EKG Worksheet Answer each question below. Use complete sentences when providing short answer responses. 1. You are the AGACNP in the emergency room. A 55-year-old Caucasian male with a past medical history of HTN, thyroid cancer, and diverticulitis presents with crushing chest pain. His chest pain developed one hour ago after eating a large steak and potato dinner. He states the pain is 10 out of 10 and is not relieved by antacids. He is also diaphoretic and anxious. You review his 12 lead EKG, as per below. Using the EKG strip, answer questions A-D. A. What part of the area of the heart is showing an evolving infarct? a. Inferior b. Anterior c. Lateral d. Posterior B. Which leads show ST elevation? a. II, III, AVL b. V1-V3 c. II, III, AVF d. II, III, AVR C. Where would you expect to find reciprocal changes? a. Reciprocal changes in at least AVL b. Reciprocal changes in lead III c. Reciprocal changes in lead IV and V d. There are No reciprocal changes. D. What coronary artery is the likely cause? a. The Right Coronary artery in most cases as it is usually dominant, however in some patients the left circumflex is dominant and thus the culprit for an inferior MI. b. The left anterior descending c. The septal artery d. none of the above 2. A 67-year-old female is your established cardiology patient. She is following up with you regarding her uncomplicated mitral valve stenosis. During the visit, she happens to mention that she has suffered 9 hours of chest pain and sweating, which takes you by surprise. Your patient further describes the pain as both gnawing and intermittent. She thought she was experiencing heartburn, but admits that she has never experienced heartburn before, so she is not sure. You perform a 12-lead EKG immediately and call 911. Interpret the EKG recording below. What area of the heart is involved, what is your diagnosis, and which coronary artery is affected? a. Anterior part of the heart; this is an ST elevation myocardial infarction (STEMI); and the Left anterior descending is affected b. Inferior; this is a Non ST elevation MI (NSTEMI), and the right coronary artery is affected c. Posterior; this is not an MI but does show ischemia, and the circumflex is involved d. This simply pericarditis and thus the affected coronary arteries are not affected, the heart strain distribution is diffuse and global 3. What qualifies for “significant” ST elevation or depression in a 12 lead EKG- in the limb leads_(i)._____________? What is significant for the or the precordial leads_(ii)._____? These changes must be present in at least_(iii)___________consecutive leads in order to be considered diagnostic of myocardial pathology. 1. (i))1mm in a limb lead, (ii)1mm in precordial lead, (iii)and must be present 3 consecutive leads 1. (i)1mm in a limb lead, (ii)2mm in precordial lead, (iii)and must be present 2 consecutive leads 1. (i) 2mm in a limb lead; (ii)) 2 mm in a precordial lead, (iii) must be present in 3 consec ...