A 50-year-old man is complaining of chest pain that began while he was clearing underbrush on a vacant lot. He describes the pain as a “heavy pressure” that has lasted 5 to 10 minutes. Vital signs...

A 50-year-old man is complaining of chest pain that began while he was clearing underbrush on a vacant lot. He describes the pain as a “heavy pressure” that has lasted 5 to 10 minutes. Vital signs are: BP = 140/95, pulse = 82, respirations = 16. He has no previous cardiac history. EKG shows Normal Sinus Rhythm. The chest pain is most likely due to:

a. Dysrhythmias                c. Coronary insufficiency

b. Pulmonary embolus d. Congestive heart failure