A client is admitted with orbital cellulitis of the right eye. The most common cause of orbital cellulitis in adults is an infection caused by staphylococci and streptococci as a result of:
• Bacterial sinusitis.
• Traumatic induction of bacteria.
• Intraocular surgery.
• Conjunctivitis.
Bacterial sinusitis.
Rationale: Orbital cellulitis is inflammation of the postseptal orbital tissue from the spread of bacteria from elsewhere, usually from the nasal and sinus system. The most common causative organisms in adults are staphylococci and streptococci from bacterial sinusitis. It can be caused by traumatic induction of bacteria, but it is not the most common cause. Infection is a risk of any surgery, but an infection from intraocular surgery generally does not cause orbital cellulitis. Conjunctivitis is an inflammation of the conjunctiva caused by a bacteria, virus, or allergen.
You might also like to view...
Order: KCl 40 mEq Available: KCl 10 mEq/tablet
a. 2 tablets b. 4 tablets c. 3 tablets d. 2 1/2 tablets
Deficiencies are likely to develop most rapidly with low intakes of vitamin
a. A. b. C. c. D. d. E.
A patient is admitted with the diagnosis of pediculosis capitis (head lice). Proper treatment for this condition would include which of the following? (Select all that apply.)
a. Use of medicated shampoo or permethrin (Nix) b. Use of products containing lindane c. Combing the hair with a nit comb for 2 to 3 days after treatment d. Washing linens in cold water for 30 minutes
The mechanism of action of systemic antifungal agents is to
1. interfere with the synthesis of ergosterol in the fungal cell membrane. 2. bind to toxic levels of parasite in the red blood cells. 3. bind to steroids in the fungal cell membrane. 4. kill fungal growth.