▁ske let al ▁mus cles , ▁potentially ▁resulting ▁in ▁card iac ▁arrest . ▁Cond itions ▁having ▁sus cept ibility ▁to ▁su x am eth on ium - indu ced ▁high ▁blood ▁pot ass ium ▁are ▁burn s , ▁closed ▁head ▁injury , ▁ac idos is , ▁Gu illa in – B arr é ▁synd rome , ▁c ere br al ▁stroke , ▁d row ning , ▁severe ▁int ra - ab dom inal ▁se ps is , ▁massive ▁tra uma , ▁my op ath y , ▁and ▁t et anus . ▁ ▁S ux am eth on ium ▁does ▁not ▁produce ▁un cons cious ness ▁or ▁an est hes ia , ▁and ▁its ▁effects ▁may ▁cause ▁considerable ▁psych ological ▁dist ress ▁while ▁simultaneously ▁making ▁it ▁impossible ▁for ▁a ▁patient ▁to ▁communicate . ▁Therefore , ▁administration ▁of ▁the ▁drug ▁to ▁a ▁conscious ▁patient ▁is ▁contra ind ic ated . ▁ ▁Hyper k alem ia ▁ ▁The ▁side ▁effect ▁of ▁high ▁blood ▁pot ass ium ▁may ▁occur ▁because ▁the ▁ac et yl ch oline ▁re ceptor ▁is ▁pro pped ▁open , ▁allowing ▁continued ▁flow ▁of ▁pot ass ium ▁ ions ▁into ▁the ▁ext rac ell ular ▁fluid . ▁A ▁typical ▁increase ▁of ▁pot ass ium ▁ion ▁ser um ▁concentration ▁on ▁administration ▁of ▁su x am eth on ium ▁is ▁ 0 . 5   mm ol ▁per ▁liter . ▁The ▁increase ▁is ▁trans ient ▁in ▁otherwise ▁health y ▁patients . ▁The ▁normal ▁range ▁of ▁pot ass ium ▁is ▁ 3 . 5 ▁to ▁ 5