A client receives a prescription for ophthalmic ketorolac. Prior to administering the medication, the nurse should review the medical record for which condition?
Corneal abrasion.
Chemical burn.
Radiation exposure.
Foreign body.
The Correct Answer is A
Choice A rationale
Corneal abrasion is a contraindication for the use of ophthalmic ketorolac. Ketorolac is a nonsteroidal anti-inflammatory drug (NSAID) that can delay healing and increase the risk of further damage to the cornea.
Choice B rationale
Chemical burns are not a primary contraindication for ophthalmic ketorolac. However, the treatment of chemical burns typically involves other specific interventions, and the use of ketorolac should be carefully considered.
Choice C rationale
Radiation exposure is not a direct contraindication for the use of ophthalmic ketorolac. The medication is used to reduce inflammation and pain, which may be beneficial in managing symptoms related to radiation exposure.
Choice D rationale
A foreign body in the eye is not a primary contraindication for ophthalmic ketorolac. However, the foreign body should be removed, and the eye should be thoroughly examined before administering any medication.
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Correct Answer is D
Explanation
Choice A rationale
Observing pupil response of the right eye is not relevant to the care of the left eye post-cataract extraction.
Choice B rationale
Sleeping flat in a supine position is not recommended as it can increase intraocular pressure. Elevating the head is advised.
Choice C rationale
Turning, coughing, and deep breathing every 2 hours is not specific to cataract surgery and can increase intraocular pressure.
Choice D rationale
Administering a stool softener is important to prevent straining during bowel movements, which can increase intraocular pressure and affect healing.
Correct Answer is A
Explanation
Choice A rationale
Lactulose is a synthetic sugar used to treat hepatic encephalopathy by reducing the absorption of ammonia in the intestines. Ammonia is a neurotoxin that can impair mental status in patients with liver dysfunction. By decreasing ammonia levels, lactulose helps improve cognitive function and mental status in patients with hepatic encephalopathy.
Choice B rationale
While lactulose can cause diarrhea as a side effect, the therapeutic goal in hepatic encephalopathy is not to reduce the number of liquid stools but to lower ammonia levels in the blood. The reduction in ammonia levels leads to improved mental status, not necessarily a reduction in liquid stools.
Choice C rationale
The ability to ambulate independently is not a direct therapeutic response to lactulose. The primary goal of lactulose therapy in hepatic encephalopathy is to improve mental status by reducing ammonia levels, not to enhance physical mobility.
Choice D rationale
Lactulose does not have a direct effect on urine output. Its primary mechanism of action is to reduce ammonia absorption in the intestines, thereby improving mental status in patients with hepatic encephalopathy.