2024 ECG ORIENTATION KAISER
EXAM WITH CORRECT ANSWERS
DEPOLARIZATION - CORRECT ANSWERS-Movement of ions (Na+, Ca+, K+)
across cell membrane causing inside of cell to become more positive,
electrical conduction results in contraction. Na+ channels open. Positive
inside, negative outside.
REPOLARIZATION - CORRECT ANSWERS-movement of ions across cell
membrane where inside of cell is restored to its negative charge. Sodium
channels close. Potassium channels open. Active transport by sodium-
potassium pump
PAC - CORRECT ANSWERS-often regular, when P waves present
SVT - CORRECT ANSWERS-150-250 bpm. P waves hidden by QRS
non symptomatic tachycardia - CORRECT ANSWERS-vagal maneuvers,
adenosine, BB, CCB,
treatment of tachycardia - CORRECT ANSWERS-adenosine 6mg rapid IVP.
Second dose; 12mg IVP
amiodarone 150mg IV infusion over 10 min
procainamide 20-50mg /min IV infusion
inverted P wave - CORRECT ANSWERS-impulse formed in or near AV junction
toward atria
causes of vfib - CORRECT ANSWERS-Acute MI, myocardial ischemia, drug
toxicity or overdose, hypoxia, and other causes
3rd degree AV block - CORRECT ANSWERS-atria and ventricles beat
independently of each other
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