"Furthermore, among the CVD+ population, with a median age of just 30 years, the worrisome symptoms of palpitations, presyncope/syncope, stroke, and chest pain were present in a concerning 33% ...

[7] The mild presyncope was described according to Sheldon et al. as a light-headed spell not associated with other symptoms or visual blurring, and not interfering with the ability to carry on ...

Results: At least one syncopal event during operation was reported by 4.7% and presyncope by 14.8% of the studied population. All but one subject reported prodromal symptoms before syncope.