The nurse knows that a common presentation that happens early in HIV infections is:

Choice A rationale

Brown-Sequard injury results in ipsilateral motor function loss due to corticospinal tract damage and contralateral pain/temperature loss from spinothalamic tract disruption, characteristic of this hemisection spinal cord injury.

Choice B rationale

Central cord injury affects cervical spine and hand function but does not exhibit hemisection symptoms like ipsilateral motor loss or contralateral sensory loss. Symptoms vary and commonly include upper limb weakness.

Choice C rationale

Posterior cord injury primarily impacts dorsal column function, resulting in loss of proprioception and vibration sense. Motor and pain/temperature functions are preserved, unlike in Brown-Sequard injury.

Choice D rationale

Anterior cord injury involves ischemic damage to the anterior spinal artery, leading to motor paralysis and pain/temperature loss bilaterally, not ipsilateral and contralateral as described in the question.

Choice A rationale

Restlessness and altered mental status are early signs of increasing intracranial pressure, resulting from cerebral edema compressing neural tissue and reducing oxygen supply to critical brain regions.

Choice B rationale

Widening pulse pressure is a later sign of increased intracranial pressure, indicating significant disruption of autonomic regulation and brainstem function. Early symptoms like restlessness occur first.

Choice C rationale

Fixed and dilated pupils signify severe and advanced intracranial pressure, often indicating brain herniation, which is a critical stage beyond initial compensatory mechanisms.

Choice D rationale

Tachycardia and hypotension are not hallmark signs of raised intracranial pressure. Bradycardia and hypertension align more closely with Cushing's triad, associated with late-stage intracranial hypertension. .