Why CPR skills fade long before the certificate does
A three-year certificate is a record of one good afternoon. Here is what actually decays, how quickly, and the ninety seconds of rehearsal that hold it together.
Ask a room of ten people when they last practised CPR and you will usually get the same answer: at a course, some years ago, on a manikin, once. Ask them what they remember and the answers scatter. Thirty compressions? Fifteen? Breaths first, or compressions first? Somebody will say the guidance changed again.
The guidance has barely changed. What changed is that nobody rehearsed it.
Skill fade is faster than anyone expects
Research on resuscitation training keeps landing on the same uncomfortable finding: the practical skill drops away within months of a course, long before the certificate on the wall expires. Compression depth slips first, then rate, then the willingness to start at all. A certificate valid for three years is a record of what you could do on one afternoon — not a description of what you can do today.
The certificate says you passed. Rehearsal is what decides whether you act.
This is not an argument against certification. It is an argument for treating the course as the start of the habit rather than the whole of it.
What actually holds up
The things that survive skill fade are the ones tied to a decision rather than a number. Recognising that somebody is not breathing normally. Getting hands on the chest without waiting for permission. Sending a specific person — by name, by pointing — to fetch the AED instead of asking the room in general.
We build sessions around those decision points on purpose, and we make people do them out loud, standing up, in front of colleagues. It feels awkward. Awkward is the part that sticks.
Three things worth doing before your next renewal
- Rehearse the first ten seconds. Not the whole protocol — just the opening. Check, shout, send someone for the AED. Ten seconds, twice a year.
- Find your nearest AED and open the cabinet. Knowing where it is on a map is not the same as having handled the case.
- Say the words. People freeze on speech before they freeze on technique. Practise saying "you, in the blue jacket, bring the AED from the front desk."
None of that requires booking anything. It takes about a minute, and it is the difference between a certificate and a response.