Abstract
Elevated levels of arginine vasopressin (AVP) are associated with a worse prognosis and the development of hyponatremia in patients with heart failure (HF). This observation led to the development of AVP receptor antagonists for the treatment of HF patients. Although AVP receptor antagonists increase serum sodium, their overall benefits in patients with HF have been at best modest, and recent data raise concerns about their safety in patients with acute HF and low serum sodium.
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