A case posted for buccal mucosa graft urethroplasy.prexy 'then induction with propofol100mg.tramadol 100mg.glyco-p.2mg.nasal intubation under atracuronium50mg.tube positon checked.after 15mint patinet went brady not responding to atropine.adr.isopranaline.aggresive cpr 1hour .finally patient collapsed.no signicant past medical history.no ecg and serum electrlyte available before sx.age50years male muslim.plz share the possiblity of cardiac arrest