Difficulty: Medium

Average Score: 60%

Which of the following describes the sig code q hs PRN?

Rationale

Every night at bedtime as needed.

The sig code "q hs PRN" indicates that the medication is to be taken every night at bedtime as needed. "q" stands for "quaque," meaning "every," "hs" stands for "hora somni," which translates to "at bedtime," and "PRN" means "as needed," indicating that it's not a scheduled dose but rather taken when necessary.

A (Every night at bedtime as needed) CORRECT

This choice accurately describes the meaning of the sig code "q hs PRN." It specifies that the medication should be administered every night at bedtime if needed, aligning perfectly with the components of the code.

B (Every day after meals as directed) YOUR ANSWER

This option is incorrect because "q hs" does not pertain to daily administration or meals. The term "hs" specifically refers to bedtime, not after meals, which is why this choice misinterprets the timing and context of the sig code.

C (Every evening as needed) YOUR ANSWER

While this choice is close, it is not entirely correct since "evening" could imply a different time than "bedtime." The sig code specifically indicates administration at bedtime ("hs"), which is a more precise directive than simply "evening."

D (Every hour as directed) YOUR ANSWER

This option is incorrect because "q" in this context does not indicate hourly administration. The sig code "q hs PRN" implies a much less frequent dosage, emphasizing the need for the medication only at bedtime.

Conclusion

Understanding sig codes is crucial for accurate medication administration. The interpretation of "q hs PRN" clearly communicates that the medication should be taken every night at bedtime as needed, ensuring both the timing and necessity are correctly understood. Each incorrect choice misinterprets or misrepresents the specific instructions given by the sig code, highlighting the importance of precise language in medical prescriptions.

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