A nurse is teaching a student about cerebral edema. The student nurse asks, "What type of cerebral edema is associated with a client who has a stroke?" Which of the following is the best response from the nurse?

Choice A Reason:

Vasogenic cerebral edema is appropriate response. Vasogenic cerebral edema occurs due to disruption of the blood-brain barrier (BBB), leading to leakage of fluid and proteins from the blood vessels into the brain parenchyma. This type of cerebral edema is commonly associated with conditions such as brain tumors, abscesses, and ischemic stroke.

Choice B Reason:

Osmotic cerebral edema is inappropriate response. Osmotic cerebral edema occurs when there is an imbalance of osmotic forces across the blood-brain barrier, leading to the movement of water into the brain cells. This type of cerebral edema can result from conditions such as hyponatremia or the administration of hypertonic solutions.

Choice C Reason:

Cellular cerebral edema is inappropriate response. Cellular cerebral edema involves the swelling of brain cells (neurons and glial cells) due to various insults, such as ischemia, hypoxia, or metabolic disturbances. This type of cerebral edema can occur in conditions such as ischemic stroke or traumatic brain injury.

Choice D Reason:

Interstitial cerebral edema is incorrect response. Interstitial cerebral edema involves the accumulation of fluid within the interstitial spaces of the brain tissue. This type of cerebral edema can occur in conditions such as hydrocephalus, where there is obstruction of cerebrospinal fluid (CSF) flow.

Choice A Reason:

Keeping lights turned to medium level in the evening is incorrect. This intervention is aimed at reducing environmental stimuli, which may be appropriate for some patients with neurological conditions to minimize sensory overload and promote rest. However, it is not a specific intervention for preventing cerebral aneurysm rupture.

Choice B Reason:

Maintaining the head of the bed between 30 and 45° is correct. Keeping the head of the bed elevated can help reduce intracranial pressure and decrease the risk of cerebral aneurysm rupture or rebleeding in patients with aneurysmal subarachnoid hemorrhage. This position promotes venous drainage from the brain and helps prevent increases in intracranial pressure.

Choice C Reason:

Administering hypotonic intravenous solutions is incorrect. Hypotonic intravenous solutions have a lower osmolarity than blood plasma and can lead to cerebral edema, which may exacerbate intracranial pressure and increase the risk of cerebral aneurysm rupture. Isotonic solutions, such as normal saline (0.9% NaCl) or lactated Ringer's solution, are typically preferred for fluid resuscitation and maintenance in patients at risk of cerebral aneurysm rupture.

Choice D Reason:

Reposition the client every shift is incorrect. Repositioning the client every shift helps prevent complications associated with immobility, such as pressure ulcers, pneumonia, and venous thromboembolism. While important for overall patient care, repositioning alone does not directly address the risk of cerebral aneurysm rupture.