Evidence map›Paper›PMID 42083018›Full record

Trial reportTrials2026

Postoperative drainage after pancreatoduodenectomy: a randomized controlled trial among patients with intermediate and low risks for pancreatic fistula-DRAIN1.

Sebastian Wallon, Caroline Williamsson, Victor Karlsson, Johanna Wennerblom, Svein-Olav Bratlie, Per Sandström, Bobby Tingstedt, Bergthor Björnsson

Registry-linked trialAbstract readRandomized Controlled TrialMulticenter Study
In one paragraph

Trial report in Trials, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05270564 (Post-operative Drainage After Pancreaticoduodenectomy), which is not on this map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT05270564 naunknown statusnot on this map

Post-operative Drainage After Pancreaticoduodenectomy: A Randomized Controlled Trial of Patients With Intermediate and Low Risk for Pancreatic Fistula

TypeinterventionalSponsorLinkoeping UniversityRan2016 to 2025Enrolled300ConditionsPancreatic CancerArmsDrain, No drain
3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors.

Sebastian Wallon *Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden.
Caroline Williamsson *Department of Clinical Sciences Lund, Surgery, Lund University and Skåne University Hospital, Getingevägen 4, Lund, 221 85, Sweden.
Victor KarlssonDepartment of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden.
Johanna WennerblomDepartment of Surgery, Sahlgrenska University Hospital, Gothenburg, Sweden.
Svein-Olav BratlieDepartment of Surgery, Sahlgrenska University Hospital, Gothenburg, Sweden.
Per SandströmDepartment of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden.
Bobby Tingstedt *Department of Clinical Sciences Lund, Surgery, Lund University and Skåne University Hospital, Getingevägen 4, Lund, 221 85, Sweden.
Bergthor Björnsson *Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden. bergthor.bjornsson@liu.se.

Funding

Region Östergötland RÖ-985799
6 · The paper itself

Abstract

backgroundRoutine use of surgical drains after abdominal operations has largely been abandoned over the past decades. Studies have failed to demonstrate benefits of routine drainage following liver, gallbladder, gastric, and colorectal surgeries. Until recently, intraoperative placement of abdominal drains was the gold standard in pancreatoduodenectomies (PDs) due to concerns about uncontrolled postoperative pancreatic fistula (POPF). A large randomized trial in 2014 reported increased mortality in patients without postoperative drain placement. However, as the study did not stratify participants based on their preoperative risk of developing a POPF, further research is needed. Limited evidence from a non-randomized cohort suggests that omitting drains may be safe in very low-risk settings. However, a larger comparative study, including a broader range of PD cases, is necessary to confirm these findings.

methodsThis is a two-arm, randomized, controlled, non-blinded, multicenter trial comparing intra-abdominal drain placement with no drain placement during planned pancreatoduodenectomies (PDs). Eligible patients who meet the inclusion criteria will be assessed for their individual risk of postoperative pancreatic fistula (POPF) using a risk scoring system. They will then be randomized into either the drain placement or no drain placement group. The groups will be compared using the chi-square test for categorical variables and Fisher's exact test. Logistic regression models will be used to calculate odds ratios for morbidity. Univariable and multivariable models will assess the impact of drain placement on clinical outcomes. DISCUSSION: This trial aims to determine whether omitting routine intraoperative drain placement reduces the risk of complications in patients undergoing pancreatoduodenectomy (PD). It will provide level 1 evidence on the association between routine intra-abdominal drainage and postoperative complications in patients with a low to intermediate risk of developing a postoperative pancreatic fistula (POPF). The findings will contribute to future treatment guidelines by expanding the available knowledge on optimal drainage strategies.

trial registrationClinicalTrials.gov Identifier: NCT05270564. Registered on February 16 2022.

Indexed as

DrainagePancreatic FistulaPancreaticoduodenectomyHumansRisk AssessmentRisk FactorsTime FactorsTreatment OutcomeIntra-abdominal drainPancreatoduodenectomyPostoperative pancreatic fistulaeWhipple procedure

Identifiers

PMID42083018
PMCPMC13147858

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Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.