Anne36, LPN 1,360 Posts Jul 29, 2012 You need to look for the FHR to go up 15 beats ( beyond the baseline) for 15 seconds twice within 20min. If not, they usually stay on the monitor for another 20minutes. That is a reactive stress test which is good. If there are no accels or only 1 15 second accel I belive that is non reactive.