How to Learn the Medical Abbreviations
Charts, orders and prescriptions are written in shorthand — NPO, PRN, BID, stat. Misreading one can be dangerous, so nurses and med students must know them cold. This deck teaches the everyday abbreviations you will meet on every shift.
There are 16 cards in the deck below. You can read through them, practise them right here with the flip-card player, and then save the deck to study properly with spaced repetition — the method that makes them stick for months, not minutes.
Why the common medical abbreviations is hard to memorize (and the fix)
The dosing-frequency codes (BID, TID, QID, PRN) are easy to mix up, and getting them wrong changes how often a patient gets medication. They are worth drilling until automatic.
The fix is active recall plus spaced repetition. Instead of re-reading the list (which feels productive but barely works), you test yourself — pull each answer out of memory — and you review each card on a schedule that stretches over time. Every time you successfully recall a fact, the memory gets stronger and the next review is pushed further out. That's how you go from "I saw it once" to "I just know it."
The fastest way to learn the common medical abbreviations
- Break it into small batches. Learn the frequency codes together (BID, TID, QID, PRN, stat), then the routes (PO, IV, IM), then the rest.
- Test, don't re-read. Look at the question, say the answer out loud before flipping the card. The little struggle to recall is what builds the memory — a smooth re-read does almost nothing.
- Review on a schedule. Spaced repetition shows you each card right before you'd forget it. Get one right and it comes back in a few days, then a week, then a month. Miss one and it comes back sooner.
- Keep sessions short and daily. Five to ten minutes a day beats a two-hour cram every time. Consistency is the whole game.
One fact per card. PRN means "as needed" (not on a schedule) — a crucial distinction from the fixed frequencies.
The full deck: the Medical Abbreviations
Here's every card in the set. Practise them above, or save the deck and let spaced repetition schedule your reviews automatically.
| Abbreviation | Meaning |
|---|---|
| What does "NPO" mean? | Nothing by mouth (nil per os) |
| What does "PRN" mean? | As needed |
| What does "stat" mean? | Immediately |
| What does "BID" mean? | Twice a day |
| What does "TID" mean? | Three times a day |
| What does "QID" mean? | Four times a day |
| What does "PO" mean? | By mouth (per os) |
| What does "IV" mean? | Intravenous (into a vein) |
| What does "IM" mean? | Intramuscular (into a muscle) |
| What does "BP" mean? | Blood pressure |
| What does "HR" mean? | Heart rate |
| What does "Rx" mean? | Prescription |
| What does "Dx" mean? | Diagnosis |
| What does "Hx" mean? | History |
| What does "SOB" mean? | Shortness of breath |
| What does "MI" mean? | Myocardial infarction (heart attack) |
Save this deck and actually remember it
Create a free account, keep this 16-card deck, and we'll schedule every review at the perfect moment. First deck free forever — no credit card.
Study this deck free →FAQ: learning the common medical abbreviations
How long does it take to learn the common medical abbreviations?
Most people can lock in the common medical abbreviations within one to three weeks of short daily sessions. With spaced repetition doing 10–16 cards a day, you'll recognise them within days and recall them reliably within a couple of weeks.
What's the best way to memorize the common medical abbreviations?
Active recall plus spaced repetition. Test yourself instead of re-reading, and review on a schedule that spaces the cards out over time. Flashcards are built for exactly this — which is why the deck above is the fastest path.
Is this deck free?
Yes. You can practise all 16 cards on this page for free with no account. Sign up (also free) to save the deck and let spaced repetition schedule your reviews so it sticks long-term.