Emts respond to a known heroin abuser who is unresponsive. if they give naloxone (narcan) to this patient, the emts should recall that:

The EMTs should recall that: naloxone administration could cause seizures in this patient.
Naloxone is the antidote that can be used in a patient who abuses heroin. Naloxone will block opioid medication and cause reverse effect. It also might cause heart rhythm changes or pulmonary edema in some case.