Rule 1 (Sheldon 2006201 and Romme 2009187) - no knowledge of symptom burden: scoresRule 2 (Graf 2008)93: scores for prediction of vasovagal syncope or psychogenic pseudosyncope
  • ECG P-wave duration (‘P- waveCat’): score 0 for duration below 120 ms and 1 for duration 120 ms and above or non-sinus rhythm
  • blue colour noted by bystander (−4)
  • age at first syncope at least 35 years (−3)
  • Age (term ‘AgeCat’): score 1 for age 45 years and below, 2 for age over 45 and below 65 years and 3 for age over 65 years
  • remembers something about the TLoC episode (−2)
  • presyncope or syncope with prolonged standing or sitting (+1)
  • Number of prodromes (‘ProdCat’): score 0 for 1 or 0 symptoms, and score 1 for 2 or more symptoms
  • sweating or a warm feeling before TLoC (+2_
Apply formula
2×ProdCat-P-waveCat-AgeCat+2
Patients are classified as having a vasovagal syncope or psychogenic pseudosyncope if the total points score is 0 or more
  • presyncope or syncope with pain or medical procedure (+3)
Patients classified as having vasovagal syncope if the total points score is −2 or more

From: 3, Initial assessment and diagnosis of people who had TLoC

Cover of Transient Loss of Consciousness (‘Blackouts’) Management in Adults and Young People
Transient Loss of Consciousness (‘Blackouts’) Management in Adults and Young People [Internet].
NICE Clinical Guidelines, No. 109.
National Clinical Guideline Centre for Acute and Chronic Conditions (UK).
Copyright © National Clinical Guideline Centre for Acute and Chronic Conditions, 2010.

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