title: Pylorus preservation has no impact on delayed gastric emptying after pancreatic head resection.
abstract: OBJECTIVE
  Delayed gastric emptying (DGE) has been specifically attributed to pylorus-preserving pancreaticoduodenectomy (PPPD). As PPPD has been shown to be comparable with the classic Kausch-Whipple pancreaticoduodenectomy (KWPD) in terms of oncological radicality, DGE has advanced to be the leading argument for hemigastrectomy in PD.
  
  
  METHODS
  A prospective, nonrandomized comparison of patients undergoing PPPD (n = 113), KWPD (n = 19), and duodenum-preserving, pancreatic head resection (DPPHR, n = 18) for various diseases was performed. First, groups were analyzed with regard to structural similarity; then, they were compared with special emphasis on DGE and other postoperative complications. Finally, further prognostic factors were sought that had an impact on DGE.
  
  
  RESULTS
  The PPPD group was comparable with the KWPD group, but not to the DPPHR population. The in-clinic course after DPPHR compared favorably with PPPD as well as KWPD, and, here, no DGE occurred. The overall morbidity rates of PPPD and KWPD were comparable; 1 patient died in hospital (mortality rate, 0.7%). The gastric tube after PPPD and KWPD could be withdrawn at a median of 2 and 3 days, respectively, a liquid diet was started after 4 and 5 days, respectively, and a full diet was tolerated after 10 days each (n.s.). DGE was distributed evenly among PPPD (12%) and KWPD patients (21%, n.s.), and it was noted almost exclusively when other postoperative complications were present (P < 0.0001). No further prognostic factors influencing DGE could be identified.
  
  
  CONCLUSIONS
  Pylorus preservation does not increase the frequency of DGE. DGE almost exclusively occurs as a consequence of other postoperative complications. Therefore, DGE should not be used as an argument to advocate hemigastrectomy in PPPD.
authors.affiliation: Department of Surgery, University Clinic, Göttingen, Germany. ohorstm@med.uni-goettingen.de
authors.forename: Olaf
authors.initials: O
authors.lastname: Horstmann
authors.forename: Peter M
authors.initials: PM
authors.lastname: Markus
authors.forename: Michael B
authors.initials: MB
authors.lastname: Ghadimi
authors.forename: Heinz
authors.initials: H
authors.lastname: Becker
mesh_terms: D005500:Follow-Up Studies; D005746:Gastric Emptying; D006801:Humans; D010180:Pancreatectomy / Q000009:adverse effects / Q000379:methods*; D010190:Pancreatic Neoplasms / Q000473:pathology / Q000601:surgery; D016577:Pancreaticoduodenectomy / Q000009:adverse effects / Q000379:methods*; D010195:Pancreatitis / Q000473:pathology / Q000601:surgery; D011183:Postoperative Complications / Q000209:etiology / Q000503:physiopathology; D011446:Prospective Studies; D011708:Pylorus / Q000503:physiopathology / Q000601:surgery; D013223:Statistics as Topic; D013997:Time Factors