SynthesisNeurosurgical review2025
Subgaleal/subperiosteal versus subdural drainage for chronic subdural hematoma: a systematic review and meta-analysis.
Synthesis in Neurosurgical review, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers, 1 of them a synthesis that pooled 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.
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.
Who cites it
3 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Optimal drain position after evacuation of chronic subdural hematomas: a systematic review and network meta-analysis.Frontiers in neurologyPooled it
- Syndrome of the trephined following burr hole surgery, decompressive craniectomy/cranioplasty, or craniotomy: contemporary vision from a military neurosurgery department.Neurosurgical review · 2026Article
- Minimally invasive evacuation of chronic subdural hematoma: Repurposing a spinal rigid endoscope.Brain & spine · 2026Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
7 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Chronic subdural hematomas (cSDH) are increasingly prevalent, particularly among the elderly, and often require surgical intervention as the standard treatment. The placement of drains following surgical evacuation of cSDH is widely recognized as an effective strategy to reduce recurrence rates and improve clinical outcomes. However, the optimal location for drain placement remains a topic of debate. This study aims to comparatively evaluate the efficacy and safety of subgaleal/subperiosteal drainage (SGPD) and subdural drainage (SDD) techniques in patients with cSDH. This study followed PRISMA guidelines and the Cochrane Handbook. Systematic searches were conducted in PubMed, Embase, Scopus, and Web of Science. Comparative studies of SGPD and SDD in patients undergoing surgical treatment for cSDH were included. The primary outcome was the recurrence rate. Secondary outcomes included favorable clinical outcomes (mRS 0-3), mortality, and complications such as infections, intracerebral hemorrhages, pneumocephalus, and seizures. The risk of bias was assessed using the Cochrane RoB 2 and ROBINS-I tools, and statistical analyses employed fixed or random-effects models based on heterogeneity, utilizing RStudio software. A total of 21 studies involving 6,430 patients were included. SGPD was associated with a significant reduction in recurrence rates compared to SDD (RR = 0.87; 95% CI [0.76; 0.99]; p = 0.0317; I
Indexed as
Identifiers
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Registered trials
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.