Urinary system changes

Glomerular filtration  rate returns to pre pregnancy baseline after 2 weeks. Ureters and renal pelves return to their prepregnant state by 2 to 8 weeks postpartum. However, in postpartum period , the bladder has an increased capacity and a relative insensitivity to intravesical pressure. Thus, over distention, incomplete emptying, and excessive residual urine are frequent in puerperium.