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Cardiology Emergency Medicine

Boston Syncope Criteria

Identifies high-risk syncope features requiring hospital admission.

Sustained SBP <90 mmHg, SOB, HR <50 or >100, chest pain, or radiographic pulmonary oedema

New focal neurological deficit or signs of subarachnoid haemorrhage

New arrhythmia, new ST changes, complete HB, new prolonged QTc, new LBBB or WPW

SBP <90 or HR <40 persisting without clear, reversible cause

Haematocrit <30%, severe diarrhoea/vomiting, blood loss

References

Related

Curated clinical cross-links plus same-class fallbacks.

Decision support only — verify against MDCalc, NICE, or your local guideline before clinical use.