Staffing, capacity, and ambulance diversion in emergency departments: United States, 2003-04.

Abstract

There was an annual average of 4,500 EDs operating in the United States during 2003 and 2004. Over one-half of EDs saw less than 20,000 patients annually, but 1 out of 10 had an annual visit volume of more than 50,000 patients. Although 16.1 percent of hospitals expanded their ED physical space within the last 2 years, approximately one-third of others planned to do so within the next 2 years. Most EDs used outside contracts to provide physicians (64.7 percent). One-half of EDs in metropolitan statistical areas (MSAs) had more than 5 percent of their nursing positions vacant. Of all on-call specialists, the services of plastic and hand surgeons were most frequently reported as somewhat or very difficult to obtain (49.4 percent). Approximately one-third of U.S. hospitals reported going on ambulance diversion sometime in the previous year. About 12 percent of hospitals in MSAs reported having spent between 5 and 19 percent of their operating time in diversion status. Between 40 and 50 percent of U.S. hospitals experienced crowded conditions in the ED with almost two-thirds of metropolitan EDs experiencing crowding.