Evidence map›Paper›PMID 34808627›Full record

ArticleCerebrovascular diseases extra2021

Long-Term Cognitive Changes after Revascularization Surgery in Adult Patients with Ischemic Moyamoya Disease.

Shun Uchida, Yoshitaka Kubo, Daisuke Oomori, Masahiro Yabuki, Kei Kitakami, Shunrou Fujiwara, Kenji Yoshida, Masakazu Kobayashi, Kazunori Terasaki, Kuniaki Ogasawara

Open access · goldAbstract read
In one paragraph

Article in Cerebrovascular diseases extra, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 1 pooled it
3.6field-weighted citation impact, top 6% 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

14 citing papers in PubMed, 1 synthesis or guideline pooled it, 30 citations in OpenAlex.

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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

10 authors at 1 institution in 1 country.

Shun UchidaDepartment of Neurosurgery, Iwate Medical University School of Medicine, Yahaba, Japan.
Yoshitaka KuboDepartment of Neurosurgery, Iwate Medical University School of Medicine, Yahaba, Japan.
Daisuke OomoriDepartment of Neurosurgery, Iwate Medical University School of Medicine, Yahaba, Japan.
Masahiro YabukiDepartment of Neurosurgery, Iwate Medical University School of Medicine, Yahaba, Japan.
Kei KitakamiDepartment of Neurosurgery, Iwate Medical University School of Medicine, Yahaba, Japan.
Shunrou FujiwaraDepartment of Neurosurgery, Iwate Medical University School of Medicine, Yahaba, Japan.
Kenji YoshidaDepartment of Neurosurgery, Iwate Medical University School of Medicine, Yahaba, Japan.
Masakazu KobayashiDepartment of Neurosurgery, Iwate Medical University School of Medicine, Yahaba, Japan.
Kazunori TerasakiInstitute for Biomedical Sciences, Iwate Medical University School of Medicine, Yahaba, Japan.
Kuniaki OgasawaraDepartment of Neurosurgery, Iwate Medical University School of Medicine, Yahaba, Japan.
Iwate Medical University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionRevascularization surgery for adult moyamoya disease (MMD) with ischemic presentation changes cognitive function and prevents further cerebral ischemic events. Most studies however repeated neuropsychological evaluation within 1 year after surgery. Our previous prospective cohort study of adult patients with MMD with misery perfusion who underwent direct revascularization surgery showed cognitive improvement and decline in 31% and 44%, respectively, of the patients 2 months after surgery. The present prospective study aimed to elucidate the 5-year cognitive changes after direct revascularization surgery in adult patients with cerebral misery perfusion due to ischemic MMD by following the same patients.

methodsIn total, 31 patients were prospectively followed up for 5 years after direct revascularization surgery. Five types of neuropsychological tests were performed preoperatively, 2 months after surgery, and at the end of the 5-year follow-up. Cerebral blood flow (CBF) in the symptomatic cerebral hemisphere relative to that in the ipsilateral cerebellar hemisphere (hemispheric relative CBF [RCBF]) was measured using brain perfusion single-photon emission computed tomography preoperatively and at the end of the 5-year follow-up.

resultsBased on results of pre- and postoperative neuropsychological tests, 11, 10, and 10 patients showed cognitive improvement, no change in cognitive function, and cognitive decline, respectively, at the end of the 5-year follow-up. These ratios were not significantly different compared with those 2 months after surgery (cognitive improvement, no change in cognitive function, and cognitive decline in 10, 8, and 13 patients, respectively). Although hemispheric RCBF was significantly greater at the end of the 5-year follow-up than before surgery in patients with cognitive improvement (80.7 ± 6.1% vs. 92.9 ± 5.5%; p = 0.0033) and in those showing no change in cognitive function (85.6 ± 3.5 vs. 91.5 ± 5.2%; p = 0.0093), this value was significantly lower at the end of the 5-year follow-up than before surgery in patients with cognitive decline (83.8 ± 3.7 vs. 81.0 ± 5.8%; p = 0.0367).

conclusionOne-third of adult patients with cerebral misery perfusion due to ischemic MMD who underwent direct revascularization surgery exhibited cognitive improvement, and one-third exhibited decline at the end of the 5-year follow-up. The former and latter patients had increased and decreased CBF, respectively, in the affected cerebral hemisphere at the end of the 5-year follow-up compared with preoperative brain perfusion.

Indexed as

Moyamoya DiseaseAdultCerebrovascular CirculationCognitionCohort StudiesHumansProspective StudiesAdultCognitionIschemiaMoyamoya diseaseRevascularization

Identifiers

PMID34808627
PMCPMC8787508
OpenAlexW3216868880

What OpenQuestion holds

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LicenceCC BY-NC
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Registered trials

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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.