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. Diabetes mellitus: An inverse association between diabetes mellitus (DM) and abdominal aortic aneurysm (AAA) risk hasbeen reported. Apart from a lower AAA prevalence among patients with vsthose without DM, there isdata showing that DM may exert a protective role on aneurysmal growth in patients with small AAAs, thus decreasing the risk of rupture. As atherosclerosis has almost the same risk factors as aneurysms, the decreased AAA prevalence in patients with DM may indicate that atherosclerosis is an associated feature and not a cause of the aneurysms.

B. Total cholesterol 170 mg/dL (less than 200 mg/dL): While elevated total cholesterol is a risk factor for cardiovascular disease, it is not specifically listed as a risk factor for abdominal aortic aneurysm (AAA). However, dyslipidemia, including elevated total cholesterol levels, can contribute to the development of atherosclerosis, which is a risk factor for AAA.

C. HDL cholesterol 65 mg/dL (male greater than 45 mg/dL; female greater than 55 mg/dL): High-density lipoprotein (HDL) cholesterol levels greater than 65 mg/dL are not listed as a risk factor for abdominal aortic aneurysm (AAA). However, low levels of HDL cholesterol are associated with an increased risk of cardiovascular disease, which may indirectly contribute to the development of AAA through the promotion of atherosclerosis.

D. Smoking cigarettes: Smoking cigarettes is a significant modifiable risk factor for abdominal aortic aneurysm (AAA). Smoking damages the walls of blood vessels, promotes inflammation, and accelerates the development of atherosclerosis, increasing the risk of AAA formation and rupture.

E. Family history of aneurysm: A family history of aneurysm, particularly abdominal aortic aneurysm (AAA), is a risk factor for developing AAA. Genetic factors can predispose individuals to the development of aneurysms, and a positive family history increases the likelihood of AAA occurrence.

A) "Vision changes occur when pressure in the eye is increased due to a decrease of aqueous humor." This statement describes a mechanism associated with glaucoma, not cataracts. In cataracts, vision changes occur due to the opacity or cloudiness of the lens, not changes in intraocular pressure.

B) "Vision changes occur when blood vessels leak fluid or blood under a portion of the retina." This statement describes a mechanism associated with retinal diseases like diabetic retinopathy, not cataracts. In cataracts, the lens becomes cloudy, affecting the passage of light through the eye.

C) "Vision changes occur when the cloudy lens alters the passage of light through the eye." This statement is correct. Cataracts cause the lens of the eye to become cloudy, which interferes with the passage of light through the eye. This results in vision changes such as blurred vision, glare, and difficulty seeing in low light conditions.

D) "Vision changes occur when retinal tissue pulls away from the blood vessels in the eye." This statement describes a mechanism associated with retinal detachment, not cataracts. In cataracts, the lens becomes opaque, but the retinal tissue remains intact.