Meyer et al. assessed the efficacy of arginine vasopressin as a rescue therapy in catecholamine refractory septic and nonseptic shock in extremely low birth weight infants with acute renal injury.[26] Prospective assessment of arginine vasopressin therapy in three extremely low birth weight (ELBW) infants (mean birth weight 600g ± 30 g) with catecholamine refractory septic shock and acute renal injury, was compared with three ELBW infants with nonseptic shock and acute renal injury, at a university hospital. Here, AVP is linked to Shock.