You ask a great question! A Pediatric (resgistered) Nurse can expect to make that of any other registered nurse starting out. That is, around 50,000 dollars yearly, given various circumstances. The yearly increase is a fairly steady rise upon your yearly evaluation, etc. There are deviations from that amount given the clinical setting your work in, and of course the facility as well. When one figures in possible sign-on bonuses, extra pay for additional certifications, shift differential, etc -- that amount can increase dramatically. The pay rate can also depend on sub-specialties, that is, peds critical nurses tend to make a little more than "general peds" nurses. Nursing is a demanding field and many health employers offer any number of financial incentives as well. For instance there is almost always overtime available (big bucks!) In addition, some states Nurses are involved in "unions" and have excellent pay and benefit contracts negotiated on their behalf. Overall, there are many circumstances involved in determining pay. A nurse can expect to be pretty financially stable :-)
In terms of health care professions, income stays fairly consistent and competitive across the board. Either way, nursing is a great career to pursue for reasons other than money. There is always work available there will always be sick people), not to mention it can be very rewarding.
I hope this helps! Best wishes to you and your endeavors :-)