A nurse is caring for a client who has a closed head injury. In which of the following positions should the nurse place the client?

Choice A: This is incorrect because applying petroleum jelly to the client's nares can interfere with oxygen delivery and cause skin breakdown. The nurse should use water-soluble lubricant or saline spray to moisten the nares and prevent dryness from oxygen therapy.

Choice B: This is correct because initiating fall precautions can prevent injury and complications for the client who has aspirated pneumonia and hypoxia. The client may have altered mental status, weakness, or dizziness due to hypoxia, infection, or medications. The nurse should use bed alarms, side rails, and assistive devices as needed.

Choice C: This is incorrect because maintaining the client in a supine position can worsen hypoxia and pneumonia by decreasing lung expansion and increasing secretions. The nurse should elevate the head of the bed at least 30 degrees and encourage frequent position changes to improve ventilation and drainage.

Choice D: This is incorrect because implementing contact precautions is not indicated for the client who has aspirated pneumonia and hypoxia. Aspirated pneumonia is caused by inhalation of foreign material into the lungs, not by transmission of microorganisms from person to person. The nurse should use standard precautions and droplet precautions if the client has a cough or sputum production.

Choice A: This is incorrect because taking iron supplement with an antacid can reduce its absorption and effectiveness. The client should take iron supplement on an empty stomach or with a source of vitamin C to enhance its absorption.

Choice B: This is incorrect because drinking liquid iron supplement undiluted can stain the teeth and cause irritation to the mouth and throat. The client should dilute liquid iron supplement with water or juice and drink it through a straw.

Choice C: This is correct because increasing fiber intake while taking iron supplement can help prevent constipation, which is a common side effect of iron supplementation. The client should also drink plenty of fluids and exercise regularly to promote bowel movements.

Choice D: This is incorrect because notifying the doctor if stools turn black is not necessary as it is a normal and harmless effect of iron supplementation. The client should only notify the doctor if stools are tarry, bloody, or have a foul odor, which can indicate gastrointestinal bleeding.