* Pos: I, II, V4, V5, V6, AVF; Neg: AVR * Best Seen: II and V1; * Duration: PR: 0.12 - 0.20 msec; - < 0.12 msec: consider: - > 0.20 msec: consider: - Normal varient (large person); - Problem AV node: ? AV block, drug effect; - Intra Atrial Cond. defect:
Hyper K, Large Atrium - Bifasicular Block; * Notching/Bipolar pattern: Atrial hypertrophy * Inverted P wave: - II, III, aVF: implies Ectopic Low Atrial Rhythm /Junctional; - I (and V5,6) or < 80^/ > 0^: - Arm Lead Reversal, Dextrocardia, Ectopic Left Atrial Rhythm;
