[Impact of pregnancy on the bladder and urethra. Prospective study].

In connection with a prospective study of 200 expectant mothers, the authors discuss the disorders of the lower urinary tract in the course, and at the end, of pregnancy, which are reversible in the vast majority of cases. They also describe the physiopathological mechanisms of lasting sequelae and the precautions to be taken at the time of childbirth in women identified as high-risk vesico-urethral cases.