Pathophysiology and Management of Preeclampsia-Associated Severe Hyponatremia

Summary of the approach. All values shown are for serum sodium (in mEq/L). The patient was admitted first at 32 weeks and readmitted at 33 and 34 weeks of gestation. Nephrology was consulted in week 34, and fluid restriction was started. Labor was induced in week 35 due to worsening hyponatremia. Serum sodium level was 135 mEq/L within 48 hours postpartum. Serum sodium in mEq/L; no conversion necessary for expression in mmol/L. Abbreviation: SIADH, syndrome of inappropriate secretion of antidiuretic hormone.