Kidney Failure in Pregnancy.
Pregnancy often does not worsen renal disorders; it seems to exacerbate noninfectious renal disorders only when uncontrolled hypertension coexists. However, significant renal insufficiency (serum creatinine > 3 mg/dL [> 270 micromol/L] or blood urea nitrogen [BUN] > 30 mg/dL [> 10.5 mmol urea/L]) before pregnancy usually prevents women from maintaining a pregnancy to term.