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Veterinary Technician Exam Practice Questions

Category - Pharmacology

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A patient is prescribed a medication with the instructions to apply it O.S. q.i.d. x 10 days. What does this mean?
  1. Apply to the left ear, every six hours, for ten days.
  2. Administer by mouth, every ten hours, for five days.
  3. Apply to the left eye, four times daily, for ten days.
  4. Apply to the right eye, every six hours, for ten days.
Explanation
Answer - C- Apply to the left eye, four times daily, for ten days are the correct directions for a medication with the instructions to apply it O.S. q.i.d. x 10 days. O.S. is the abbreviation for left eye, and q.i.d. means four times daily, or every six hours.
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