Evidence map›Paper›PMID 25089621›Full record

ArticlePloS one2014

Risk factors in chronic subdural hematoma: comparison of irrigation with artificial cerebrospinal fluid and normal saline in a cohort analysis.

Akihiko Adachi, Yoshinori Higuchi, Atsushi Fujikawa, Toshio Machida, Shigeo Sueyoshi, Kenichi Harigaya, Junichi Ono, Naokatsu Saeki

Open access · goldAbstract readComparative Study
In one paragraph

Article in PloS one, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 3 pooled it
1.7field-weighted citation impact, top 17% 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

17 citing papers in PubMed, 3 syntheses or guidelines pooled it, 35 citations in OpenAlex.

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  4. Risk Factors of Chronic Subdural Hematoma Recurrence: A Systematic Review.Medical journal of the Islamic Republic of Iran · 2025
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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

8 authors at 2 institutions in 1 country.

Akihiko AdachiDepartment of Neurosurgery, Chiba Cardiovascular Center, Tsurumai, Ichihara, Japan; Department of Neurological Surgery, Chiba University Graduate School of Medicine, Inohana, Chiba, Japan.
Yoshinori HiguchiDepartment of Neurosurgery, Chiba Cardiovascular Center, Tsurumai, Ichihara, Japan; Department of Neurological Surgery, Chiba University Graduate School of Medicine, Inohana, Chiba, Japan.
Atsushi FujikawaDepartment of Neurosurgery, Chiba Cardiovascular Center, Tsurumai, Ichihara, Japan.
Toshio MachidaDepartment of Neurosurgery, Chiba Cardiovascular Center, Tsurumai, Ichihara, Japan.
Shigeo SueyoshiDepartment of Clinical Laboratory, Chiba Cardiovascular Center, Tsurumai, Ichihara, Japan; Department of Molecular Diagnosis, Chiba University Graduate School of Medicine, Inohana, Chiba, Japan.
Kenichi HarigayaDepartment of Molecular and Tumor Pathology, Chiba University Graduate School of Medicine, Inohana, Chiba, Japan.
Junichi OnoDepartment of Neurosurgery, Chiba Cardiovascular Center, Tsurumai, Ichihara, Japan.
Naokatsu SaekiDepartment of Neurological Surgery, Chiba University Graduate School of Medicine, Inohana, Chiba, Japan.
Chiba Cerebral and Cardiovascular Center · JPChiba University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundChronic subdural hematoma (CSDH) is known to have a substantial recurrence rate. Artificial cerebrospinal fluid (ACF) is an effective irrigation solution in general open craniotomy and endoneurosurgery, but no evidence of its use in burr-hole surgery exists.

objectiveTo identify the potential of ACF irrigation to prevent CSDH recurrence. More specifically, to investigate the perioperative and intraoperative prognostic factors, and to identify controllable ones.

methodsTo examine various prognostic factors, 120 consecutive patients with unilateral CSDH treated with burr-hole drainage between September 2007 and March 2013 were analyzed. Intraoperative irrigation was performed with one of two irrigation solutions: normal saline (NS; n = 60) or ACF (n = 60). All patients were followed-up for at least 6 months postoperatively. We also examined the morphological alternations of the hematoma outer membranes after incubation with different solutions.

resultsEleven patients (9.2%) had recurrence. Nine patients (15%) required additional surgery in the NS group, whereas only 2 patients (3.3%) in the ACF group required additional surgery. Among preoperative and intraoperative data, age (<80 years old, P = .044), thrombocyte (>22.0, P = .037), laterality (right, P = .03), and irrigation solution (ACF, P = .027) were related to smaller recurrence rates by log-rank tests. Only the type of irrigation solution used significantly correlated with recurrence in favor of ACF in both Cox proportional hazards (relative hazard: 0.20, 95% confidence interval (CI): 0.04-0.99; P = .049) and logistic regression models (odds ratio, 0.17, 95% CI: 0.03-0.92; P = .04) using these factors. Histological examinations of the hematoma membranes showed that the membranes incubated with NS were loose and infiltrated by inflammatory cells compared with those incubated with ACF.

conclusionIrrigation with ACF decreased the rate of CSDH recurrence.

Indexed as

Therapeutic IrrigationAgedAged, 80 and overCerebrospinal FluidChronic DiseaseCohort StudiesFemaleHematoma, Subdural, ChronicHumansMaleMembranesMultivariate AnalysisNeurosurgeryRecurrenceRisk FactorsSodium ChlorideSodium ChlorideSolutions

Identifiers

PMID25089621
PMCPMC4121178
OpenAlexW1984902066

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.