Key Points - ECGs
Benign Early Repolarization
Key Points
-precordial
-mostly V2-V4
-never in limb leads alone
-concave up
-J point notching/fishhook
-small STE (<3.5mm)
-tall QRS & TW
-age <45
J point elevation
-an EKG finding, not a diagnosis
-differential includes early repol, hypothermia, Brugada, STEMI
-isolated J point elevation outside the precordial leads is associated
with idiopathic V fib
Measuring the STE
-use PR as baseline
-atria continue to repolarize for 60-80ms after QRS
-also, sometimes you lose the TP if P is shortly after T
OR
-measure 2 boxes after J point
references:
Smith SW, Zvosec DL, Sharkey SW, & TD Henry. (2002). The ECG in
acute MI: an evidence-based manual of reperfusion therapy
Wang K, Asinger RW, Marriott HJL. ST-segment elevation in conditions
other than acute myocardial infarction. N Engl J Med (2003)
Posted
on Friday, November 27th, 2009 at 12:29 am by Lisa. Filed under
Arrhythmias, ACS, Blog.
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