May 2026 exceptional surveillance of anaphylaxis: assessment and referral after emergency treatment (NICE guideline CG134)

Overall proposal

Following consultation with topic experts we propose to:

  • replace NICE's guideline recommendations about post-anaphylaxis observation periods in adults aged 16 years and older and children, with the Resuscitation Council UK's (RCUKs) recommendations about a risk-stratified approach to the length of in-hospital observation following anaphylaxis.

  • not update recommendations about the timing and frequency of blood sampling.

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