Sudden neurocardiogenic syncope

Clinical features

• This presents as sudden vasovagal syncope
• The syncope presents without a prodrome
• It usually occurs in older people
• It occurs whilst seated in a fifth of cases
• About 5% of cases occur whilst driving
• The subjects are less likely to feel unwell after the event

References

1. Deharo JC, Guieu R, Mechulan A, et al. Syncope without prodromes in patients with normal heart and normal electrocardiogram: a distinct entity. J Am Coll Cardiol 2013; 62:1075-1080. 
2. Graham LA, Kenny RA. Clinical characteristics of patients with vasovagal reactions presenting as unexplained syncope. Europace 2001; 3:141-146.
3. Wieling W, Thijs RD, van Dijk N, Wilde AAM, Benditt DG, van Dijk JG. Symptoms and signs of syncope: a review of the link between physiology and clinical clues. Brain 2009; 132:2630-2642.

Related checklists

• Syncope: classification
• Neurocardiogenic syncope
• Cardiac syncope
• Carotid sinus hypersensitivity (CSH)
• Nocturnal supine vasovagal syncope
• Exertional syncope
• Brugada syndrome
• Deglutition syncope
• Supine hypertension-orthostatic hypotension (SH-OH) syndrome
• Miscellaneous syncope types