Evidence map›Paper›PMID 21443837›Full record

Trial reportCanadian journal of surgery. Journal canadien de chirurgie2011

Randomized controlled trial to investigate the impact of anticoagulation on the incidence of splenic or portal vein thrombosis after laparoscopic splenectomy.

Haili Wang, Daniel Kopac, Ronald Brisebois, Clifford Sample, A M James Shapiro

Open access · greenAbstract readClinical Trial, Phase IIRandomized Controlled Trial
In one paragraph

Trial report in Canadian journal of surgery. Journal canadien de chirurgie, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 2 pooled it
2.2field-weighted citation impact, top 13% of its field
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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

13 citing papers in PubMed, 2 syntheses or guidelines pooled it, 31 citations in OpenAlex.

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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

5 authors at 1 institution in 1 country.

Haili WangThe Department of Surgery at the University of Alberta Hospital, Edmonton, Alta.
Daniel Kopac
Ronald Brisebois
Clifford Sample
A M James Shapiro
Alberta Hospital Edmonton · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSplenic and portal vein thrombosis (SPVT) is a potentially life-threatening complication of splenectomy. There is a paucity of studies examining the role of prophylactic pre- and postoperative anticoagulation in the prevention of this complication. We designed a prospective randomized controlled trial (RCT) to more rigorously address the impact of prophylactic anticoagulation on the incidence of asymptomatic or symptomatic SPVT, detected on Doppler ultrasound, after laparoscopic splenectomy.

methodsThis 2-centre, phase II, prospective, open-label, parallel-assignment RCT compared no postoperative anticoagulation to a regimen of 40 mg of enoxaparin subcutaneously once daily for 21 days. All patients underwent Doppler ultrasonography of the splenoportal system preoperatively and again 14-28 days after surgery to screen for nonocclusive or occlusive thrombosis.

resultsFrom November 2006 to November 2008, 35 patients were enrolled in the RCT. Four patients withdrew, 1 required conversion to an open procedure and 1 died at 3 months (the cause of death was not related to the study). Of the 29 patients remaining, 15 were randomly assigned to the anticoagulation group and 14 to the nonanticoagulation group. One (3.4%) patient in the treatment group experienced portal thrombosis. Rates of postoperative bleeding were similar in both groups.

conclusionThis RCT of anticoagulation found a low overall risk of SPVT after laparoscopic splenectomy; however, this is an underpowered study, and further multicentred clinical trials are needed.

Indexed as

Portal SystemAdolescentAdultAgedAnticoagulantsEnoxaparinFemaleHumansIncidenceLaparoscopyMaleMiddle AgedProspective StudiesSplenectomyUltrasonography, DopplerVenous ThrombosisAnticoagulantsEnoxaparin

Identifiers

PMID21443837
PMCPMC3191895
OpenAlexW1983217900

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.