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:

Light sensitivity is incorrect. Light sensitivity (photophobia) is not typically a direct manifestation of a ruptured cerebral aneurysm. However, it may occur as a secondary symptom due to other neurological disturbances or increased intracranial pressure.

Choice B Reason:

Loss of consciousness is correct. Loss of consciousness is a common manifestation of a ruptured cerebral aneurysm, particularly if the bleeding leads to significant brain injury or compression of vital brain structures.

Choice C Reason:

A dilated pupil is correct. A dilated pupil (mydriasis) may occur as a result of compression of the oculomotor nerve (cranial nerve III) by the expanding hematoma or increased intracranial pressure following a ruptured cerebral aneurysm.

Choice D Reason:

Visual disturbances is correct. Visual disturbances, such as blurred vision, double vision (diplopia), or loss of vision, may occur due to compression of the optic nerve or damage to visual pathways as a result of the hemorrhage.

Choice E Reason:

Nausea and vomiting is correct. Nausea and vomiting are common symptoms associated with a ruptured cerebral aneurysm, often due to irritation of the meninges and increased intracranial pressure resulting from the bleeding.

Choice F Reason:

Numbness on one side of the face is incorrect. Numbness on one side of the face is not typically a direct manifestation of a ruptured cerebral aneurysm. However, it may occur if the hemorrhage affects specific regions of the brain responsible for sensation or if there is associated compression of cranial nerves.

Choice A Reason:

Flail chest is incorrect. Flail chest is a condition characterized by multiple rib fractures, causing instability in the chest wall. While it can lead to respiratory distress, it doesn't directly cause ventilation-perfusion (V/Q) mismatch. Instead, it impairs the mechanics of breathing by compromising chest wall integrity.

Choice B Reason:

Emphysema is a chronic obstructive pulmonary disease (COPD) where the alveolar walls are destroyed, leading to a loss of surface area for gas exchange. This results in areas of the lungs that are well-perfused but poorly ventilated, causing a V/Q mismatch. The damage to alveoli leads to impaired ventilation, while blood flow may still be adequate, leading to hypoxemia (low oxygen levels in the blood).

Choice C Reason:

CHF primarily affects the heart’s ability to pump blood effectively, leading to pulmonary congestion and impaired gas exchange. However, it typically causes diffusion defects rather than a direct ventilation-perfusion mismatch. V/Q mismatch may occur secondary to pulmonary edema, but it’s not the primary mechanism of respiratory failure in CHF.

Choice D Reason:

Guillain-Barré syndrome is incorrect. Guillain-Barré syndrome (GBS) is a neurological disorder that affects the peripheral nervous system, leading to muscle weakness and paralysis. While respiratory muscle weakness can occur in GBS, it doesn't directly cause ventilation-perfusion (V/Q) mismatch. GBS primarily affects nerve function rather than lung function.