A nurse assesses an audible grating sound (crepitus) when a client with osteoarthritis moves his knees. What is the cause of this sound?

Choice A reason: Once the tissue has necrosed from high pressure, it does not regenerate is the best explanation, because it describes the mechanism and outcome of glaucoma. Glaucoma is a condition that causes increased intraocular pressure, which damages the optic nerve and the retina, the tissues that are responsible for transmitting and processing visual information. Once these tissues are necrosed, or dead, they do not regenerate, or grow back, resulting in irreversible vision loss.

Choice B reason: Glaucoma always leads to permanent blindness is not a good explanation, because it is inaccurate and pessimistic. Glaucoma does not always lead to permanent blindness, but rather to progressive vision loss that can be prevented or slowed down with early diagnosis and treatment. Glaucoma can cause peripheral vision loss, tunnel vision, or blind spots, but not necessarily complete blindness.

Choice C reason: Once retinal detachment occurs, it does not return to its normal state is not a good explanation, because it is irrelevant and misleading. Retinal detachment is a condition that occurs when the retina separates from the underlying layer of blood vessels, which can cause vision loss or blindness. However, retinal detachment is not caused by glaucoma, nor is it a common complication of glaucoma. Retinal detachment can sometimes be repaired with surgery, depending on the extent and duration of the detachment.

Choice D reason: Once bacterial infection has caused damage, the tissue does not regenerate is not a good explanation, because it is incorrect and confusing. Bacterial infection is not a cause or a consequence of glaucoma, but rather a separate condition that can affect the eye. Bacterial infection can cause inflammation, pain, discharge, or redness in the eye, but not necessarily vision loss or tissue necrosis. Bacterial infection can usually be treated with antibiotics, which can prevent or reverse the damage.

Choice A reason: Alcohol can trigger a gout attack because it increases the production and decreases the excretion of uric acid, which is the substance that causes inflammation and pain in the joints. Alcohol also dehydrates the body, which can worsen the symptoms of gout.

Choice B reason: Fruit juice is not a beverage that can trigger a gout attack. Fruit juice contains natural sugars and antioxidants, which may have a beneficial effect on the uric acid levels and the inflammation in the body. However, fruit juice should be consumed in moderation, as excess sugar intake can lead to weight gain and other health problems.

Choice C reason: Milk is not a beverage that can trigger a gout attack. Milk contains protein and calcium, which may help lower the uric acid levels and the risk of gout. Milk also has antiinflammatory properties, which may reduce the pain and swelling in the joints.

Choice D reason: Coffee is not a beverage that can trigger a gout attack. Coffee contains caffeine and antioxidants, which may have a protective effect on the uric acid levels and the inflammation in the body. Coffee also has a diuretic effect, which may help flush out the excess uric acid from the kidneys.