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curriculum additions

2011-2012 additions to the curriculum

QuestionAnswer
Acute Injury Myocardium is dying due to lack of O2, this is the stage usually called a "MI"
Axis Direction of the vector of depolarization, normal is 0 to 90o
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.
Early Repolariztion Can mimic ST elevation, this is commonly seen in healthly black men as a normal condition
Ischemia Heart is starved for O2 but no permanent injury
Pericarditis Generalized elevation of the ST segments with an upward concavity in many leads including all three standard leads
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.
Wolf-Parkinson-White Characterized by the Delta wave & very small ' PR ' interval & wide ' QRS '.
AAA Aortic Abdominal Aneurysm
ACE Angiotensin Converting Enzyme