A nurse is preparing to administer blood to a client. The unit of blood on hand is type B, and the client has type AB blood. Which of the following actions should the nurse take?

Choice A Reason: This choice is incorrect because slowing the rate to 50 mL/hr may not be enough to prevent cerebral edema, which is a common complication of head injury. Cerebral edema is a swelling of the brain tissue due to increased fluid accumulation. It can cause increased intracranial pressure (ICP), which can lead to brain damage or death. Therefore, the nurse should limit the fluid intake of the client with head injury to avoid worsening the condition.

Choice B Reason: This choice is incorrect because increasing the rate to 250 mL/hr may cause fluid overload, which can also increase the ICP and worsen the cerebral edema. Fluid overload is a condition in which the body has too much fluid, which can impair the function of the heart, lungs, and kidneys. Therefore, the nurse should avoid giving too much fluid to the client with head injury.

Choice C Reason: This choice is correct because slowing the rate to 20 mL/hr may help to maintain adequate hydration and electrolyte balance, while preventing fluid overload and cerebral edema. This is a conservative approach that can be used until the client's neurological status and ICP are assessed and monitored.

Choice D Reason: This choice is incorrect because continuing the rate at 125 mL/hr may not be appropriate for the client with head injury, depending on their individual needs and condition. The nurse should adjust the fluid rate according to the client's vital signs, urine output, serum osmolality, and ICP. Therefore, the nurse should not assume that this rate is optimal for the client without further evaluation.

Choice A Reason: This is incorrect because cognitive impairment that decreases over several months post-injury is more likely to occur in a client who has a diffuse axonal injury, which is a widespread damage to the brain's white mater.

Choice B Reason: This is incorrect because neurologic deficits that increase up to 2 weeks post-injury are more likely to occur in a client who has a subdural hematoma, which is a collection of blood between the dura and the arachnoid membranes.

Choice C Reason: This is incorrect because a change in the level of consciousness that develops over 48 hr is more likely to occur in a client who has an intracerebral hematoma, which is a collection of blood within the brain tissue.

Choice D Reason: This is correct because a lucid period followed by an immediate loss of consciousness is a typical manifestation of an epidural hematoma, which is a collection of blood between the skull and the dura. The lucid period occurs when the initial bleeding stops and the client regains consciousness. The immediate loss of consciousness occurs when the bleeding resumes and causes increased intracranial pressure.