Early Enteral Nutrition Reduces Postoperative Complications in High-Risk Pancreatoduodenectomy Patients

Background

Pancreatoduodenectomy remains one of the most complex abdominal surgeries with high postoperative morbidity rates (30-50%). Nutritional support strategies in the postoperative period are crucial yet controversial, particularly for patients with pre-existing nutritional risk. While enteral nutrition preserves gut barrier function and modulates systemic immunity, concerns remain about tube-related complications and patient tolerance.

Study Design

This multicenter, open-label, superiority RCT (NUTRIWHI) enrolled 144 patients (142 randomized) with Nutritional Risk Screening scores ≥3 across Swiss and French tertiary centers from 2021-2024. Patients were allocated 1:1 to early enteral nutrition (EEN) via nasojejunal tube started immediately postoperatively (with progressive oral intake) or oral nutrition (ON) alone. Parenteral nutrition protocols were standardized in both arms. Primary endpoint was 90-day complication burden measured by Comprehensive Complication Index (CCI).

Key Findings

The EEN group showed significantly lower mean 90-day CCI (25.5 vs 35.8; mean difference 10.3, 95% CI 1.8-18.8; P=.02), representing a clinically meaningful 29% reduction in complication burden. While overall morbidity rates showed no statistical difference (45/59 vs 51/59; RR 1.13, 95% CI 0.9-1.9), EEN demonstrated numerical advantages across multiple secondary endpoints including infectious complications (28.8% vs 35.6%) and pulmonary complications (13.6% vs 20.3%). Tube-related adverse events occurred in 23.7% of EEN patients requiring replacement.

Clinical Implications

These findings support EEN as the preferred nutritional strategy for high-risk patients undergoing pancreatoduodenectomy. The 10.3-point CCI reduction suggests substantial clinical benefit, as a 10-point difference is considered the minimal clinically important difference for this scale. Institutions should prioritize nasojejunal tube placement protocols and staff training to minimize tube displacement issues.

Conclusion

The NUTRIWHI trial provides Level 1 evidence that early enteral nutrition reduces postoperative complication burden in nutritionally vulnerable pancreatoduodenectomy patients. These results should inform enhanced recovery protocols and nutritional support guidelines for pancreatic surgery.