Pharmacology Proctored ATI Practice Exam

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Which finding should prompt a nurse to withhold atenolol administration?

  1. Heart rate of 75/min

  2. Blood Pressure 130/85 mmHg

  3. Heart rate 46/min

  4. Blood Pressure 150/90 mmHg

The correct answer is: Heart rate 46/min

Atenolol is a beta-blocker medication used to treat conditions such as hypertension and angina. One of the primary effects of atenolol is to decrease heart rate by blocking beta-1 receptors in the heart. A heart rate of 46/min is bradycardia, which is a significant decrease in heart rate and may be a sign of an adverse reaction to atenolol. Therefore, a heart rate of 46/min should prompt a nurse to withhold atenolol administration to prevent further lowering of the heart rate. The other options, such as a heart rate of 75/min, blood pressure of 130/85 mmHg, or blood pressure of 150/90 mmHg, do not necessarily indicate a need to withhold atenolol administration.

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