A patient is transferred from the Emergency Department (ED) to the Intensive Care Unit (ICU) with elevated intracranial pressure (ICP). As part of the nursing assessment, it's crucial to understand the components of the cranial cavity that contribute to ICP. What are the components of the cranial cavity?

A. Obtunded: Obtunded patients show decreased alertness and respond slowly to stimuli, often requiring repeated stimulation to maintain attention. This level of consciousness is more severe than confusion and typically involves reduced awareness.

B. Coma: Coma is a state of deep unconsciousness where the patient is unarousable and unresponsive to external stimuli. It is much more severe than confusion or disorientation and is unlikely in a patient who is still able to interact, even if confused.

C. Stupor: Stupor refers to a condition where the patient is mostly unresponsive and only responds to vigorous or painful stimuli. It is more severe than confusion and involves markedly diminished awareness.

D. Delirium: Delirium is characterized by acute onset of confusion, disorientation, impaired attention, and fluctuating levels of consciousness. It best matches the patient's symptoms of confusion, disorientation, and inability to focus.

E. Mild lethargy: Mild lethargy involves drowsiness and reduced energy but does not typically impair orientation or the ability to focus as severely as seen in this patient.

A. Hemorrhage: Hemorrhage leads to significant blood loss, resulting in decreased blood volume and reduced renal perfusion, which is a common cause of prerenal acute kidney injury (AKI).

B. Cirrhosis: Cirrhosis can cause systemic vasodilation and reduced effective circulating volume, leading to decreased renal blood flow and prerenal failure due to impaired kidney perfusion.

C. Kidney disease: Kidney disease itself is an intrinsic (renal) cause of kidney failure, involving direct damage to the kidney tissue, rather than prerenal failure caused by decreased perfusion.

D. Narrowing of the blood vessels leading to the kidneys: Renal artery stenosis reduces blood flow to the kidneys, causing prerenal failure by impairing kidney perfusion despite adequate circulating volume.