A nurse is teaching a client who has restrictive cardiomyopathy (RCM). Which of the following statements should the nurse include in the client teaching to explain the cause of RCM?

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. Consume foods high in potassium: Potassium deficiency can contribute to certain health issues, but it is not directly linked to hearing loss. However, maintaining a balanced diet rich in nutrients, including potassium, is important for overall health.

B. Increase oral intake of water: Hydration is essential for overall health, but increasing oral intake of water is not specifically associated with decreasing the risk of hearing loss. While staying hydrated is beneficial for various bodily functions, including maintaining proper ear function, it is not a direct preventive measure for hearing loss.

C. Avoid smoking tobacco products: Smoking tobacco products is a significant risk factor for developing hearing loss. Smoking can damage blood vessels and reduce blood flow to the inner ear, leading to hearing impairment. Therefore, advising clients to avoid smoking or quit smoking is an important lifestyle modification to decrease the risk of hearing loss.

D. Limit alcohol to two drinks daily: Excessive alcohol consumption can have detrimental effects on hearing health, including increasing the risk of hearing loss and vestibular dysfunction. Therefore, limiting alcohol intake is recommended to reduce the risk of developing hearing-related problems.