A client with diabetes and hypertension describes seeing "floaters" and flashes of light in their field of vision. The nurse understands that this description is indicative of which disorder?
Retinal detachment
Cataracts
Age-related macular degeneration
Open-angle glaucoma
The Correct Answer is A
A. Floaters and flashes of light are classic symptoms of retinal detachment. When the retina begins to detach from the underlying tissue, it can cause these visual disturbances. Floaters are small, shadowy shapes that move across the field of vision, while flashes of light can occur due to the retina being stretched or pulled.
B. Cataracts primarily cause blurred vision, difficulty seeing at night, and sensitivity to light, rather than floaters or flashes of light.
C. AMD generally affects central vision and can cause symptoms such as distorted vision, difficulty seeing in low light, and a loss of central vision. While AMD can cause vision changes, it is not typically associated with seeing floaters and flashes of light.
D. Open-angle glaucoma usually progresses slowly and is often asymptomatic in its early stages. It primarily affects peripheral vision, leading to a gradual loss of vision in the periphery.
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Related Questions
Correct Answer is D
Explanation
A. Phacoemulsification is a procedure used to remove cataracts from the eye. It involves using ultrasound waves to break up the cloudy lens (cataract) into small fragments, which are then suctioned out. While this procedure is relevant for cataract treatment, it does not address the acute management of angle-closure glaucoma.
B. Extracapsular cataract extraction is a surgical procedure to remove a cataract from the eye by making an incision and extracting the lens in one piece or in large segments. Like phacoemulsification, this procedure is focused on cataract removal and does not directly treat the underlying issue of acute angle-closure glaucoma.
C. A cochlear implant is a device used to provide a sense of sound to individuals with severe hearing loss or deafness. This procedure is unrelated to the treatment of eye conditions or intraocular pressure and therefore is not appropriate for managing primary angle-closure glaucoma.
D. Surgical iridectomy is a procedure specifically aimed at treating angle-closure glaucoma. It involves creating a small hole (iridectomy) in the peripheral iris to allow aqueous humor to flow from the posterior chamber of the eye to the anterior chamber, bypassing the obstructed drainage angle.
Correct Answer is A
Explanation
A. The late-phase response in asthma is characterized by a delayed and prolonged inflammatory reaction that can occur 4 to 6 hours after exposure to a trigger. It involves the recruitment of additional inflammatory cells, such as eosinophils and T cells, which contribute to ongoing airway inflammation, increased mucus production, and bronchoconstriction. This phase often leads to a return of symptoms or worsening of symptoms after the initial relief provided by a rescue inhaler.
B. The late-phase response does not typically respond as well to rescue inhalers (such as albuterol) as the early-phase response does. Rescue inhalers are primarily effective for the immediate, bronchospastic component of asthma (early-phase response).
C. The late-phase response occurs as part of the natural progression of asthma inflammation and is not necessarily related to improper use of a rescue inhaler. Even with proper use of a rescue inhaler, the late-phase response can still occur due to the underlying inflammatory processes.
D. The late-phase response can occur even if the trigger is no longer present. It is related to the ongoing inflammatory process rather than continued exposure to the trigger. Although continued exposure to triggers can exacerbate symptoms, the late-phase response can still occur independently of further exposure.
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