Which of the following medications may be used to reduce cerebral edema?

Choice A: Return to hospital immediately if patient is having severe headache or vomiting is correct because it can indicate increased intracranial pressure, bleeding, swelling, or infection in the brain. These are serious complications that can cause permanent damage or death. The patient and family should seek medical atention as soon as possible and not wait for other symptoms to appear.

Choice B: Return to hospital immediately for changes in level of consciousness is correct because it can also indicate worsening brain injury or complications from a head injury. Changes in level of consciousness can include confusion, drowsiness, agitation, or loss of awareness. The patient and family should monitor the patient's mental status and alertness and report any changes to the doctor.

Choice C: Call ambulance if unable to arouse patient is correct because it can mean that the patient has lost consciousness or is in a coma. This is a medical emergency that requires immediate intervention and resuscitation. The patient and family should not atempt to move or transport the patient by themselves but call for professional help.

Choice D: All of the above are correct because they are important instructions for the patient and family to follow when discharging patient home following a head injury. They can help prevent further harm or complications and ensure prompt treatment and recovery. The nurse should educate the patient and family about these instructions and provide them with writen information and contact numbers.

Choice A: Sepsis is a serious infection that occurs when the body's immune system overreacts to an injury or illness. It can cause organ failure and death. People with spinal cord injury are more prone to sepsis because they may have impaired bladder and bowel function, skin breakdown, or reduced sensation that can lead to infections.

Choice B: Pulmonary embolism is a blockage of an artery in the lungs by a blood clot. It can cause chest pain, shortness of breath, and death. People with spinal cord injury are more at risk of pulmonary embolism because they may have reduced mobility, blood circulation, or breathing capacity that can promote blood clot formation.

Choice C: Pneumonia is an inflammation of the lungs caused by bacteria, viruses, or fungi. It can cause fever, cough, and difficulty breathing. People with spinal cord injury are more susceptible to pneumonia because they may have weakened cough reflex, impaired lung function, or aspiration of food or saliva into the lungs.

Choice D: All of the above are major causes of death related to spinal cord injury. They can occur separately or together and can be prevented or treated with proper medical care and lifestyle modifications.