A client, who has tested positive for human immunodeficiency virus (HIV), now presents with a CD4+ count of less than 200 cells/mm and pneumocystic pneumonia.
A normal range for a CD4+ count is 500-1500 cells/mm.
How would the nurse evaluate these findings? The client:

Choice A rationale

Subarachnoid hemorrhage is less likely given the sudden decrease in consciousness. This type of injury typically results in severe headache or focal neurological deficits, not rapid mental decline.

Choice B rationale

Diffuse axonal injury usually presents with persistent unconsciousness rather than sudden deterioration. It results from widespread shearing forces and is less likely with the reported history.

Choice C rationale

Epidural hematoma often presents with a lucid interval followed by sudden neurological decline, as described in this case. Rapid accumulation of blood between the dura and skull can compress brain tissue.

Choice D rationale

Subdural hematoma tends to cause gradual neurological deterioration rather than a sudden decrease in Glasgow Coma Scale. This occurs due to slower venous bleeding. .

Choice A rationale

The latent period of HIV includes asymptomatic phases when the CD4+ count remains above 200 cells/mm. Pneumocystic pneumonia and low CD4+ counts signify progression beyond latent HIV.

Choice B rationale

HIV-positive status reflects infection presence, but it does not confirm AIDS unless CD4+ count drops below 200 cells/mm and opportunistic infections occur, such as pneumocystic pneumonia.

Choice C rationale

AIDS is diagnosed when CD4+ count decreases below 200 cells/mm, coupled with opportunistic infections. Pneumocystic pneumonia indicates a weakened immune system due to advanced disease.

Choice D rationale

Seroconversion marks the initial immune response to HIV infection with detectable antibodies but occurs before CD4+ counts decline significantly and opportunistic infections appear.