explanation

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