. Author manuscript; available in PMC: 2010 May 1.

Published in final edited form as: Heart Rhythm. 2009 Feb 14;6(5):644–651. doi: 10.1016/j.hrthm.2009.02.018

Table 4.

Comparison of Electrogram Characteristics and DE-MRI

	Normal EGM	Abnormal EGM	Fractionated EGM	EGM with IP
Bipolar amplitude (mV)	5.33±2.71	1.39±0.77	0.32±0.16	0.16±0.22
Unipolar amplitude (mV)	11.10±3.85	6.55±3.31	3.45±1.95	1.13±1.55
Transmurality (%)	0.05±0.18	0.32±0.39	0.68±0.32	0.77±0.29
Width (ms)	64.2±19.7	87.0±22.6	119.2±36.0	255.2±134.3

Abbreviations: as above. In each line, values were compared two by two. The p values are all <0.0001, except for transmurality: IP vs. fractionated (p = 0.002).