Im sorry but why would you be on this website if you had any suspicion the guy was having MI, especially a STEMI. I just don't get it. Know your basic 12 leads. Im not the best with axis deviations and the really advanced stuff, but know the leads, and know when to spot ischemia in those leads. ST elevation, depression ect. And don't be on all nurses asking for advice when your in the middle of a situation. Come on, but I'm sorry, its just plain stupid. OK so your waiting for a call back from the doc, wouldn't you be putting the basics into place? Oxygen and ASA at the very least? Assesing his chest pain in depth. Yes he may have mental issues, but that doesn't preclude him from having an acute cardiac issue and you really need to explore it in depth. So what happened, did he get sent to the hospital, did the doc come see him? I always take chest pain seriously. Often its nothing, and can be chalked up to anxiety, other things, but what if its not. STEMI, PE, dissecting aneurysm at the worst. Pulled muscle, anxiety at the very least. Id like to understand your rationale for posting this here.