TABLE 2.

Electrophysiologic Changes

	LLTS (n = 20)		Control (n = 20)		p Value*
	Baseline	1 hour	Baseline	1 hour
AF duration, min	16.7 ± 6.2	10.4 ± 5.2	17.1 ± 5.7	18.5 ± 5.6	0.002
AF cycle length, ms	189.1 ± 37.6	217.9 ± 33.0	200.6 ± 42.3	191.9 ± 49.1	0.0002
Number of attempts (median, interquartile range, min and max)	2 (1 to 4) (1 to 10)	4 (2 to 6) (1 to 15)	2 (1 to 4) (1 to 10)	1 (1 to 2) (1 to 6)	0.005
RA AERP, ms	222.3 ± 31.1	232.3 ± 31.1	236.4 ± 46.5	227.8 ± 43.0	0.04
CS AERP, ms	222.7 ± 41.0	230.8 ± 41.0	253.3 ± 53.7	240.7 ± 50.6	0.04

Values are mean ± SD unless otherwise indicated.

^*Comparison of the change in each parameter before and after LLTS or sham between the 2 groups.

AERP = atrial effective refractory period; CS = coronary sinus; RA = right atrial; other abbreviations as in Table 1.