[Application of alpha-hANP for the management following open-heart surgery: report of two cases].

Alpha-human atrial natriuretic peptide (alpha-hANP) has a vasodilating and diuretic action. Intravenous continuous administration of alpha hANP (0.05 microgram/kg/min) was attempted for two patients with low urine output despite good hemodynamics following open-heart surgery. Following the administration of alpha-hANP, urine volume increased markedly, and central venous and pulmonary capillary wedge pressures immediately decreased. Intravenous continuous administration of alpha-hANP is useful for the management of patients associated with the volume overload following open-heart surgery.