Problem
Coronary artery disease (CAD) is a progressive disease. Mrs. Jones has been diagnosed with coronary artery disease for almost a year now. Today, she comes to the ER after participating in a walking program with complaints of chest pain. Mrs. Jones describes the chest pain as "pressure", rating it 7/10. She is triaged, moved to a treatment room and is placed in a gown.
What order will the emergency room (ER) nurse implement first?