Evidence map›Paper›PMID 30430381›Full record

ArticleNeurocritical care2019

The Role of Glycerol-Containing Drugs in Cerebral Microdialysis: A Retrospective Study on the Effects of Intravenously Administered Glycerol.

Maximilian Peter Forssten, Eric Peter Thelin, David W Nelson, Bo-Michael Bellander

Open access · hybridAbstract read
In one paragraph

Article in Neurocritical care, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
0.3field-weighted citation impact, top 35% 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

2 citing papers in PubMed, 5 citations in OpenAlex.

  1. Review
  2. Review
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

4 authors at 2 institutions in 2 countries.

Maximilian Peter ForsstenDepartment of Clinical Neuroscience, Section for Neurosurgery, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden. maximilian.forssten@stud.ki.se.
Eric Peter ThelinDepartment of Clinical Neuroscience, Section for Neurosurgery, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden.
David W NelsonDepartment of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden.
Bo-Michael BellanderDepartment of Clinical Neuroscience, Section for Neurosurgery, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden.
Karolinska Institutet · SEKarolinska University Hospital · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundCerebral microdialysis (CMD) is a valuable tool for monitoring compounds in the cerebral extracellular fluid (ECF). Glycerol is one such compound which is regarded as a marker of cell membrane decomposition. Notably, in some acutely brain-injured patients, CMD-glycerol levels rise without any other apparent indication of cerebral deterioration. The aim of this study was to investigate whether this could be due to an association between CMD-glycerol levels and the administration of glycerol-containing drugs.

methodsMicrodialysis data were retrospectively retrieved from the hospital's intensive care unit patient data management system (PDMS). All patients who were monitored with CMD for ≥ 96 h were included. Administered drug doses were retrieved from the PDMS and converted to exact doses of glycerol. Cross-correlation analyses were performed between the free, metabolized as well as total administered dose of glycerol and the detrended and differenced CMD-glycerol concentration. These analyses were repeated for two sets of subgroups based upon the individual catheter's graphical trend and its location in relation to the lesion.

resultsThere was no significant correlation between the differenced CMD-glycerol levels and drug-administered glycerol. Furthermore, there was no significant correlation between CMD-glycerol and catheter location or graphical trend. However, if the CMD-glycerol levels were detrended, significant but clinically non-relevant correlations were identified (maximum correlation coefficient of 0.1 (0.04-0.15, 95% CI) at a lag of 7 h using the total administered dose of glycerol).

conclusionsGlycerol-containing drugs routinely administered intravenously in the clinical setting appear to have a minimal and clinically insignificant effect on levels of glycerol in the cerebral ECF.

Indexed as

Critical CareMicrodialysisAdministration, IntravenousAdultBrain Injuries, TraumaticCerebrumExtracellular FluidFemaleGlycerolHumansIntensive Care UnitsMaleMedical Records Systems, ComputerizedMeningitis, BacterialMiddle AgedNeurophysiological MonitoringGlycerolGlycerolIntensive careMicrodialysisNeurophysiological monitoring

Identifiers

PMID30430381
PMCPMC6513829
OpenAlexW2900911201

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Registered trials

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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.