It's Your Breath in Our Lungs “We are on the doorstep of heaven in PICU,” my sister wrote. It was December 11. Her son had been on a ventilator in the Pediatric Intensive Care Unit of Minneapolis Children’s Hospital since a life-saving surgery five days earlier. His limbs were frozen while his body waged silent war against a chest infection and asthmatic attack — one lung collapsed and the other full of fluid. Four years old and battling for breath