Which condition would cause the nurse to withhold a PRN order for magnesium hydroxide?

A. Hemorrhoids: Magnesium hydroxide may actually be helpful in clients with hemorrhoids, as it softens stools and reduces straining during bowel movements. It is not contraindicated and may even provide symptom relief in these clients. B. Prostatitis: There is no direct interaction between magnesium hydroxide and prostatitis. While bowel function should be monitored, use of this antacid/laxative is not typically restricted based on prostate inflammation. C. Chronic renal failure: Magnesium is excreted through the kidneys, and in clients with chronic renal failure, its use may lead to magnesium toxicity. This can result in lethargy, bradycardia, hypotension, and even cardiac arrest, making this a clear contraindication. D. Cirrhosis: While caution is required in cirrhosis due to risk of hepatic encephalopathy and electrolyte imbalances, magnesium hydroxide may still be used if monitored. It is not an absolute contraindication the way renal failure is.