Patients in the EGDT group received a larger mean ( SD ) volume of intravenous fluids in the first @ hours after randomization than did those in the usual-care group ( @ ml vs. @ ml ) and were more likely to receive vasopressor infusions ( @ % vs. @ % ) , red-cell transfusions ( @ % vs. @ % ) , and dobutamine ( @ % vs. @ % ) ( P < @ for all comparisons ) .