Useful info here...a whopping 47 "do's" and "do nots" at the link....Our former ER doc will be along shortly to comment, I imagine.
https://www.radajonesmd.com/47-tips-to-keep-you-away-from-my-er/?fbclid=IwAR1u_2BOVpNr_dZdV4Hzykm4E-EkYKHkHVGadYjFRkgfcBpEZNCt0D3oPkQ