A full-term, 24-hour-old infant in the nursery regurgitates and suddenly turns cyanotic. Which immediate intervention should the practical nurse (PN) implement?

Glaucoma is a group of eye diseases that damage the optic nerve and cause vision loss. It is often associated with increased intraocular pressure, which can compress the nerve fibers and reduce blood flow to the retina. The most common type of glaucoma, open-angle glaucoma, causes gradual loss of peripheral vision.

The other options are not correct because:

1. Macular edema is a condition that causes swelling and fluid accumulation in the macula, the central part of the retina that is responsible for sharp and detailed vision. It can cause blurred or distorted vision, but it does not affect the optic nerve or the peripheral vision.
2. Cataract is a condition that causes clouding of the lens, which is the transparent structure that focuses light onto the retina. It can cause blurred, dim, or yellowed vision, but it does not affect the optic nerve or the intraocular pressure.
3. Diabetic retinopathy is a complication of diabetes that damages the blood vessels in the retina and causes bleeding, leakage, or scarring. It can cause blurred, fluctuating, or darkened vision, but it does not affect the optic nerve or the intraocular pressure.
4. 

The correct answer is Choice B. Refer to the dermatologist for prescribed long-term therapy. Choice A rationale:

Omitting specific foods like chocolate, carbonated drinks, and fried foods from the diet is a common misconception about acne management. While a healthy diet can contribute to overall skin health, there is no direct evidence to support the notion that avoiding these foods alone will effectively treat acne. Acne is a complex skin condition influenced by various factors, including hormonal imbalances and genetics.

Choice B rationale:

Referring the client to a dermatologist for prescribed long-term therapy is the most appropriate recommendation for managing acne. Dermatologists are medical professionals specialized in skin conditions and can provide personalized treatment plans based on the client's specific type and severity of acne. They may prescribe topical or oral medications, such as retinoids, antibiotics, or hormonal therapy, to effectively manage acne.

Choice C rationale:

Expressing blackheads and using an exfoliating scrub is not a recommended approach for managing acne. Manual extraction of blackheads can lead to skin irritation, infection, and scarring. Exfoliating scrubs can also cause damage to the skin, especially if used too frequently or if the acne is inflamed.

Choice D rationale:

Washing the hair and skin daily with mild soap and warm water is a general hygiene recommendation and may help to keep the skin clean, but it is not a specific and effective treatment for acne. Acne requires targeted therapies to address its underlying causes and manage its symptoms.