Acute endometritis following childbirth. Risk factors for development of this condition include premature or prolonged rupture of membranes, dystocia with multiple vaginal examinations, poor aseptic technique, trauma related to intrauterine manipulation, and careless perineal care. Constitutional factors that predispose the parturient woman to endometritis include anemia, malnutrition, and hemorrhage. Portals of bacterial entry include the site of previous placental attachment, episiotomy, lacerations, and abrasions.