▁( cor on ary ▁ang i ogram ) ▁is ▁being ▁performed . ▁The ▁exact ▁cause ▁of ▁card iac ▁synd rome ▁X ▁is ▁unknown . ▁Ex plan ations ▁include ▁micro vas cular ▁d ys function ▁or ▁ep ic ard ial ▁a ther os cl eros is . ▁For ▁reasons ▁that ▁are ▁not ▁well ▁understood , ▁women ▁are ▁more ▁likely ▁than ▁men ▁to ▁have ▁it ; ▁however , ▁h orm ones ▁and ▁other ▁risk ▁factors ▁unique ▁to ▁women ▁may ▁play ▁a ▁role . ▁ ▁Di agn osis ▁ ▁For ▁sympt om atic ▁people , ▁stress ▁e ch oc ardi ography ▁can ▁be ▁used ▁to ▁make ▁a ▁diagn osis ▁for ▁ob struct ive ▁coron ary ▁ar tery ▁disease . ▁The ▁use ▁of ▁e ch oc ardi ography , ▁stress ▁card iac ▁imag ing , ▁and / or ▁advanced ▁non - in vas ive ▁imag ing ▁is ▁not ▁recommended ▁on ▁individuals ▁who ▁are ▁exhib iting ▁no ▁sympt oms ▁and ▁are ▁otherwise ▁at ▁low ▁risk ▁for ▁developing ▁coron ary ▁disease . ▁ ▁The ▁diagn osis ▁of ▁" Card iac ▁Sy nd rome ▁X " ▁– ▁the ▁rare ▁coron ary ▁ar tery ▁disease ▁that ▁is ▁more ▁common ▁in ▁women , ▁as ▁mentioned , ▁is ▁a ▁diagn osis ▁of ▁ex clusion . ▁Therefore , ▁usually , ▁the ▁same ▁tests ▁are ▁used ▁as ▁in ▁any ▁person ▁with ▁the ▁sus pected ▁of ▁having ▁coron ary ▁ar tery ▁disease : ▁ ▁Bas eline ▁electro card i ography ▁( E CG ) ▁ ▁Ex erc ise ▁E CG ▁– ▁Str ess ▁test ▁ ▁Ex