You are here Home Glossary of technical terms Glossary of technical terms vasovagal episode (syncope, fainting) Listen Print Share Twitter Facebook Email An episode that involves all of the following: pallor and unresponsiveness, reduced responsiveness or feeling light-headed bradycardia resolution of symptoms with a change in position (supine position, head between knees or limbs elevated) A vasovagal episode may occur while vaccine is being administered or shortly after (usually within 5 minutes). Page history Last updated 11 June 2018 Last reviewed 11 June 2018 Is there anything wrong with this page? Help us improve the Australian Immunisation Handbook What you were doing? (required) What went wrong? (required) Leave this field blank