A nurse is assessing a client prior to administering atenolol. Which of the following findings should prompt the nurse to withhold the medication?

Blood pressure 160/94 mm Hg

Heart rate 46/min

Oxygen saturation 95%

Respiratory rate 18/min

Answer and Explanation

The Correct Answer is B

Choice A reason: Blood pressure 160/94 mm Hg is not a reason to withhold atenolol, as it is a beta-blocker that lowers blood pressure and reduces the workload of the heart. Atenolol is indicated for hypertension, angina, and arrhythmias. The nurse should administer atenolol as prescribed, unless the blood pressure is too low (hypotension).

Choice B reason: Heart rate 46/min is a reason to withhold atenolol, as it is a sign of bradycardia (slow heart rate), which can be a side effect of atenolol. Atenolol can decrease the heart rate by blocking the beta-1 receptors in the heart. The nurse should withhold atenolol if the heart rate is below 60 beats per minute or above 100 beats per minute, and report the finding to the provider.

Choice C reason: Oxygen saturation 95% is not a reason to withhold atenolol, as it is a normal value that indicates adequate oxygenation of the blood. Atenolol does not affect the oxygen saturation or the respiratory function. The nurse should monitor the oxygen saturation regularly, and report any signs of hypoxia (low oxygen level).

Choice D reason: Respiratory rate 18/min is not a reason to withhold atenolol, as it is a normal value that indicates normal breathing. Atenolol does not affect the respiratory rate or the respiratory function. The nurse should monitor the respiratory rate regularly, and report any signs of dyspnea (difficulty breathing).

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Correct Answer is C

Explanation

Choice A reason: Platelets 190,000/mm3 is within the normal range of 150,000 to 450,000/mm3. This result does not indicate a bleeding risk or a need to adjust the warfarin dose.

Choice B reason: Hct 44% is within the normal range of 37% to 47% for females and 42% to 52% for males. This result does not indicate anemia or polycythemia, which could affect the warfarin therapy.

Choice C reason: PT 45 seconds is above the normal range of 11 to 13.5 seconds. This result indicates that the blood is taking too long to clot, which increases the risk of bleeding. The nurse should notify the provider and expect a decrease in the warfarin dose.

Choice D reason: Hgb 16 g/dL is within the normal range of 12 to 16 g/dL for females and 14 to 18 g/dL for males. This result does not indicate anemia or polycythemia, which could affect the warfarin therapy.

A. Black cohosh B. Echinacea C. Feverfew D. Flaxseed

Correct Answer is C

Explanation

Choice A reason: Black cohosh is an herbal supplement that is used to treat menopausal symptoms, such as hot flashes and mood swings. It does not have a significant interaction with warfarin and does not affect the coagulation status of the client.

Choice B reason: Echinacea is an herbal supplement that is used to boost the immune system and prevent or treat common colds and infections. It does not have a significant interaction with warfarin and does not affect the coagulation status of the client.

Choice C reason: Feverfew is an herbal supplement that is used to treat migraines, arthritis, and fever. It has a significant interaction with warfarin and can increase the risk of bleeding and bruising. It can also reduce the effectiveness of warfarin and alter the client's international normalized ratio (INR).

Choice D reason: Flaxseed is an herbal supplement that is used to lower cholesterol, blood pressure, and inflammation. It does not have a significant interaction with warfarin and does not affect the coagulation status of the client.

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A nurse is assessing a client prior to administering atenolol. Which of the following findings should prompt the nurse to withhold the medication?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

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