A nurse is assessing a client who is recovering from subarachnoid hemorrhage following a fall. Which of the following medications should the nurse understand is a potential reason for the fall? (Select All that Apply.)

A. "Vision changes occur when blood vessels leak fluid or blood under a portion of the retina": This statement describes a symptom of diabetic retinopathy, not open-angle glaucoma. In open-angle glaucoma, vision changes primarily result from increased intraocular pressure (IOP) due to impaired drainage of aqueous humor, not leakage of fluid or blood under the retina.

B. "Vision changes occur when the cloudy lens alters the passage of light through the eye": This statement describes a symptom of cataracts, not open-angle glaucoma. Cataracts involve clouding of the lens inside the eye, which affects the passage of light and leads to visual disturbances. Open-angle glaucoma, however, primarily affects the optic nerve and visual field due to increased intraocular pressure.

C. "Vision changes occur when retinal tissue pulls away from the blood vessels in the eye": This statement describes a symptom of retinal detachment, not open-angle glaucoma. Retinal detachment occurs when the retina detaches from the underlying layers of the eye, leading to vision changes and potentially vision loss. Open-angle glaucoma, on the other hand, primarily involves increased intraocular pressure and optic nerve damage.

D. "Vision changes occur when pressure in the eye is increased due to a decrease of aqueous humor": This statement is accurate. In open-angle glaucoma, vision changes occur due to increased intraocular pressure resulting from inadequate drainage of aqueous humor from the eye. This increased pressure can lead to damage of the optic nerve, resulting in peripheral vision loss and potentially blindness if left untreated.

A. Pooling of blood and edema around the eyes: Basilar skull fractures can lead to leakage of cerebrospinal fluid (CSF) into the surrounding tissues, resulting in periorbital ecchymosis, also known as raccoon eyes, due to pooling of blood and edema around the eyes. This finding is characteristic of basilar skull fractures and is caused by disruption of the meninges and subsequent CSF leakage into the soft tissues of the face.

B. Ability to recall how the injury occurred: Memory loss regarding the events surrounding the injury, known as post-traumatic amnesia, is common with basilar skull fractures. This amnesia occurs due to the impact of the injury on the brain and may involve retrograde amnesia (loss of memory of events leading up to the injury) and anterograde amnesia (loss of memory of events occurring after the injury).

C. Bruising over the mastoid process: Bruising over the mastoid process, known as Battle sign, is associated with basilar skull fractures. Battle sign results from blood accumulation (hematoma) in the mastoid region behind the ear due to fracture-related injury to the middle meningeal artery or other blood vessels. This finding typically develops 24-48 hours after the injury.

D. Chvostek’s sign: Chvostek's sign is a clinical manifestation of hypocalcemia, not basilar skull fractures. It is elicited by tapping the facial nerve (facial nerve spasm) and is indicative of neuromuscular irritability due to decreased calcium levels. Chvostek's sign is not directly related to basilar skull fractures.