Pregnancy with urolithiasis

Urinary calculi, regardless of whether the stones are located in the kidneys, pelvis, ureters, or bladder, its impact on pregnancy depends on whether there is a urinary tract infection and whether there is renal parenchymal damage. Urinary system stones are rare in pregnancy, and the incidence is 0.03% to 0.35%. It is generally believed that the incidence of lithiasis during pregnancy is not higher than that of non-pregnant women. There is secondary hyperparathyroidism during pregnancy, but it does not cause urinary tract stones. As the colloidal protection in urine increases during pregnancy (increased mucin excretion), the crystalline material in the urine can still be maintained in a supersaturated state without sedimentation. Normal pregnant women's blood calcium and blood phosphorus are in the low range of normal values, which proves that there is no promoting effect on the formation of stones during pregnancy. When calculi occurs in pregnancy, as far as the stones themselves are concerned, there is no obvious adverse effect on pregnancy and the fetus. You can continue your pregnancy and wait for further examination and treatment after delivery. If the symptoms are severe, the stones may be complicated by infection, pus and kidneys, causing renal parenchymal damage. At that time, the pregnancy should be terminated or the kidneys should be removed.