Abstract
In the outpatient ultrasound suite of a major urban medical center, the mood is somber. A young woman lies tense and anxious. Pregnant for the first time, she has experienced early first-trimester bleeding. The radiologist relates the ultrasound findings: there has been a small hemorrhage, but there is a six-week-size fetus with normal cardiac activity. Translation: the baby is alive! The woman quietly sobs, happy but apprehensive.Across the drive, in the main hospital building, a young boy lies unresponsively comatose in the Pediatric Intensive Care Unit. He was hit by a car while riding his bicycle. He is relying on a ventilator to breath, but his cardiovascular system is supporting itself. After a series...