<prompt> What differentiaties secondary apnea from primary apnea in the newbornSimple stimulation reverses it.Accompanied by loss of neuromuscular tone.Will spontaneously resume respiratory efforts.Clinically primary and secondary apnea are indistinguishable.  <response>: In primary apnea, simple stimulation reverses it and will spontaneously revert. Both primary and secondary apneas have loss in muscle tone, fall in heart rate. 