Table 1.

Ranolazine's effects on atrial and ventricular effective refractory periods

Site	Median effective refractory period (milliseconds)	Interquartile range (milliseconds)	P value
High right atrium
Control	167	159–179	0.006
Ranolazine	202	183–231
Right atrial appendage
Control	158	136–164	0.002
Ranolazine	202	187–211
Posterolateral left atrium
Control	140	117–150	0.014
Ranolazine	163	143–193
Right ventricle
Control	253	243–260	0.006
Ranolazine	275	271–281

Reprinted from ref.²⁴ with permission from John Wiley & Sons.