Two queues, not one

Picture a Saturday evening waiting room. A man with a bandaged hand has been sitting near the vending machine for two hours. A woman walks in, speaks briefly to a nurse, and is taken through within ten minutes. To the man with the hand injury, this looks like queue-jumping. It is not — it is triage doing exactly what it is meant to do.

Every A&E runs two queues at once. There is the visible one — the order people walked through the door — and the clinical one, which ranks patients by how urgently they need a doctor. Only the second queue decides who gets called. The woman who went straight through almost certainly had something time-critical: perhaps chest pain, perhaps stroke symptoms. The bandaged hand, uncomfortable as it is, can safely wait.

Once you understand this, an A&E visit becomes far less baffling. This guide walks through what happens at the triage desk, what the categories mean, and what you can do to make sure the nurse has an accurate picture of you.

Your first few minutes: the triage assessment

Shortly after you book in — the aim in most departments is within a quarter of an hour — a nurse with specialist emergency training will call you through for a short assessment. This is not your main consultation. Its single purpose is to work out how urgent your problem is.

Expect three things to happen.

A set of observations

The nurse records the numbers that reveal how your body is coping:

  • Pulse and blood pressure
  • Breathing rate — often counted quietly while you talk
  • Temperature
  • Oxygen levels, via a painless clip on a fingertip
  • A finger-prick glucose reading, if diabetes could be part of the picture

These feed into an early-warning score. Readings well outside the normal range push you up the priority list; a completely normal set is reassuring, even when you feel dreadful.

A short, focused history

You will be asked when the problem started, whether it is improving or worsening, how bad any pain is out of ten, what you have already tried, what medicines you take, and whether you have allergies or relevant conditions. The questions are deliberately brisk — the nurse is filling in a risk picture, not writing your life story.

A quick look

The nurse may glance at a wound, press gently on a swollen ankle, or listen to your chest. A fuller examination comes later, from the clinician who treats you.

The five levels of urgency

The majority of UK emergency departments sort patients using the Manchester Triage System, which places everyone into one of five bands. Each band carries a target time for medical review.

  1. Immediate (red) — no wait at all. Cardiac arrest, patients who are not breathing adequately, catastrophic bleeding, deep unconsciousness. These patients bypass the waiting room entirely and go to the resuscitation area.
  2. Very urgent (orange) — target of ten minutes. Suspected heart attacks, stroke symptoms within the treatment window, serious breathing difficulty, major burns, victims of high-speed collisions.
  3. Urgent (yellow) — target of one hour. Think of a person with severe abdominal pain and a racing pulse, a suspected broken thigh bone, or someone in acute mental health crisis. On a busy shift this is the biggest group.
  4. Standard (green) — target of two hours. Stable injuries and illnesses that still need hospital-level care: a wrist that is probably broken but looks straight, a cut that needs closing, tummy pain with normal observations.
  5. Non-urgent (blue) — target of four hours. Problems that a pharmacy, GP or urgent treatment centre could usually sort: minor grazes, an unchanged long-term symptom, a rash with no fever. If this is you, it is genuinely worth asking whether an urgent treatment centre or a call to NHS 111 would get you help sooner.

Within a band, people are broadly seen in order of arrival — but anyone placed in a higher band goes ahead of everyone below. On a rough night, a steady flow of ambulances can hold the green and blue queues almost still for hours. Frustrating, yes. Unfair, no.

The category is not a life sentence

Triage is a snapshot, and bodies change. If your pain climbs, you become breathless, you feel faint, or anything new appears while you wait, go back to the desk and say so plainly. Nurses can and do re-assess people, and being moved up a band on re-triage is routine, not a favour. Suffering in silence helps nobody — least of all you.

The reverse also happens: someone whose observations settle after early treatment may effectively drop in priority. That, too, is the system working.

What else stretches the wait

Even two people in the same band can have very different visits. The other moving parts include:

  • How full the department is — both your band and every band above you
  • Who is on shift — staffing thins overnight and thickens at handover times
  • Whether the wards have space — when admitted patients cannot move on, everything behind them slows
  • Which specialists you need — waiting for the on-call orthopaedic or psychiatric team adds its own queue
  • The scanner and lab workload — one CT scanner serves the whole hospital

For what the published numbers do and do not capture, see how waits are measured, and for tactics that genuinely shorten a visit, read cutting your A&E wait.

Helping the nurse get it right

You cannot pick your own category, but you can make sure it is based on good information:

  • Tell it straight. Neither minimise ("it's probably nothing") nor inflate. The nurse needs the real picture.
  • Lead with the history that matters. Chest pain plus a previous heart attack changes everything — say it in the first sentence.
  • Hand over a medicines list. What you take shapes what could be wrong with you; our packing checklist explains the easiest ways to carry one.
  • Ask which band you are in. You are entitled to know, and it helps you plan the hours ahead.
  • Bring a second pair of ears if you can — someone who knows your normal self is a powerful witness.

When triage looks different

Children are scored against age-specific charts, because a toddler's normal heart rate would alarm anyone reading an adult chart. Knowing your child's age in months and rough weight speeds things up — more in our guide to taking a child to A&E.

Older people often show illness sideways: a chest infection appears as a fall, sepsis appears as new muddle. If you are with an older relative, describe the change from their usual self — "on Tuesday she was doing the crossword, today she can't find the kitchen" tells the nurse more than any single reading. Our older adults guide goes deeper.

Mental health crises are ranked with the same urgency framework, weighted towards physical risk — an overdose is treated as high priority, while severe distress without physical danger may be banded lower. That can feel cold; it is not a judgement on how much you are suffering. See our mental health emergencies guide.

The short version

  • A&E calls patients by clinical urgency, never by arrival time.
  • A brief nursing assessment — observations, questions, a quick look — places you in one of five bands with targets from immediately to four hours.
  • Your band can change: report any worsening straight away.
  • Honest, specific information and a medicines list are your best tools at the desk.
  • Placed in the lowest band? A nearby alternative service may treat you far faster than the bottom of the A&E queue.