Preoperative prognostic nutritional index and its impact on surgical-site infection after cesarean section: a retrospective case–control analysis

Although PNI was not an independent predictor of SSI, lower values were strongly associated with infection severity and systemic inflammation. Integrating PNI into preoperative risk assessment-alongside body mass index and operative time-may help identify high-risk women. Larger prospective studies are warranted to confirm these findings and to evaluate the impact of nutritional optimization on postoperative outcomes.