A nurse at an ophthalmology clinic is providing teaching to a client who has open-angle glaucoma and a new treatment regimen of timolol and pilocarpine eye drops. Which of the following instructions should the nurse provide?
Administer the medications 5 minutes apart.
Hold pressure on the conjunctival sac for 2 minutes following application of drops.
It is not necessary to remove contact lenses before administering medications.
Administer the medications by touching the tip of the dropper to the sclera of the eye.
The Correct Answer is A
Choice A: Administer the Medications 5 Minutes Apart
Administering the medications 5 minutes apart is crucial when using multiple eye drops. This practice ensures that each medication has enough time to be absorbed without being washed out by the subsequent drop. This is particularly important for medications like timolol and pilocarpine, which are used to manage intraocular pressure in glaucoma.
Choice B: Hold Pressure on the Conjunctival Sac for 2 Minutes Following Application of Drops
Holding pressure on the conjunctival sac (punctal occlusion) for 2 minutes after applying eye drops can help reduce systemic absorption and increase the local effect of the medication. However, this instruction is not as critical as the timing between administering different eye drops.
Choice C: It Is Not Necessary to Remove Contact Lenses Before Administering Medications
This statement is incorrect. Contact lenses should be removed before administering eye drops to prevent contamination and ensure proper absorption of the medication. The lenses can be reinserted after a sufficient amount of time has passed, usually around 15 minutes.
Choice D: Administer the Medications by Touching the Tip of the Dropper to the Sclera of the Eye
This statement is incorrect. The tip of the dropper should never touch the eye or any other surface to avoid contamination. The correct method is to hold the dropper above the eye and squeeze out the prescribed number of drops into the conjunctival sac.
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Correct Answer is A
Explanation
Choice A reason: WBC count:
An elevated white blood cell (WBC) count is a common indicator of infection. The body produces more white blood cells to fight off infections, making this a key marker for identifying infections in patients with pressure ulcers. Monitoring WBC count helps in assessing the presence and severity of an infection, guiding appropriate treatment.
Choice B reason: BUN:
Blood urea nitrogen (BUN) levels are used to assess kidney function and hydration status. Elevated BUN levels can indicate dehydration or kidney dysfunction but are not specific indicators of infection. While important for overall health assessment, BUN is not directly related to detecting infections in pressure ulcers.
Choice C reason: Potassium:
Potassium levels are crucial for maintaining normal cellular function, particularly in the heart and muscles. Abnormal potassium levels can indicate issues such as kidney dysfunction or electrolyte imbalances but do not specifically indicate infection. Monitoring potassium is important for overall health but not for diagnosing infections in pressure ulcers.
Correct Answer is D
Explanation
Choice A: Low-Grade Fever
Low-grade fever is a common early symptom of rheumatoid arthritis (RA). It is often associated with the body’s inflammatory response to the autoimmune activity occurring in the joints. While it can persist throughout the disease, it is not considered a late manifestation.
Choice B: Weight Loss
Weight loss can occur in RA due to chronic inflammation and its effects on metabolism and appetite. However, it is more commonly seen in the early to middle stages of the disease rather than as a late manifestation. Persistent inflammation can lead to muscle wasting and weight loss, but these are not specific to the advanced stages of RA.
Choice C: Anorexia
Anorexia, or loss of appetite, is another symptom that can be present in RA. It is often related to the chronic inflammation and pain associated with the disease, which can reduce a person’s desire to eat. Like weight loss, anorexia can occur at various stages of RA and is not specifically a late manifestation.
Choice D: Knuckle Deformity
Knuckle deformity is a late manifestation of rheumatoid arthritis. As RA progresses, the chronic inflammation can lead to joint damage and deformities, particularly in the hands and fingers. This includes changes such as ulnar deviation, swan neck deformities, and boutonnière deformities. These deformities result from the destruction of joint tissues and the formation of scar tissue, which can significantly impair hand function.
