A patient is prescribed carbidopa/levodopa for the treatment of Parkinson's disease. The patient asks the nurse whether this medication will cure their condition.
Which is a correct statement about the effects of carbidopa/levodopa?

Choice A rationale

Topical corticosteroids are the mainstay of treatment for contact dermatitis. This inflammatory skin condition is characterized by a delayed hypersensitivity reaction, and corticosteroids reduce inflammation, pruritus, and erythema by suppressing the immune response, inhibiting cytokine release, and stabilizing lysosomal membranes, thus alleviating symptoms locally.

Choice B rationale

Intravenous corticosteroids are generally reserved for severe, widespread, or recalcitrant cases of contact dermatitis, or when there is significant systemic involvement, such as severe angioedema or airway compromise. For typical localized contact dermatitis, topical application is preferred to minimize systemic side effects.

Choice C rationale

Intravenous antibiotics are indicated for bacterial infections. Contact dermatitis is an inflammatory, non-infectious condition caused by exposure to an allergen or irritant. Therefore, antibiotics would not be a primary treatment unless there is a secondary bacterial infection complicating the dermatitis, which is not the typical initial presentation.

Choice D rationale

Oral antibiotics, like intravenous antibiotics, are used to treat bacterial infections. Contact dermatitis is not caused by bacteria but rather by an inflammatory immune response to external agents. Administering oral antibiotics without evidence of secondary bacterial infection would be inappropriate and ineffective for treating the underlying dermatitis.

Choice A rationale

Collecting the second voided specimen of the day is not the standard procedure for a clean-catch urine sample. A clean-catch specimen aims to collect urine mid-stream after initial flushing, regardless of the time of day, to minimize contamination from the urethra and external genitalia.

Choice B rationale

When obtaining a clean-catch urine specimen, the patient should void a small initial amount into the toilet. This initial stream helps to flush out microorganisms from the distal urethra and periurethral area, reducing contamination of the collected specimen and ensuring a more accurate representation of bladder urine.

Choice C rationale

Restricting fluids before specimen collection is generally contraindicated for a clean-catch urine. Adequate hydration ensures sufficient urine volume for collection and can help to dilute contaminants, making it easier to obtain a clean mid-stream sample. Fluid restriction may lead to a concentrated, insufficient sample.

Choice D rationale

Placing the specimen in a clean urinalysis container is insufficient; the container must be sterile. A non-sterile container can introduce external contaminants into the urine sample, leading to inaccurate laboratory results, potentially causing misdiagnosis or inappropriate treatment for a urinary tract infection.