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12-Lead ECG Quiz

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1. Reciprocal ST-segment changes can be noted where?




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2. True or False? A 12-Lead ECG can be performed by only using a 3-Lead monitor?




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3. A physiologic Left axis deviation?




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4. A normal axis?




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5. ST-segment depression or "T" wave inversion may be indicative of what?




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6. A pathological "Q" wave, must be greater than 25% of overall QRS depth, is usually indicative of what?




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7. A pathological Left axis deviation?




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8. If axis deviates away from the injured myocardium, then a lateral infarct would most likely yield a what type axis deviation?




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9. ST-segment elevation of at least 2mm in any anatomically contiguous leads suggests what?




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10. Which leads are known as the precordial or chest leads?




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11. Leads I, AvL, V5, and V6.




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12. LA(black), LL(red), RA(white), and RL(green). Salt(RA), pepper(LA), ketchup(LL), and relish(RL).




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13. Pericarditis.




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14. When moved to the opposite side V4 now becomes V4R, and a rapid Right sided 12-Lead ECG may be performed.




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15. +90 to 180 degrees. (down, up, up)




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16. Leads V3 and V4.




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17. The RCA(right coronary artery) and the LCA(left coronary artery), which then branches into the LAD(left anterior descending artery) and the LCX(left circumflex).




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18. Leads II, III, and AvF.




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19. -90 to 180 degrees. (all down)




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20. Any QRS duration greater than 120mm constitutes a BBB.





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