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2011-2012 additions to the curriculum

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Question
Answer
Acute Injury   Myocardium is dying due to lack of O2, this is the stage usually called a "MI"  
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Axis   Direction of the vector of depolarization, normal is 0 to 90o  
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Bundle Branch Block   Can determine which bundle branch is blocked by using lead V1. A left BBB will be a negative deflection .12 secs or greater. A Right BBB will be a positive deflection .11 secs or greater. If pt has a LBBB, you can not diagnose MI from the 12 lead EKG.  
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Early Repolariztion   Can mimic ST elevation, this is commonly seen in healthly black men as a normal condition  
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Ischemia   Heart is starved for O2 but no permanent injury  
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Pericarditis   Generalized elevation of the ST segments with an upward concavity in many leads including all three standard leads  
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Subendocardial Infarction   The subendocardium is especially vulnerable to infarct because being close to the ventricular cavity, it is subject to high pressure & is first effected when coronary perfusion is inhibited. Cannot be easily recognized from EKG.  
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Wolf-Parkinson-White   Characterized by the Delta wave & very small ' PR ' interval & wide ' QRS '.  
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AAA   Aortic Abdominal Aneurysm  
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ACE   Angiotensin Converting Enzyme  
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