Which abbreviation means 'hour'?

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Multiple Choice

Which abbreviation means 'hour'?

Explanation:
The time unit for hour is shown as h or hr. In dosing instructions, you’ll often see q4h meaning every four hours, which uses this abbreviation for the duration between doses. The other terms refer to different things: gtt means drops (guttae), s.i.d. means once daily (semel in die), and susp stands for suspension, a liquid form of medication. So the shorthand for hour is h/hr.

The time unit for hour is shown as h or hr. In dosing instructions, you’ll often see q4h meaning every four hours, which uses this abbreviation for the duration between doses. The other terms refer to different things: gtt means drops (guttae), s.i.d. means once daily (semel in die), and susp stands for suspension, a liquid form of medication. So the shorthand for hour is h/hr.

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