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Updated: Apr 29, 2026
Modified Single-Loop Reconstruction for Pancreaticoduodenectomy
Published on: September 28, 2019
Using a modification of the Clavien-Dindo system accounting for readmissions and multiple interventions: defining
Marshall S Baker1, Karen L Sherman, Susan J Stocker
1Department of Surgery, NorthShore University Health System, Evanston, Illinois.
Insights
A modified Clavien-Dindo system better grades complications after pancreaticoduodenectomy (PD). This enhanced grading identifies severe adverse postoperative outcomes (SAPO) and links them to age, pylorus preservation, and blood loss.
Area of Science:
- Surgical outcomes research
- Patient safety and quality improvement
Background:
- The Clavien-Dindo (CD) system is standard for grading surgical complications.
- The CD system does not adequately account for readmissions or multiple interventions for a single complication.
Purpose of the Study:
- To modify the Clavien-Dindo system to better reflect complication severity after pancreaticoduodenectomy (PD).
- To identify factors associated with severe adverse postoperative outcomes (SAPO) following PD using the modified system.
Main Methods:
- A retrospective review of pancreaticoduodenectomy (PD) cases from 1999-2009.
- A modified Clavien-Dindo grading system was applied, classifying complications requiring multiple interventions, prolonged stay, or readmission as severe adverse postoperative outcomes (SAPO).
Main Results:
- Ninety-two outcomes (19%) were upgraded from Clavien-Dindo grades II or IIIa to SAPO using the modified system.
- Overall, 139 patients (28.4%) experienced a SAPO.
- Predictors of SAPO included age >75 years, pylorus preservation, and operative blood loss >1,500 ml.
Conclusions:
- The standard Clavien-Dindo system may under-grade the severity of certain complications after PD.
- A modified, procedure-specific Clavien-Dindo system accounting for readmissions and interventions provides a more accurate assessment of PD complication severity.
- Advanced age, pylorus preservation, and significant intraoperative blood loss are associated with SAPO following PD.
Background:
The Clavien-Dindo system (CD) does not change the grade assigned a complication when multiple readmissions or interventions are required to manage a complication. We apply a modification of CD accounting for readmissions and interventions to pancreaticoduodenectomy (PD).
Methods:
PDs done between 1999 and 2009 were reviewed. CD grade IIIa complications requiring more than one intervention and II and IIIa complications requiring significantly prolonged lengths of stay including all 90-day readmissions were classified severe-adverse-postoperative-outcomes (SAPO). CD IIIb, IV, and V complications were also classified SAPOs. All other complications were considered minor-adverse-postoperative-outcomes (MAPO).
Results:
Four-hundred forty three of 490 PD patients (90.4%) had either no complication or a complication of low to moderate CD grade (I, II, IIIa). When reclassified by the new metric, 92 patient-outcomes (19%) were upgraded from CD II or IIIa to SAPO. One-hundred thirty nine patients (28.4%) had a SAPO. Multivariable regression identified age >75 years, pylorus preservation and operative blood loss >1,500 ml as predictors of SAPO. Age was not associated with poor outcome using the unmodified CD system.
Conclusions:
Established systems may under-grade the severity of some complications following PD. We define a procedure-specific modification of CD accounting for readmissions and multiple interventions. Using this modification, advanced age, pylorus preservation, and significant blood loss are associated with poor outcome.
