A client has had several measurements of intraocular pressure. Which measurements would the nurse interpret as indicating need for pharmacologic intervention?
1. A single reading of 14 mmHg
2. A consistent reading trending between 15 and 16 mmHg.
3. A single reading of 19 mmHg.
4. Readings consistently higher than 21 mmHg.
5. A single reading of 32 mmHg.
Correct Answer: 4,5
Rationale 1: This reading is just lower than normal and does not indicate need for intervention.
Rationale 2: The normal range of IOP is between 15 and 156 mmHg.
Rationale 3: Even though this reading is above normal, it is not unusual for a single reading to be this high. The client should be observed.
Rationale 4: Some persons may tolerate IOP at this level, but in most cases, pharmacologic intervention is indicated.
Rationale 5: A single reading above 30 mmHg should be treated to prevent optic nerve damage.
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