A nurse is collecting data from a client prior to administering atenolol.
For which of the following findings should the nurse withhold the medication?
Heart rate 50/min.
Respiratory rate 18/min.
Oxygen saturation 95%.
Blood pressure 160/94 mm Hg.
The Correct Answer is A
The correct answer is choice A. Heart rate 50/min.
Choice A rationale:
Atenolol is a beta-blocker that can significantly lower heart rate. A heart rate of 50/min is considered bradycardia (slow heart rate), and administering atenolol could further decrease the heart rate to a dangerously low level. Therefore, the nurse should withhold the medication in this case.
Choice B rationale:
A respiratory rate of 18/min is within the normal range (12-20 breaths per minute) and does not contraindicate the use of atenolol. Therefore, this finding would not require withholding the medication.
Choice C rationale:
An oxygen saturation of 95% is within the normal range (typically 95-100%) and does not contraindicate the use of atenolol. Thus, this finding would not necessitate withholding the medication.
Choice D rationale:
While a blood pressure of 160/94 mm Hg indicates hypertension, atenolol is often prescribed to manage high blood pressure. Therefore, this finding would not require withholding the medication.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A rationale:
Hypertension is not typically associated with low calcium levels. Hypertension is more commonly linked to issues with blood pressure regulation and not calcium levels.
Choice B rationale:
Diaphoresis (excessive sweating) is not a direct symptom of low calcium levels. Low calcium can lead to muscle cramps and tetany, but not sweating.
Choice C rationale:
Muscle tetany is a common manifestation of low calcium levels (hypocalcemia). It results from increased neuromuscular excitability, causing muscle spasms and contractions. A calcium level of 7 mg/dL is below the normal range, and this client is at risk for muscle tetany.
Choice D rationale:
Increased thirst is not a typical symptom of low calcium levels. Symptoms of hypocalcemia are primarily related to neuromuscular and cardiovascular changes, such as muscle tetany and cardiac arrhythmias.
Correct Answer is D
Explanation
Choice A rationale:
A respiratory rate of 9/min and shallow respirations are indicative of hypoventilation, which can lead to an accumulation of carbon dioxide (CO2) in the blood. This condition results in respiratory acidosis (Choice D). In respiratory acidosis, the arterial pH is decreased (acidic) while the PaCO2 (partial pressure of carbon dioxide) is elevated.
Choice B rationale:
Respiratory alkalosis (Choice B) is characterized by a low PaCO2 and an elevated pH due to hyperventilation. Shallow respirations and a respiratory rate of 9/min do not align with this condition, as it typically involves rapid and deep breathing.
Choice C rationale:
Metabolic alkalosis (Choice C) results from a primary excess of bicarbonate (HCO3-) in the blood and is not associated with the given respiratory patterns. Shallow respirations and a low respiratory rate are more likely to lead to an accumulation of CO2, causing respiratory acidosis (Choice D).
Choice D rationale:
The correct answer is choice D. Shallow respirations and a respiratory rate of 9/min indicate hypoventilation, leading to an accumulation of CO2 in the blood. This condition results in respiratory acidosis, where the arterial pH is decreased. The body's compensatory response is to retain bicarbonate to normalize pH, but this can result in an elevated HCO3- level. The primary acid-base imbalance in this case is respiratory acidosis. .
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