I think things would have turned it fine even if I hadn't been there. Monitors beep if things go out of acceptable range, but nurses (and NICU parents, eventua

I think things would have turned it fine even if I hadn't been there. Monitors beep if things go out of acceptable range, but nurses (and NICU parents, eventually) learn to not be alarmed by it. Some of the sensors are noisy, and all of the bodies they're connected to are. Usually the beeping resolves itself after a few seconds. In this particular case, the sensor had been temporarily silenced because of the diaper change excitement, but the override would have expired and been noticed by a nurse within a minute or two.