A nurse is caring for a client scheduled to undergo an esophagogastroduodenoscopy. What action should the nurse take in preparation for the procedure?

Choice A rationale

Oxybutynin works by relaxing the muscles in the bladder. This helps decrease muscle spasms and improve the ability to control urination, thereby reducing the frequency of urination.

Therefore, this choice is correct.

Choice B rationale

Oxybutynin does not block the nervous system impulse to produce urine. It works primarily by relaxing the bladder muscles. Therefore, this choice is incorrect.

Choice C rationale

Oxybutynin does not reduce the rate at which the kidneys filter waste. Its primary action is on the bladder muscles. Therefore, this choice is incorrect.

Choice D rationale

Oxybutynin does not decrease the sensitivity of the urethral sphincter. Its main effect is to relax the bladder muscles. Therefore, this choice is incorrect.

Comparing the current blood pressure reading to the preoperative value is the first step the nurse should take. This will help determine if the patient’s blood pressure has significantly dropped, which could indicate hypovolemia or shock.

Choice B rationale

Covering the patient with a warm blanket may be helpful if the patient is feeling cold or showing signs of hypothermia, but it would not address the underlying cause of the low blood pressure.

Choice C rationale

Increasing the IV flow rate might be necessary if the patient is hypovolemic, but this decision should be based on additional assessment data and physician orders.

Choice D rationale

Reassuring the patient is important, but it should not be the first action. The nurse needs to assess and address the cause of the low blood pressure.