I cannot watch a hospital drama like a normal person any more, and I have made my peace with this. Where everyone else sees high stakes and a chiselled jaw above a mask, I see a surgeon who has just contaminated their gown on the door handle, a monitor performing physiology that does not exist, and an anaesthetist who appears to have wandered off to a different film entirely. It is the professional curse of every job: once you know how the sausage is made, you cannot un-see the sausage.

In fairness to the filmmakers, a real operating theatre is dreadful television. It is long, quiet, and mostly involves four people staring intently at a small patch of someone while a machine sighs rhythmically in the background. There is no music. Nobody narrates the anatomy for the audience. The most dramatic thing that happens for an hour might be a polite request for a different size of implant. So the screen invents a parallel theatre that is tense and legible and completely wrong — and after a while you stop being annoyed and start being impressed by the sheer consistency of the errors.

Below are four stock operating-theatre scenes, the ones every production reaches for. Each looks plausible until you tap it. Tap to reveal what is actually wrong — and keep score of how many you already knew. No medical training required; most of these are things the films get wrong about themselves, not about medicine.

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The flatline is the one that hurts

Of all the inventions, the cardiac-arrest scene is the one with real consequences, because people believe it. The screen has taught a generation that a flat line is a thrilling emergency you fix with paddles and a shout of clear, and that CPR works most of the time and the patient sits up afterwards looking a bit ruffled but essentially fine. Reality is quieter and far less kind: you cannot shock asystole at all, survival from in-hospital arrest is a long way short of the on-screen figures, and CPR done properly is violent, exhausting, and often unsuccessful. None of which makes good television, all of which matters when a family has to make a real decision having only ever attended the cinema’s version of medical school.

The films get the lights right and the silence wrong. The hardest part of an operation to dramatise is that, when it is going well, almost nothing visible is happening at all.

What they actually nail

I do not want to be the joyless surgeon at the back of the cinema, so let me hand over the credit that is due. The look is often spot on — the big shadowless lights, the cool palette, the instruments laid out in their precise rows like a very tense dinner service. The focus is real: that tunnelling concentration where the whole world shrinks to a few square centimetres is the truest thing the screen captures. And the better recent dramas have started to show the checklist and the team brief, which is genuinely how a modern theatre opens — a small, unglamorous ritual that has quietly saved more lives than any heroic monologue ever filmed.

So I will keep watching, wincing politely at every door handle and every nasal mask, and forgiving all of it. A real operating theatre is a place where competence is mostly invisible and the drama is almost entirely internal — which is exactly why it makes terrible television and rather good work. The films are not lying so much as translating, turning something quiet and slow into something an audience can sit through. I just happen to be the worst possible person to sit next to while they do it.