[Verified Answer]: A 58 year old man is brought to the…

A 58 year old man is brought to the emergency department by ambulance with the chief complaint of severe substernal chest pain that does not radiate. He is short of breath and nauseous. He states that he has never had chest pain before and started feeling the pain as he was going up a steep flight of stairs at a friend’s house. He has a BMI of 25, does not smoke or drink and considers himself to be of good general health. His temperature is 98.90FF, blood pressure is 136/84,respiratory rate is 24/min and his pulse is 108. There are no murmurs. He has no crackles or rales and his pain is not exacerbated by palpation or on taking a deep breath. The rest of his physical examination is unremarkable. He takes no medications.1. Does he have pleuritic chest pain? Why or why not?2. What systems should be considered in the differential diagnosis?3. What is the differential diagnosis?4. What are the initial diagnostic tests that should be done to investigate his case?