Utility of Tolvaptan in the Perioperative Management of Severe Hyponatremia During Liver Transplantation: A Case Report.

Severe hyponatremia can complicate the pretransplantation management of patients with decompensated cirrhosis while they await liver transplantation. Before the liver transplant, it is critical to correct severe hyponatremia to an appropriate level to reduce the risks of perioperative complications such as central pontine myelinolysis, cerebral edema, and seizures. Vasopressin receptor antagonists, and in particular tolvaptan, offer a therapeutic modality that can correct severe refractory hyponatremia in a timely and predictable manner before liver transplantation. In this case report, we describe a patient with decompensated cirrhosis and severe hyponatremia in whom administration of tolvaptan led to an optimal correction of preoperative severe hyponatremia and allowed for successful liver transplantation with no associated postoperative complications. In light of the increasing pretransplantation disease severity and higher risk of severe hyponatremia, the use of tolvaptan in the pretransplant period may gain increasing importance as a therapeutic intervention for maintaining peritransplant sodium homeostasis.