简介:Duringsurgery,aheartbeatdoesn’tjusttellwhetherapersonisdeadoralive-itcanwarnofbigproblemsthatcomeupquitesuddenly.Keepingwatchforsubtleirregularitiesintheheart’selectricactivitycanhelpsaveapatient’slife.Buttoday’stechnologycan’tgiveasmuchdetailasdoctorswant