Study Status: Recruiting
Recruit Status: Recruiting
Study Type: Interventional
Official Title: A Phase 3b, Multicenter, Extension Follow-up Trial to Evaluate the Long-term Safety of Children and Adolescent Subjects With Euvolemic or Hypervolemic Hyponatremia Who Hav
Brief Summary: The objective of this trial is to provide 6 months of safety follow-up for children and adolescents with dilutional (euvolemic or hypervolemic) hyponatremia who have previously participated in a tolvaptan hyponatremia trial, and to assess the efficacy of tolvaptan in increasing serum sodium for those subjects who receive optional continuing tolvaptan treatment of variable duration (up to 6 months).