Phenylephrine Versus Norepinephrine in Acute Abdomen Surgery: Similar Clinical Outcomes but Different Early Renin Responses — Implications for Perioperative Hemodynamic Care

Phenylephrine Versus Norepinephrine in Acute Abdomen Surgery: Similar Clinical Outcomes but Different Early Renin Responses — Implications for Perioperative Hemodynamic Care

A randomized trial in 156 emergency acute-abdomen patients found phenylephrine and norepinephrine produced similar postoperative RAAS changes and complication rates; norepinephrine produced an early renin rise, while high preoperative renin predicted greater vasopressor needs and higher AKI incidence.