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Lesson

BRUE: The Resolved Infant Event

10 min Medical Skip to quiz

Objective: Assess an infant after a brief change in color, tone, or breathing. The baby may look well now. Transport for evaluation. Do not use hospital lower-risk rules as a field refusal tool, and do not promise the family it was nothing.

Why this matters

Parents call because the baby turned blue, went limp, or stopped breathing, and now the baby looks normal. That history is the emergency. In 2016 the American Academy of Pediatrics replaced “apparent life-threatening event,” called ALTE, with “brief resolved unexplained event,” called BRUE. The new name is easy to hear as “nothing happened.” It is not a clearance. Do not promise the family it was nothing.

Lower-risk criteria exist so a clinician, after a history and an exam, can limit testing. They are not a checklist for refusing transport in a living room. Do not use them as a field refusal tool.

Key points
  • Under 1 year, a brief change in color, breathing, tone, or alertness that has now resolved still needs a medical evaluation. A normal exam right now does not erase the event.
  • If you can explain the event, such as an obvious choking episode that fits choking care, say that. Do not call an unexplained event reflux because the family hopes it is.
  • Do not use the AAP lower-risk list to decline care. Age under 60 days, prematurity, a long event, or CPR by a trained provider are among the features that make the hospital pathway higher risk.
Verbalize
  • The baby looks well now. The event still needs a clinician who can finish the exam.
  • I am not calling this low-risk on scene.
  • Tell me the color, the tone, how long it lasted, and what you did.

Clinical sequence

  1. Assess appearance, work of breathing, and circulation first. A baby who still looks sick is not a resolved event. Treat what you see.
  2. Check sugar if the infant is altered or the protocol includes it. Count the respiratory rate for a full minute. Look for trauma, fever, and a bulging fontanelle. That is the soft spot on the head.
  3. Take the history from the person who saw it. Ask about color, breathing, tone, responsiveness, how long it lasted, and whether anyone did CPR or hard stimulation.
  4. Look for a cause you can see: choking, a seizure that is not actually over, bronchiolitis, or abuse. Bronchiolitis is a viral illness in the small airways. If you find a cause, treat that cause. If you do not, do not invent reflux as the diagnosis.
  5. Transport. Caregivers who refuse need your usual capacity and risk conversation, including the chance of a repeat event. Do not quote “low-risk BRUE” as reassurance. Do not promise that it was nothing.

Teaching points

  • The AAP definition requires that a proper history and exam found no explanation. That exam is broader than a field set of vital signs.
  • Pale skin or blue skin counts. Redness from crying does not, by itself.
  • Be kind about bystander CPR. A frightened parent who breathed for the baby is a witness, not a problem.

Common errors

  • Leaving a well-appearing infant at home because the event “already stopped.”
  • Using the lower-risk age and duration rules as a refusal script.
  • Calling it a BRUE when the baby is still working to breathe.

Practice

One-minute check

A 3-week-old is pink and asleep. Twenty minutes ago the parent says the baby was blue and limp for “a few seconds,” and the parent shook the baby awake. Say what you will not promise, and where this infant needs to go.

Sources & Further Study

Named guidelines for further study. They are not clinical orders and do not replace your protocol or medical direction.

  • Tieder JS, et al. Brief resolved unexplained events (formerly apparent life-threatening events) and evaluation of lower-risk infants. Pediatrics. 2016;137(5):e20160590. Lower-risk criteria follow a clinician exam. They are not a field clearance.
  • NASEMSO National Model EMS Clinical Guidelines (2022) — pediatric assessment and refusal stay inside local policy

Education only. Apply learning within your protocols and medical direction. This is not clinical care guidance.

Check Your Understanding

Questions drawn only from this lesson. After you check, the key is highlighted. Education practice — not a certification exam.

1. A BRUE, in the 2016 AAP definition, is:
2. Lower-risk BRUE criteria are used to:
3. The old name ALTE should be:
4. Caregiver CPR or vigorous stimulation before you arrived means:
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