Evidence map›Paper›PMID 25962814›Full record

Observational studyEuropean spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society2016

Markers of inflammation and fibrinolysis in relation to outcome after surgery for lumbar disc herniation. A prospective study on 177 patients.

P Elkan, M Sten-Linder, R Hedlund, U Willers, S Ponzer, P Gerdhem

Abstract readObservational Study
PubMed Publisher
In one paragraph

Observational study in European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing 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.

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.

  1. Trial
  2. A randomised controlled trial of transforaminal endoscopic discectomy vs microdiscectomy.European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society · 2017
    Trial
  3. Review
  4. Review
  5. Article
  6. Article
  7. Article
  8. Minor effect of loss to follow-up on outcome interpretation in the Swedish spine register.European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society · 2020
    Article
  9. Article
  10. Review
  11. Response rate does not affect patient-reported outcome after lumbar discectomy.European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society · 2018
    Article
  12. Article
  13. Predictors of an unfavorable outcome 1.5 and 12 years after a first, uncomplicated lumbar disc surgery.European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society · 2016
    Article
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

6 authors.

P ElkanDepartment of Orthopedics, Södersjukhuset, SE-118 83, Stockholm, Sweden. peter.elkan@sodersjukhuset.se.ORCID http://orcid.org/0000-0001-8299-4800
M Sten-LinderDepartment of Molecular Medicine and Surgery, Karolinska Institutet, Clinical Chemistry, Karolinska University Hospital, SE-171 76, Stockholm, Sweden.
R HedlundDepartment of Orthopedics, Sahlgrenska University Hospital, SE-413 45, Göteborg, Sweden.
U WillersDepartment of Orthopedics, Södersjukhuset, SE-118 83, Stockholm, Sweden.
S PonzerDepartment of Orthopedics, Södersjukhuset, SE-118 83, Stockholm, Sweden.
P GerdhemCLINTEC, Karolinska Institutet, SE-141 86, Stockholm, Sweden.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThe role of inflammation and fibrinolysis for the development of back pain and sciatica has been discussed. The aim of this study was to assess the relationship between markers of inflammation and fibrinolysis, to predict the outcome after surgery for lumbar disc herniation.

methods177 patients were recruited. High sensitive C-reactive protein (hsCRP), plasminogen activator inhibitor 1 (PAI-1), fibrinogen, and D-dimer were analyzed preoperatively. Visual analogue scale (VAS) for back and leg pain, Oswestry Disability Index (ODI), and EuroQol 5 Dimensions (EQ-5D) were assessed preoperatively and at 6 weeks, 6-, 12-, and 24- months postoperatively. Dichotomization was made at the median for the laboratory analyses, and between the worst quartile and the other three quartiles for the outcome variables. Logistic regression was used to determine the odds ratios (OR) and 95 % confidence intervals (CI).

resultsThe associations between PAI-1 and outcome seemed to be most prominent at the 6 and 12-month follow-up. When being in the upper half of PAI-1, the OR for being in the worst quartile of VAS back pain 12 months postoperatively was 3.33 (1.56-7.10). The corresponding OR for VAS leg pain was 2.46 (1.18-5.10), for ODI 2.83 (1.35-5.94) and for EQ-5D 2.73 (1.30-5.75). The OR for hsCRP was 2.10 (1.03-4.29) for being in the worst quartile of VAS back pain. Fibrinogen or D-dimer was not associated with any outcome variable.

conclusionsHigh PAI-1, a marker of fibrinolysis, was fairly consistently associated with poor outcome, while hsCRP, fibrinogen, and D-dimer were not.

Indexed as

FibrinolysisAdolescentAdultAgedAged, 80 and overBack PainBiomarkersFemaleFollow-Up StudiesHumansInflammationIntervertebral Disc DisplacementLogistic ModelsLumbar VertebraeMaleMiddle AgedBiomarkersFibrinolysisInflammationLumbar disc herniationSurgical outcome

Identifiers

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.