A nurse is providing education to a client who is scheduled for a left knee arthroplasty. Which of the following statements regarding informed consent indicates client understanding of the teaching?

Choice A reason: Taking diuretics with the evening meal increases nighttime urination, worsening urge incontinence by stimulating bladder activity during sleep. Diuretics should be taken earlier (e.g., morning) to align with daytime voiding schedules, reducing urgency episodes. This instruction is counterproductive for bladder retraining, making it inappropriate.
Choice B reason: Planning to urinate every 3 hours while awake establishes a scheduled voiding regimen, a key component of bladder retraining. This helps condition the bladder to delay urgency, reducing involuntary contractions and improving control. It aligns with evidence-based strategies for managing urge incontinence, making it the correct instruction.
Choice C reason: Limiting fluid intake to 1 liter per day risks dehydration and concentrated urine, which can irritate the bladder and worsen urge incontinence. Adequate hydration (2-3 L/day) supports bladder health and retraining by maintaining normal urine volume, making this instruction harmful and incorrect.
Choice D reason: Performing Kegel exercises once daily is insufficient for effective bladder retraining. Multiple daily sets (e.g., 3-4 times) strengthen pelvic floor muscles, improving bladder control. This frequency is too low to achieve therapeutic benefits for urge incontinence, making it less effective than scheduled voiding.

Choice A reason: Decreasing fluid intake to firm stools is incorrect, as adequate hydration (2-3 L/day) is essential to prevent constipation, especially with opioids like oxycodone, which slow intestinal motility. Low fluid intake hardens stools, exacerbating constipation risk by reducing water content in the colon, indicating a misunderstanding of prevention strategies.
Choice B reason: Increasing dietary fiber intake (25-35 g/day) adds bulk to stools, stimulating peristalsis and counteracting opioid-induced slowed motility. Soluble and insoluble fiber, found in fruits, vegetables, and whole grains, promotes regular bowel movements. This statement reflects correct understanding of dietary measures to prevent constipation during opioid therapy.
Choice C reason: Taking a laxative only when constipated is reactive, not preventive. Opioids like oxycodone commonly cause constipation by reducing peristalsis via mu-opioid receptors in the gut. Prophylactic use of stool softeners or laxatives is recommended to maintain regular bowel movements, making this statement incorrect as it lacks a preventive approach.
Choice D reason: Exercising less to conserve energy worsens constipation, as physical activity stimulates intestinal motility, countering opioid-induced slowing. Regular movement, like walking, promotes bowel function by enhancing peristalsis and blood flow to the gut. This statement indicates a misunderstanding, as reduced activity increases constipation risk.