I'm not at boston or chop but am at another large childrens hospital so if you're looking for comparable stats I can give mine. My hospital has a PICU/CICU/NICU. There is a peds transport team and a nicu transport team. For cardiac nicu will get the babies, peds will get the older kiddos. Size of units: NICU - 56 beds, PICU - 40ish beds (can't remember exact), CICU - 26 beds. NICU/PICU always have 2 charge nurses WITHOUT assignments, CICU typically has one charge RN and a "resource" RN if staffing allows, both without assignments. All units have patient care techs and patient service techs. "PCT"s can assist RNs with cares such as trach care, baths, bed changes, turns, dressing changes and can also string lines (fluids, non narcotic meds, tpn), they can also feed kiddos who have no aspiration risks and entertain kids that need it. "PSAs" help with stocking carts and supplies, picking up blood, meds, assist with transporting kiddos etc but can not do any patient care.
Staffing in all units is typically 2:1 or 1:1, NICU occasionally gets 3:1. Our staffing abilities fluctuate with with acuity/census of course but picu/cicu never have 3:1 and are usually 1:1 if able.
We did have a situation a few months back during a very high acuity/census time when a charge rn in the cicu was forced to take a patient. Well a patient on the opposite side of the unit coded and she couldn't be there. The attending was LIVID because our charge RN's typically co-run the codes with the docs keeping order and pretty much anticipating what the docs are going to do and making sure everything is ready so when the charge nurse was unable to be at the code the attending made a huge stink about it. That hasn't happened since.