. Author manuscript; available in PMC: 2015 Jan 8.

Published in final edited form as: Heart Rhythm. 2010 Jun 15;7(9):1207–1215. doi: 10.1016/j.hrthm.2010.06.018

Table 2.

Significant differences in fractionation parameters for paroxysmal versus persistent atrial fibrillation

Parameter	LSPV	LIPV	RSPV	RIPV	ANT	POS
amp-1^st 8s	^**	—	^*	—	—	^*
upsl-1^st_8s	^**	^*	^*	—	^*	^*
dnsl-1^st_8s	^**	^*	^*	—	^*	^*
wid-1^st_8s	^**	—	^*	^*	^*	^*
amp-2^nd_8s	^**	—	^*	—	—	^*
upsl-2^nd_8s	^**	^*	^*	—	^*	^*
dnsl-2^nd_8s	^**	^**	—	—	—	^**
wid-2^nd_8s	^**	^*	—	^*	^**	^**
abs-1^st_8s	^*	—	^*	—	—	—
abs-2^nd_8s	^*	—	^*	—	—	—

1^st, 2^nd = values during first and second 8-second recording period, respectively; abs = absolute value; amp = peak amplitude; ANT = anterior left atrial free wall; dnsl = downslope; LIPV = left inferior pulmonary vein; LSPV = left superior pulmonary vein; POST = posterior left atrial free wall; RIPV = right inferior pulmonary vein; RSPV = right superior pulmonary vein; upsl = upslope; wid = width.

P <.05;

^**

P <.001;

— = not significant.