A patient diagnosed with chronic renal failure has a magnesium level of 6 mg/dL. Which history data would the nurse evaluate as contributing to this electrolyte imbalance?
1. The patient had an episode of nasal congestion last week and took decongestant.
2. The patient had a recent sprain injury treated with rest and compression wrapping.
3. The patient has been trying to reduce intake of caffeine-containing fluids.
4. The patient has been taking over-the-counter laxative for chronic constipation.
Answer: 4
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