Human Anatomy Early Summer Case Study 2Chief Complaint:68-year-old man who collapsed during exertion.History:Roger Crockett, a 68-year-old man with a 40-pack-year smoking history andrecent complaints of angina (sub-sternal chest pressure) upon exercising, collapsedwhile mowing his lawn. Paramedics arriving at the scene found him unconscious, notbreathing, and without a pulse. CPR was successfully performed and Roger wastransported to the hospital. An ECG was suggestive of an anterior wall myocardialinfarction, and he was given an intravenous solution of tissue plasminogen activator(TPA). Elevated blood creatine phosphokinase (CPK) levels measured over the next 2days confirmed the diagnosis. Coronary angiography was performed a week later,revealing the following results:Circumflex artery:20% blockedRight coronary artery:15% blockedLeft anterior descending artery (LAD):95% blocked("Anterior intraventricular artery")Questions:1.