SynthesisNeurosurgical review2022
Postoperative pneumocephalus and recurrence and outcome of chronic subdural hematoma: a systematic review and meta-analysis.
Synthesis in Neurosurgical review, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
What it found
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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.
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Who cites it
5 citing papers in PubMed.
- Three-dimensional computed tomography-guided burr-hole surgery with middle meningeal artery coagulation and severance (B-MACS) for chronic subdural hematoma: a retrospective clinical study.Neurosurgical review · 2026Article
- Article
- Postoperative pneumocephalus as a predictor of chronic subdural hematoma recurrence: a retrospective cohort analysis.European journal of trauma and emergency surgery : official publication of the European Trauma Society · 2025Article
- Comparative clinical outcomes of irrigation techniques in burr-hole craniostomy for chronic subdural hemorrhage: a multicenter cohort study.European journal of trauma and emergency surgery : official publication of the European Trauma Society · 2024Article
- Standardized single-burr-hole aspiration-irrigation with drainage is associated with lower early recurrence in chronic subdural hematoma.Frontiers in neurologyArticle
Corrections and comments
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Authors and funding
7 authors.
Funding
Abstract
We conducted a meta-analysis to analyze the effects of pneumocephalus after chronic subdural hematoma (CSDH) surgery on hematoma recurrence, mortality, and functional outcomes. In this meta-analysis, following PRISMA guidelines, PubMed, Embase, Cochrane Library, and Web of Science online databases were queried using the keywords "pneumocephalus," "pneumoencephalos," "intracranial pneumatocele," "pneumo encephalon," "subdural air," and "chronic subdural hematoma." The results were limited to English-language articles. Through the online database, we identified a total of 276 articles and finally included 14 articles for meta-analysis. The results showed that the recurrence rate in the pneumocephalus group was higher than that in the control group, with a pooled OR of 3.35 (CI: 2.51-4.46, P < 0.001). There was no difference in recurrence rate between the no/few and moderate pneumocephalus groups (OR: 1.27, CI: 0.68-2.37, P = 0.46), but the recurrence rate of the large pneumocephalus group was significantly higher than that of the moderate group, with a pooled OR of 3.29 (CI: 1.71-6.32, P < 0.001). This study failed to show higher mortality and worse outcomes in the pneumocephalus group than in the control. Pneumocephalus after surgical evacuation of CSDH was associated with the recurrence rate of hematoma. Pneumocephalus affecting recurrence was correlated with gas volume, and moderate pneumocephalus may have less impact, while patients with large pneumocephalus are more likely to recur than those with moderate pneumocephalus. More prospective cohort studies are needed for further investigation and verification. This meta-analysis was registered (PROSPERO CRD42022321800).
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