Exclusion criteria
cerebrovascular accident/transient ischaemic, TLOC.Inability, Haemorrhage, syncope, pulmonary embolus, Arrhythmia, Head trauma, vasovagal syncope
ACUTE MYOCARDIAL INFARCTION, HAEMORRHAGE, SUBARACHNOID HAEMORRHAGE, RECRUITMENT, PULMONARY EMBOLUS, EPILEPTIC SEIZURE, ARRHYTHMIA, HYPOGLYCAEMIA, VASOVAGAL SYNCOPE, POSTURAL HYPOTENSION
Obvious underlying cause after assessment.Features of vasovagal syncope (see Arrhythmia on prehospital or hospital ECG as likely cause of syncope.Postural hypotension (symptomatic postural drop >20 mm Hg AND suggestive history).Confirmed diagnosis of pulmonary embolus or acute myocardial infarction.Radiological diagnosis or clinical signs/symptoms of cerebrovascular accident/transient ischaemic attack or subarachnoid haemorrhage.Evidence of:Haemorrhage.Alcohol or illicit drugs.Epileptic seizure.Hypoglycaemia.Head trauma.Other obvious cause of syncope as presumptive cause of TLOC.Inability to consent.Previous recruitment into the study.Patient in custody or prison.Aged<16 years.Patient does not reside within local health board and will therefore be lost to medical record follow-up.Five or more self-reported episodes of syncope in previous 4 weeks.Pregnancy is not an exclusion criteria.