Upon questioning, your new admit with a diagnosis of rule-ou…

Upon questioning, your new admit with a diagnosis of rule-out MI states his pain is an “8” out of “10” and he describes it as “heaviness” in the middle of his chest that radiates to his left elbow. He also complains of nausea and appears restless, pale, and diaphoretic.  His vital signs are: BP – 94/50, HR – 110, R – 26, O2 sat. – 99% on 2L of O2 per nasal cannula.  He has a saline lock in place.  Assuming you have orders for all of the following, what would you do first?