How to write good medical flashcards: one fact, one question, one answer

The one-fact rule

A card should test one thing. The test is simple: if you could get half of it right, split it. A card that reads “Treatment of anaphylaxis” with a paragraph on the back gives you no clean signal. You will mark it correct after remembering adrenaline and forgetting the rest, and the gap survives.

Better: one card for the first-line drug, one for the usual route, one for the position you put the patient in, one for what you do next. Four short cards feel like more work to write but take seconds each to review.

Before and after

Two examples show what to change.

• Weak: “Heparin” on the front, a block of text on the back. Better: “Reversal agent for unfractionated heparin?” Protamine sulfate.
• Weak: “Hyperkalaemia ECG changes” with six items. Better, split: “Tall peaked T waves suggest which electrolyte problem?” Hyperkalaemia. A second card asks for the first-line membrane-stabilising drug.
• Weak: a table of normal ranges as one card. Better: one card per value you actually forget, such as the adult normal range for serum potassium. Check the range against the reference your exam uses, because laboratories differ.

Use your own words and your own errors

Cards copied from a textbook feel authoritative but are easy to review without thinking. A card you wrote after getting a question wrong carries the memory of the mistake, and that tends to make it stick. Start from your errors. The error log is a good source: each repeated mistake is a candidate card.

Cues, images and confusable pairs

Where two things get mixed up, such as look-alike drug names or two isolation precautions, put the contrast on the card: “Airborne or droplet precautions for tuberculosis?” Add a small image or a cue word if it helps you, but do not decorate for its own sake. A card with a clear question and a short answer needs no extra material.

For list facts that really must be learned as a list, such as the steps of a procedure, try cloze deletion: a sentence with one blank. Each blank becomes a separate card, so you test each step in context.

Things that slow a deck down

Several habits make a deck feel heavy.

• Cards that need more than about ten seconds to answer.
• Cards that test understanding. “Why does insulin lower potassium?” is a topic for notes and questions.
• Cards copied from a source you have not read, which you cannot defend or correct.
• Duplicates. Search your deck before you add a new one.
• Too many new cards at once. See how many flashcards per day.

Accuracy matters more with cards

A wrong fact on a card gets rehearsed many times, which is the opposite of what you want. When you write a card, check it against your textbook or a guideline. Where numbers vary between authorities or have changed over time, note the source on the card or leave the number out and learn the principle. For the DHA exam, aim for widely accepted teaching rather than one hospital’s local protocol, and follow the DHA exam guide for how the exam is set up.

Worked examples by type of fact

Different kinds of fact call for different card shapes.

A drug and its use: front, “First-line drug for anaphylaxis in adults?” Back, “Adrenaline (epinephrine), intramuscular.” One drug, one setting, one route. A second card can ask where it is injected, so you are not carrying two facts on one card.

A value: front, “Adult normal range for serum sodium?” Back, the range from your reference. Add the unit to the question. Different laboratories use slightly different limits, so use the one in your course material and keep it consistent across cards.

A criterion: front, “CURB-65: what does the U stand for?” Back, “Urea, raised.” Cards on scoring tools work best one element at a time, because the full list is hard to recall under pressure and easy to break into pieces.

A procedure step: front, “Before giving an intravenous drug, which check on the patient comes first?” Back, “Identity, against the wristband and the order.” Procedures are better tested as questions about order than as a block of steps.

A ten-minute card-writing session

The best time to write cards is just after a question set, while the mistakes are fresh. Open your last ten wrong answers. For each one, ask whether the miss was a fact (a card is useful), a technique issue (put it on the rules page) or a misunderstanding (read the explanation again). Write cards only for the first kind.

Write the front first, as a question you could answer in one line. Then write the shortest back that is still correct. Read both aloud. If you stumble, simplify. Finally, check the fact against your reference before saving. Ten minutes will usually yield four to six good cards. That is enough: a deck built slowly from your own errors tends to be small, sharp and well matched to your gaps.

Cloze cards for sentences you must know

A cloze card hides one word or phrase in a sentence. For a fact that is best learned in context, it works well. For example: “In suspected hyperkalaemia with ECG changes, give intravenous ____ first to protect the heart.” The answer is calcium. The surrounding words give you the situation, and the blank asks for the single decision.

Keep cloze sentences short and hide one item only. If a sentence has three blanks, you are really testing three facts, so split it into three cards. Use cloze cards for criteria and first actions, and plain question cards for definitions and values.

Images that earn their place

An image helps when recognition is the skill: an ECG pattern, a rash, a chest X-ray sign or the shape of a device. Use a clear, correctly labelled image from a source you may legally use, such as your own drawing or a properly licensed resource, and put the question beside it: “What does this rhythm show?” Do not copy images from textbooks into a deck you plan to share.

Sharing and copying cards

Sharing decks with colleagues is common, and fine if you are sharing your own writing. Do not copy another provider’s deck or reproduce text from a commercial question bank, because that is likely to breach their terms and copyright. Never share or look for cards that claim to reproduce real exam questions. Besides the risk to your licence, they are often inaccurate. Write your own from your own errors and from reliable references and you will have a deck that is yours to share.

Prune as you go

Once a week, spend five minutes on the cards you missed most. For each one, ask: is the question clear, is the answer short, do I understand the idea behind it? Rewrite, split or delete. A smaller, cleaner deck beats a big one that you dread opening.

If you would rather not write every card yourself, the decks in Meddex flashcards cover common exam facts, and you can use the same rules to judge them and your own.

Frequently asked questions