Which option represents a four-dose-per-day schedule?

Which option represents a four-dose-per-day schedule?

• A. Qd
• B. Tid
• C. Stat
• D. Qid

Answer: (D)

Four doses per day means taking a dose roughly every six hours to keep drug levels steady over a 24-hour period. The notation that conveys four times daily is the four-times-daily designation. This differs from once daily (one dose per day), which is not enough daily dosing, and from three times daily (three evenly spaced doses). It also differs from a stat instruction, which means a single dose given immediately. So the four-times-daily designation best fits a schedule of four evenly spaced doses per day.

Four doses per day means taking a dose roughly every six hours to keep drug levels steady over a 24-hour period. The notation that conveys four times daily is the four-times-daily designation. This differs from once daily (one dose per day), which is not enough daily dosing, and from three times daily (three evenly spaced doses). It also differs from a stat instruction, which means a single dose given immediately. So the four-times-daily designation best fits a schedule of four evenly spaced doses per day.