An expansion and renovation of East Georgia Regional Medical Center’s emergency department, completed in December, added 10 treatment rooms plus a sub-waiting area designed for emergency patients with less urgent needs. The emergency department project concluded a series of renovations representing a multimillion investment in the Statesboro hospital by its parent company, Community Health Systems, or CHS. Now the emergency department, often informally called an “E.R.,” has a total of 29 treatment rooms, up from 19 previously. EGRMC remains a 149-bed hospital in terms of inpatient rooms.