The systematic review of presyncope literature found that presyncope should be treated the same as syncope in terms of work up and disposition.
“In conclusion, the prevalence of short-term serious outcomes among ED patients with presyncope ranges from one in four to one in 20, with arrhythmia being the most common serious outcome. Our review indicates that presyncope may carry a similar risk to syncope, and hence, the same level of caution should be exercised for ED presyncope management as that of ED syncope.”
References
Serious outcomes among emergency department patients with presyncope: A systematic review
