A nurse in a provider's office is talking with a client who takes oxybutynin. The client asks why he does not urinate as often. Which of the following information should the nurse include about the action of oxybutynin?

The medication reduces the rate at which the kidneys filter waste.

The medication decreases the sensitivity of the urethral sphincter.

The medication prevents the bladder muscles from involuntarily contracting.

The medication blocks the nervous system impulse to produce urine.

Answer and Explanation

The Correct Answer is C

A. The medication reduces the rate at which the kidneys filter waste: This is incorrect as oxybutynin does not affect kidney function or the rate at which kidneys filter waste.
B. The medication decreases the sensitivity of the urethral sphincter: This is incorrect because oxybutynin primarily affects bladder muscle contraction, not the sensitivity of the urethral sphincter.
C. The medication prevents the bladder muscles from involuntarily contracting: This is correct as oxybutynin is an anticholinergic medication that reduces involuntary bladder contractions, leading to less frequent urination.
D. The medication blocks the nervous system impulse to produce urine: This is incorrect because oxybutynin works by blocking the action of acetylcholine in the bladder, not by blocking impulses to produce urine.

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Correct Answer is A

Explanation

A. Increase the IV flow rate: This is correct as the client’s low blood pressure could indicate hypovolemia. Increasing the IV flow rate can help improve blood volume and blood pressure, addressing a potential cause of hypotension.
B. Cover the client with a warm blanket: While this could help if the client is hypothermic, it does not address the immediate issue of low blood pressure.
C. Compare the reading to the preoperative value: While this can provide context, it does not directly address the current low blood pressure situation.
D. Reassure the client: Reassuring the client is important but does not address the urgent issue of low blood pressure.

A. Use the client's left arm to obtain blood samples. B. Keep both arms below the level of the client's heart. C. Limit range-of-motion exercises with the affected arm. D. Obtain blood pressure readings using the client's right arm.

Correct Answer is A

Explanation

A. Use the client's left arm to obtain blood samples: This is correct as using the arm on the opposite side of the mastectomy helps avoid additional stress or injury to the affected arm, which can help prevent lymphedema.
B. Keep both arms below the level of the client's heart: This is not recommended as elevating the affected arm can help reduce swelling and promote lymphatic drainage.
C. Limit range-of-motion exercises with the affected arm: This is incorrect as range-of-motion exercises are important to prevent stiffness and promote circulation, which helps reduce the risk of lymphedema.
D. Obtain blood pressure readings using the client's right arm: This is incorrect as obtaining blood pressure on the affected side could increase the risk of lymphedema.

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A nurse in a provider's office is talking with a client who takes oxybutynin. The client asks why he does not urinate as often. Which of the following information should the nurse include about the action of oxybutynin?

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