ECG Quest

Fragmented Narrow QRS

Criteria

R wave count > 2

Causes

Old Anterior MI
QRS fragmentation is a good sign of ischemic heart disease, and analogous to Q-waves of MI.

See Also

RSr' rSR' Notched Wide S Wave Notched Wide R Wave Pseudo R' Wave Terminal QRS Distortion Notched S Wave Nadir

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