A nurse is teaching a client about iron supplementation during pregnancy. Which of the following client statements indicates an understanding of the teaching?

Choice A rationale Consuming milk with iron supplements significantly inhibits iron absorption due to the high calcium content in milk. Calcium competes with iron for absorption sites in the small intestine, forming insoluble complexes that reduce the bioavailability of iron. This would counteract the intended therapeutic effect of the iron supplementation, leading to suboptimal iron levels. Choice B rationale Doubling an iron dose can lead to iron toxicity, which is dangerous, especially during pregnancy. Excessive iron intake can cause gastrointestinal distress, liver damage, and metabolic acidosis. Adhering to the prescribed dosage is crucial for safe and effective supplementation, preventing adverse effects while achieving therapeutic iron levels. Choice C rationale Maintaining adequate fiber intake (normal range 25-30 grams daily) is crucial during iron supplementation. Iron often causes constipation due to its effect on gastrointestinal motility. Dietary fiber adds bulk to stool, promoting regular bowel movements and alleviating constipation, which is a common and uncomfortable side effect of iron therapy. Choice D rationale Vitamin K is essential for blood coagulation, but taking 100 milligrams daily during pregnancy without a specific medical indication is excessive and potentially harmful. The normal recommended daily allowance for vitamin K during pregnancy is much lower, around 90 micrograms. High doses could interfere with anticoagulant medications or have unknown fetal effects.