Incidence, natural history, and risk factors for biliary sludge and stones during pregnancy
Cynthia W. Ko, Shirley A. A. Beresford, Scott J. Schulte, Alvin M. Matsumoto, Sum P. Lee – 19 January 2005 – Gallstones are strongly associated with higher parity in women. This study prospectively assessed the incidence, natural history, and risk factors for biliary sludge and stones during pregnancy and the postpartum in 3,254 women at an army medical center. Women with a prior cholecystectomy or with stones at their first study ultrasound were excluded. Gallbladder ultrasound and subject questionnaires were obtained in each trimester and at 4 to 6 weeks postpartum.