A physician writes an order for a medication to be administered QID. How often should the client receive the medication?
A.
Daily
B.
Four times a day
C.
Three times a day
D.
Twice a day
The Correct Answer and Explanation is:
The correct answer is B. Four times a day.
“QID” is a medical abbreviation derived from the Latin term quater in die, which means “four times a day.” It is commonly used in prescribing medications to indicate how frequently a patient should take a medication throughout the day. This schedule typically aligns with waking hours and is spaced approximately every 6 hours, though specific timings can vary based on the medication’s pharmacokinetics and the patient’s needs.
Why Is QID Important?
Medications prescribed QID are often used to maintain a consistent level of the drug in the bloodstream to ensure its efficacy. For instance, antibiotics may be prescribed four times a day to maintain an optimal concentration in the body, which is crucial for eradicating bacteria effectively. Skipping doses or not adhering to the prescribed frequency can lead to subtherapeutic drug levels, potentially reducing the medication’s effectiveness and increasing the risk of complications, such as antibiotic resistance or ineffective symptom control.
Understanding Medication Frequency Abbreviations
- QID (quater in die): Four times a day
- TID (ter in die): Three times a day
- BID (bis in die): Twice a day
- QD (quaque die): Once a day
- QHS (quaque hora somni): Every night at bedtime
- PRN (pro re nata): As needed
Nursing Considerations
When administering medications QID, it’s important for nurses to educate clients on the correct timing of doses, ensuring they understand the importance of taking the medication at the prescribed intervals. Nurses should also assess the client’s ability to adhere to the schedule, especially for individuals who may have difficulty keeping track of multiple daily doses, such as older adults or those with cognitive impairments.
In summary, QID indicates that a medication should be administered four times daily to ensure therapeutic efficacy and proper drug metabolism.