Evidence map›Paper›PMID 20298591›Full record

Trial reportCritical care (London, England)2010

Enoxaparin, effective dosage for intensive care patients: double-blinded, randomised clinical trial.

Sian Robinson, Aleksander Zincuk, Thomas Strøm, Torben Bjerregaard Larsen, Bjarne Rasmussen, Palle Toft

Open access · goldAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Critical care (London, England), 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed, 3 pooled it
4.9field-weighted citation impact, top 5% 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

34 citing papers in PubMed, 3 syntheses or guidelines pooled it, 74 citations in OpenAlex.

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  19. A fixed dose approach to thrombosis chemoprophylaxis may be inadequate in heavier critically ill patients.Critical care and resuscitation : journal of the Australasian Academy of Critical Care Medicine · 2021
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 1 institution in 1 country.

Sian RobinsonDepartment of Anaesthesia and Intensive Care, Odense University Hospital (OUH), Sdr, Odense C, Denmark. sianrob@msn.com
Aleksander Zincuk
Thomas Strøm
Torben Bjerregaard Larsen
Bjarne Rasmussen
Palle Toft
Odense University Hospital · DK

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionIntensive care unit (ICU) patients are predisposed to thromboembolism. Routine prophylactic anticoagulation is widely recommended. Low-molecular-weight heparins, such as enoxaparin, are increasingly used because of predictable pharmacokinetics. This study aims to determine the subcutaneous (SC) dose of enoxaparin that would give the best anti-factor Xa levels in ICU patients.

methodsThe 72 patients admitted to a mixed ICU at Odense University Hospital (OUH) in Denmark were randomised into four groups to receive 40, 50, 60, or 70 mg SC enoxaparin for a period of 24 hours. Anti-factor Xa activity (aFXa) was measured before, and at 4, 12, and 24 hours after administration. An AFXa level between 0.1 to 0.3 IU/ml was considered evidence of effective antithrombotic activity.

resultsMedian peak (4 hours after administration), aFXa levels increased significantly with an increase in enoxaparin dose, from 0.13 IU/ml at 40 mg, to 0.14 IU/ml at 50 mg, 0.27 IU/ml at 60 mg, and 0.29 IU/ml at 70 mg (P = 0.002). At 12 hours after administration, median aFXa levels were still within therapeutic range for those patients who received 60 mg (P = 0.02).

conclusionsOur study confirmed that a standard dose of 40 mg enoxaparin yielded subtherapeutic levels of aFXa in critically ill patients. Higher doses resulted in better peak aFXa levels, with a ceiling effect observed at 60 mg. The present study seems to suggest inadequate dosage as one of the possible mechanisms for the higher failure rate of enoxaparin in ICU patients.

trial registrationISRCTN03037804.

Indexed as

Critical IllnessAgedCritical CareDenmarkDose-Response Relationship, DrugDouble-Blind MethodEnoximoneFactor XaFemaleHumansMaleMiddle AgedProspective StudiesThromboembolismVasodilator AgentsEnoximoneFactor XaVasodilator Agents

Identifiers

PMID20298591
PMCPMC2887151
OpenAlexW2123783370

What OpenQuestion holds

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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.