ICU and You · Mind Map Series · Number 33
One to five years — when the physiology stops being the hard part and the child becomes it
The infant could not tell you what was wrong. This one can, and will not.
Somewhere in the second year the difficulty changes character. The airway is still not an adult's and the circulation still defends its blood pressure until the moment it stops, but those are no longer the things that catch people out. What catches people out is that the patient has acquired opinions. They will not open their mouth, they will not keep the mask on, they will not stay still for the ultrasound, and they will remember what you did last time.
The epidemiology changes with it. The threats of the first year came from inside the child or from the people around them. These come from the world being newly reachable: a mobile child with an immature sense of consequence, a swimming pool, a handbag on the floor, a battery in a remote control. The map runs the way the shift runs — the physiology first, then what usually walks in, then what must not be missed, then the presentations that mislead, then the two subjects nobody enjoys, and finally the hour before the retrieval team arrives.
Do not read it like a chapter. Scan it. Let your eye go where it wants, read three boxes that catch it, and stop. You are not trying to finish it and you are certainly not trying to memorise it.
Then come back. Before a shift on which the subject might come up, or after a case that went a particular way, or in a quiet ten minutes. Thirty seconds at a time, often, beats an hour once.
It works the way a painting in a corridor works. Nobody sits down and studies the painting they walk past every morning, and yet after a year they could tell you what is in it, where the light falls, and exactly what is on the left-hand side — and they would notice at once if something had changed. That noticing is the point. These maps are not built to be recalled on demand; they are built so that when the thing in front of you does not fit, something quietly objects.
On a phone: turn it sideways, or scroll the map across. Pinch to zoom on any section.
One sentence, back to me: what do you actually do to get a frightened three-year-old to let you examine them? The thing that works, not the thing in the textbook.
I am asking because it is the least documented skill in paediatric practice and the most unevenly distributed. Some people walk into a cubicle and the child is calm in ninety seconds; some of us are still negotiating at ten minutes. Whatever yours is — where you stand, what you say first, what you let them hold, what you examine on the parent rather than the child — I would like to collect them.
And an optional reflection: what is the one thing at this age you now always ask about, because of a case you have not forgotten? The foreign body nobody mentioned, the battery, the second bruise. Those are the answers that teach.
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