1. rhythm regular or irregular 2. determine the heart rate 3. do you have p waves before every QRS 4. Measure the PR interval 5. Measure the QRS duration 6. Are there any early or extra beats 7. is there normal r wave progression in V1-V6? 8. Are the ST segments elevated or depressed? 9. Are there any abnormal Q waves? 10. Are the T waves of normal size? 11. Are there any U waves? 12. Is there evidence of myocardial ischemia, injury, or infarction? 13. Name this EKG. \#7- 63 year-old female with chest tightness 18 hours ago.