Table 2 Open in new tab Temporal changes...

ERP	CL
Precardioversion (ms)	224 ± 20	234 ± 19	241 ± 19
20 min postcardioversion (ms)	232 ± 23^*	242 ± 22^*	249 ± 21^*
24 h postcardioversion (ms)	236 ± 24^*	246 ± 23^*	253 ± 24^*

ERP	CL
Precardioversion (ms)	224 ± 20	234 ± 19	241 ± 19
20 min postcardioversion (ms)	232 ± 23^*	242 ± 22^*	249 ± 21^*
24 h postcardioversion (ms)	236 ± 24^*	246 ± 23^*	253 ± 24^*

Table 2

Temporal changes in right ventricular refractory periods at the three studied cycle lengths

ERP	CL
	400 ms	500 ms	600 ms^a
Precardioversion (ms)	224 ± 20	234 ± 19	241 ± 19
20 min postcardioversion (ms)	232 ± 23^*	242 ± 22^*	249 ± 21^*
24 h postcardioversion (ms)	236 ± 24^*	246 ± 23^*	253 ± 24^*

ERP	CL
	400 ms	500 ms	600 ms^a
Precardioversion (ms)	224 ± 20	234 ± 19	241 ± 19
20 min postcardioversion (ms)	232 ± 23^*	242 ± 22^*	249 ± 21^*
24 h postcardioversion (ms)	236 ± 24^*	246 ± 23^*	253 ± 24^*

ERP = effective refractory period, CL = cycle length

^*P < 0.01 compared to precardioversion values.

^aWe did not measure ERP at 600 ms in seven patients, because of competition between ventricular cycle length during AF and pacing cycle length of 600 ms.

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