Nokea
A patient has been using dexamethasone eyedrops for allergic conjunctivitis but has developed bacterial conjunctivitis and has a prescription for gentamicin (Garamycin) ointment. The nurse notes that which interaction is possible if the two drugs are used together?
- A. The infection may become systemic.
- B. The gentamicin effects may become more potent.
- C. The corticosteroid may cause overgrowth of nonsusceptible organisms.
- D. Immunosuppression may make it more difficult to eliminate the eye infection.
Correct Answer: D
Rationale: Concurrent use of corticosteroids, such as dexamethasone, and ophthalmic antimicrobials may cause immunosuppression that may make it more difficult to eliminate the eye infection.
You may also like to solve these questions
When teaching a patient about the proper application of eyedrops, the nurse will include which instruction?
- A. Apply the drops into the conjunctival sac instead of directly onto the eye.
- B. Apply the drops directly to the eyeball (cornea) for the best effect.
- C. Blot your eye with a tissue immediately after applying the drops.
- D. Tilt your head forward before applying the eyedrops.
Correct Answer: A
Rationale: All ophthalmic drugs should be administered in the conjunctival sac. Gently use a tissue to remove excess eye medication"do not blot the eye after giving the medication. Tilt the head back before giving the eyedrops.
The nurse will be giving ophthalmic drugs to a patient with glaucoma. Which drug is given intravenously to reduce intraocular pressure when other medications are not successful?
- A. Tobramycin
- B. Bacitracin
- C. Mannitol
- D. Ketorolac
Correct Answer: C
Rationale: Drugs used to reduce intraocular pressure include osmotic diuretics such as mannitol, which is given intravenously. Tobramycin and bacitracin are antibiotics; ketorolac has anti-inflammatory actions.
A patient will be receiving mannitol, 1.5 g/kg IV 1 hour before ocular surgery. The patient weighs 132 pounds. How many grams of mannitol will this patient receive for this dose?
Correct Answer: 90 g
Rationale: Convert the patient's weight to kilograms: 132 pounds ?· 2.2 = 60 kg. Calculate the dose of mannitol: 60 kg ?? 1.5 g/kg = 90 g of mannitol.
The nurse is administering antibiotic eyedrops to a patient for the first time. After the first drop is given, the patient states, 'That eyedrop is making my eye sting! Is that normal?' Which is the best response by the nurse?
- A. That is unusual. Let me rinse the medication from your eye.
- B. Sometimes these eyedrops may cause burning and stinging, but it should go away soon.
- C. These may be serious side effects, so I will notify your doctor before the next dose is due.
- D. Let's wait and see if these effects happen the next time you receive these drops.
Correct Answer: B
Rationale: Ocular antibiotics may cause local inflammation, burning, stinging, urticaria, and dermatitis. These effects are transient. The other options are incorrect.
A patient is about to undergo ocular surgery. The preoperative nurse anticipates that which drug will be used for local anesthesia?
- A. Oral glycerin
- B. Proparacaine eye drops
- C. Timolol eye drops
- D. Dipivefrin eye drops
Correct Answer: B
Rationale: Proparacaine and tetracaine are used as a local anesthetic for ocular surgery or other procedures. The other drugs are used for glaucoma.