A patient is to receive a beta agonist. Before administration of this medication, which assessment finding would most concern the nurse?
Pulse oximetry reading of 95%
Respiratory rate of 22 breaths per minute
Blood pressure of 100/60 mm Hg
Heart rate of 120 beats/min
The Correct Answer is D
Choice A reason: Pulse oximetry of 95% is near normal and not a major concern for beta agonist administration. Tachycardia is more critical due to cardiac stimulation, so this is incorrect.
Choice B reason: A respiratory rate of 22 is slightly elevated but acceptable in respiratory conditions. Beta agonists target airways, but tachycardia is a greater risk, making this incorrect.
Choice C reason: Blood pressure of 100/60 mm Hg is low, but beta agonists primarily affect heart rate. A pre-existing tachycardia is more concerning contraindication, so this is incorrect.
Choice D reason: A heart rate of 120 beats/min is concerning, as beta agonists increase heart rate, risking arrhythmias. This requires evaluation before administration, making it the correct concern.
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Related Questions
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.
Correct Answer is A
Explanation
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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