The nurse is assisting with tonometry on a patient at the ophthalmologist's office. The results indicate the patient's reading to be 17 mm Hg. The nurse interprets this result as IOP.
severely increased
slightly increased
normal
Decreased
The Correct Answer is C
a) Severely increased: A reading of 17 mm Hg is within the normal range for intraocular pressure (IOP), which is typically 10-21 mm Hg.
b) Slightly increased: A reading of 17 mm Hg is within the normal range and does not indicate an increased IOP.
c) Normal: A reading of 17 mm Hg is considered within the normal range for intraocular pressure.
d) Decreased: A reading of 17 mm Hg does not indicate decreased intraocular pressure.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
a) 2 weeks: It’s typically too early for fitting a prosthesis after enucleation. Healing time is required before the fitting.
b) 4 weeks: While closer, the patient will likely need a longer healing period before fitting.
c) 8 weeks: Generally, a prosthesis can be fitted around 8 weeks post-enucleation, allowing enough time for the eye socket to heal and settle.
d) 12 weeks: Although healing may take longer, 8 weeks is the most common timeframe for prosthesis fitting.
Correct Answer is B
Explanation
a) Decreasing viscosity of the tears and allowing fluid to drain away from the eye: This is incorrect. Osmotic agents do not act by affecting the viscosity of tears or enhancing drainage.
b) Increasing plasma osmolarity and drawing extracellular fluid into the blood: Osmotic agents, like mannitol, work by increasing plasma osmolarity, which draws excess fluid from the eye into the bloodstream, thereby lowering intraocular pressure.
c) Blocking production of aqueous humor: This is incorrect. Blocking production of aqueous humor is the mechanism of action of medications like beta-blockers (e.g., timolol), not osmotic agents.
d) Promoting outflow of the aqueous humor into the tear ducts: This is incorrect. Promoting outflow of aqueous humor is the mechanism of action for other medications, such as prostaglandin analogs, not osmotic agents.
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