Evidence map›Paper›PMID 31684784›Full record

SynthesisInterventional neuroradiology : journal of peritherapeutic neuroradiology, surgical procedures and related neurosciences2020

Mechanical thrombectomy with second-generation devices for acute cerebral middle artery M2 segment occlusion: A meta-analysis.

Guangshuo Li, Rui Huang, Weishuai Li, Xiaotian Zhang, Guorong Bi

Open access · greenAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in Interventional neuroradiology : journal of peritherapeutic neuroradiology, surgical procedures and related neurosciences, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 2 pooled it
2.1field-weighted citation impact, top 13% 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

13 citing papers in PubMed, 2 syntheses or guidelines pooled it, 17 citations in OpenAlex.

  1. Endovascular treatment versus intravenous thrombolysis alone in isolated M2 occlusion: a meta-analysis.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2021
    Pooled it
  2. Pooled it
  3. Article
  4. M1, M2: Time to Bid Adieu!Stroke (Hoboken, N.J.) · 2023
    Review
  5. Observational
  6. Comparing data from thrombectomy in m2 occlusion and proximal middle cerebral artery.Interventional neuroradiology : journal of peritherapeutic neuroradiology, surgical procedures and related neurosciences · 2023
    Article
  7. Intraarterial urokinase for thrombus migration after mechanical thrombectomy for large vessel ischemic stroke.Interventional neuroradiology : journal of peritherapeutic neuroradiology, surgical procedures and related neurosciences · 2023
    Article
  8. Article
  9. Review
  10. Article
  11. Article
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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

5 authors.

Guangshuo LiDepartment of Neurology, Shengjing Hospital, Shenyang, China.
Rui HuangDepartment of Neurology, Shengjing Hospital, Shenyang, China.
Weishuai LiDepartment of Neurology, Shengjing Hospital, Shenyang, China.
Xiaotian ZhangDepartment of Neurology, Shengjing Hospital, Shenyang, China.
Guorong BiDepartment of Neurology, Shengjing Hospital, Shenyang, China.ORCID https://orcid.org/0000-0001-5365-6458

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe benefit of mechanical thrombectomy for an acute ischemic stroke involving M2 segment occlusion is not clear, especially when performed with second-generation thrombectomy devices.

methodWe reviewed the literature to investigate clinical outcomes and the rates of recanalization, symptomatic intracerebral hematoma, and mortality in mechanical thrombectomy performed using second-generation thrombectomy devices. We compared the outcomes between patients treated for M2 and M1 occlusions.

resultsSeven studies involving 805 patients with M2 thrombectomy were included in this meta-analysis. The functional independence rate 90 days after thrombectomy (modified Rankin Scale 0-2) was 59.3% (OR 1.81, 95% CI 1.74-1.88). The recanalization rate (thrombolysis in cerebral infarction 0-2) was 84.16% (OR 2.32, 95% CI 2.08-2.29). The symptomatic intracerebral hematoma rate was 4.9% (OR 1.05, 95% CI 1.03-1.09). The mortality was 7.7% (OR 1.08, 95% CI 1.03-1.13). The outcomes were better in patients with M2 occlusion than in those with M1 occlusion. In a subgroup analysis, we found that among patients with hypertension, mechanical thrombectomy achieved better functional outcomes and recanalization in M2 occlusion than M1 occlusion.

conclusionMechanical thrombectomy performed with second-generation thrombectomy devices for M2 occlusion can provide a good functional outcome as well as satisfying recanalization. Moreover, there was no significant difference in the symptomatic intracerebral hematoma and mortality rates, suggesting this procedure is as safe in M2 occlusion as in M1 occlusion.

Indexed as

AdultAgedAged, 80 and overFemaleHumansInfarction, Middle Cerebral ArteryIschemic StrokeMaleMiddle AgedMiddle Cerebral ArteryStentsThrombectomyTreatment OutcomeDevicestentstrokethrombectomy

Identifiers

PMID31684784
PMCPMC7507224
OpenAlexW2986111401

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.