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

Differential diagnoses: other causes of sudden syncope

Investigations

Synonym

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