Evidence map›Paper›PMID 34387743›Full record

ArticleActa neurochirurgica2021

Improvement in neurological outcome and brain hemodynamics after late cranioplasty.

Arthur Maynart Pereira Oliveira, Robson Luis Oliveira Amorim, Sérgio Brasil, Gabriel Scarabotolo Gattás, Almir Ferreira de Andrade, Fernando Mendes Paschoal Junior, Edson Bor-Seng-Shu, Corrado Iaccarino, Manoel Jacobsen Teixeira, Wellingson Silva Paiva

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Article in Acta neurochirurgica, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 2 pooled it
–field-weighted citation impact
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

11 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Complications of Alloplastic Graft Materials Used in Cranioplasty: Systematic Review and Network Meta-Analysis.Medical science monitor : international medical journal of experimental and clinical research · 2026
    Pooled it
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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.

Arthur Maynart Pereira OliveiraDivision of Neurosurgery, University of São Paulo, 255 Enéas de Carvalho Aguiar, São Paulo, 05403-010, Brazil.
Robson Luis Oliveira AmorimDivision of Neurosurgery, University of São Paulo, 255 Enéas de Carvalho Aguiar, São Paulo, 05403-010, Brazil.
Sérgio BrasilDivision of Neurosurgery, University of São Paulo, 255 Enéas de Carvalho Aguiar, São Paulo, 05403-010, Brazil. sbrasil@alumni.usp.br.ORCID http://orcid.org/0000-0003-2397-9947
Gabriel Scarabotolo GattásDivision of Radiology, University of São Paulo, São Paulo, Brazil.
Almir Ferreira de AndradeDivision of Neurosurgery, University of São Paulo, 255 Enéas de Carvalho Aguiar, São Paulo, 05403-010, Brazil.
Fernando Mendes Paschoal JuniorDivision of Neurosurgery, University of São Paulo, 255 Enéas de Carvalho Aguiar, São Paulo, 05403-010, Brazil.
Edson Bor-Seng-ShuDivision of Neurosurgery, University of São Paulo, 255 Enéas de Carvalho Aguiar, São Paulo, 05403-010, Brazil.
Corrado IaccarinoDepartment of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Modena, Italy.
Manoel Jacobsen TeixeiraDivision of Neurosurgery, University of São Paulo, 255 Enéas de Carvalho Aguiar, São Paulo, 05403-010, Brazil.
Wellingson Silva PaivaDivision of Neurosurgery, University of São Paulo, 255 Enéas de Carvalho Aguiar, São Paulo, 05403-010, Brazil.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundEarly cranioplasty has been encouraged after decompressive craniectomy (DC), aiming to reduce consequences of atmospheric pressure over the opened skull. However, this practice may not be often available in low-middle-income countries (LMICs). We evaluated clinical improvement, hemodynamic changes in each hemisphere, and the hemodynamic balance between hemispheres after late cranioplasty in a LMIC, as the institution's routine resources allowed.

methodsProspective cohort study included patients with bone defects after DC evaluated with perfusion tomography (PCT) and transcranial Doppler (TCD) and performed neurological examinations with prognostic scales (mRS, MMSE, and Barthel Index) before and 6 months after surgery.

resultsA final sample of 26 patients was analyzed. Satisfactory improvement of neurological outcome was observed, as well as significant improvement in the mRS (p = 0.005), MMSE (p < 0.001), and Barthel Index (p = 0.002). Outpatient waiting time for cranioplasty was 15.23 (SD 17.66) months. PCT showed a significant decrease in the mean transit time (MTT) and cerebral blood volume (CBV) only on the operated side. Although most previous studies have shown an increase in cerebral blood flow (CBF), we noticed a slight and nonsignificant decrease, despite a significant increase in the middle cerebral artery flow velocity in both hemispheres on TCD. There was a moderate correlation between the MTT and contralateral muscle strength (r =  - 0.4; p = 0.034), as well as between TCD and neurological outcomes ipsilateral (MMSE; r = 0.54, p = 0.03) and contralateral (MRS; p = 0.031, r =  - 0.48) to the operated side.

conclusionEven 1 year after DC, cranioplasty may improve cerebral perfusion and neurological outcomes and should be encouraged.

Indexed as

Decompressive CraniectomyPlastic Surgery ProceduresBrainCerebrovascular CirculationHemodynamicsHumansProspective StudiesSkullTreatment OutcomeCerebral blood flowCranioplastyDecompressive craniectomyHemodynamicsPerfusion imagingTranscranial Doppler sonography

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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.