"Deadly Deliveries," the result of a four-year investigation, references federal data showing that more than 50,000 women are "severely injured" and roughly 700 die during childbirth each year. Perhaps even more staggering is that "half of these deaths could be prevented and half the injuries reduced or eliminated with better care," the investigation found.

The findings, based on interviews with women and a trove of internal hospital records, "reveal a stunning lack of attention to safety recommendations and widespread failure to protect new mothers."

Such failures often stem from inadequate or delayed responses to hemorrhages and dangerously high blood pressure.