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12-Lead EKG Chapter 5 Worksheet Name _________________________________________________________ Date ________________ Match the following using the work bank. ____1. Leads V 3 and V 4 ____2. Where the end of the QRS complex makes a sudden sharp change in direction ____3. Significant EKG wave changes seen in 2 anatomically contiguous leads (see the same area of the heart. ____4. ST segment elevation curved upward; “frowny face.” ____5. Wave form that now appears to hold water; duration is longer than 0.12 seconds ____6. A term that “sees” the same area of the heart ____7. Leads I, aVF, V5 and V6 ____8. “Tombstone” T wave; more than 50% of the preceding R wave ____9. Leads II, III, and aVF ____10. Leads V1 and V2 Word Bank A. B. C. D. E. Anterior Wall Leads Contiguous Leads Coved ST Segment Hyperacute Phase Indicative Changes F. Inferior Leads G. J Point H. Lateral Leads I. Pathologic Q Wave J. Septal Leads 12-Lead EKG Chapter 5 Worksheet Name _________________________________________________________ Date ________________ Select the best answer. 1. The development of abnormal Q waves provides evidence that tissue death has occurred. a. True b. False 2. T wave inversion suggests a. Delayed ventricular depolarization b. Presence of injury c. Presence of ischemia 3. A normal EKG does not rule out an AMI, particularly in the early hours of a coronary artery occlusion. a. True b. False 4. Changes seen in the wall of the heart opposite the location of the infarction is a. Contiguous lead changes b. Reciprocal changes c. NSTEMI 5. With an anterior wall MI ST segment elevation in leads ________ occurs. a. V3 & V4 b. V1 & V2 c. V1- V6 6. With a lateral wall MI, ST segment elevation in leads ______ occurs. a. I, aVL, aVF b. II, III, aVF c. I , aVL, V5 & V6 7. With an inferior wall MI, ST segment elevation in leads _____ occurs a. I, aVL b. V1- V6 c. II, III, aVF 12-Lead EKG Chapter 5 Worksheet Name _________________________________________________________ Date ________________ 8. With posterior wall MI, ST segment depression in leads _____ occurs. a. V1 & V2 b. V1 – V6 c. aVL and V1 9. Reciprocal changes for an inferior MI are seen in leads a. I, aVL b. V1 & V2 c. II & III 10. With an anterior wall MI, the affected coronary artery is the a. Left circumflex b. Left anterior descending/diagonal branch c. LAD/septal branch 11. With an inferior wall MI, the affected coronary artery is the a. LAD b. RCA/posterior descending branch c. LAD/diagonal branch 12. With a lateral wall MI, the affected coronary artery is the a. LCA b. RCA 13. About 80% of patients with inferior infarction have some involvement of the right ventricle a. True b. False 14. To “look” directly at the right ventricle, chest leads are identical to placement of the standard chest leads except on the right side of the chest a. True b. False 12-Lead EKG Chapter 5 Worksheet Name _________________________________________________________ Date ________________ 15. The clinical triad of right ventricle infarction (RVI) includes a. Hypotension, JVD, and clear lung sounds b. Hypertension c. Clear lung sounds and JVD 16. ST segment depression is seen with reciprocal changes as well as a. Digitalis b. “ischemia at a distance” c. Movement d. A & B 17. One exception to the “classic” pattern of indicative change is a. Mitral stenosis b. Apical infarction c. Coughing and movement 18. The presence of extensive collateral circulation may cause apical infarctions only. a. True b. False 19. When EKG changes suggest an inferior infarction (ST segment elevation) in leads II, III or aVF a _____ should be suspected. a. RVI b. LVI c. Inferolateral MI 20. A lateral wall MI often occurs as an extension of an anterior or inferior wall MI. a. True b. False