The effort comes in the wake of a death at a private facility.
Amber Redden collapsed and died at Liberty Hall last month after internal bleeding from an ectopic pregnancy. The 27-year-old was serving a 22-month sentence for theft.
The Indianapolis Star reports Sheriff John Layton moved 18 pregnant inmates to cells that are close to the around-the-clock medical staff at the main jail.
Liberty Hall is a 250-bed private facility intended for the incarceration of mothers.
Liberty Hall lawyer Murray Clark says the facility has voluntarily increased its medical staff and hired a consultant to review policies and procedures.
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Information from: The Indianapolis Star, http://www.indystar.com