“…Disorders causing T-LOC are diverse and are reported to occur at different rates illustrtaing the scope of the necessary competencies. Results of 10 SUs 13,17,19,23,41,45,55,56 (W. Wieling and J.G. van Dijk, personal communication) yielded the following categories (mean and range): reflex syncope (59%, 46 -68), cardiac (10%, 1 -35), orthostatic hypotension (9%, 1 -19), unexplained syncope (11%, 5 -18), psychogenic pseudosyncope (4%, 0 -12), and epileptic seizures (1%, 0 -5).…”