Evidence map›Paper›PMID 30792248›Full record

ArticleAJNR. American journal of neuroradiology2019

Aqueductal CSF Stroke Volume Is Increased in Patients with Idiopathic Normal Pressure Hydrocephalus and Decreases after Shunt Surgery.

J Shanks, K Markenroth Bloch, K Laurell, K G Cesarini, M Fahlström, E-M Larsson, J Virhammar

Registry-linked trialOpen access · hybridAbstract read
In one paragraph

Article in AJNR. American journal of neuroradiology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT06857136 (The Role of the Glymphatic System Avaluated Thourgh mr Imaging in the Diagnosis and Management of NPH), which is not on this map. Cited by 22 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 2 pooled it
2.0field-weighted citation impact, top 15% 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.

NCT06857136 completednot on this mapstarted 2021, after this paper: background citation

The Role of the Glymphatic System Avaluated Thourgh mr Imaging in the Diagnosis and Management of NPH

TypeobservationalSponsorFondazione I.R.C.C.S. Istituto Neurologico Carlo BestaRan2021 to 2024Enrolled29ConditionsHydrocephalus, Normal Pressure Hydrocephalus
3 · Its place in the literature

Who cites it

22 citing papers in PubMed, 2 syntheses or guidelines pooled it, 40 citations in OpenAlex.

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  17. Achieving brain clearance and preventing neurodegenerative diseases-A glymphatic perspective.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2021
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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

7 authors at 4 institutions in 2 countries.

J ShanksFrom the Departments of Surgical Sciences and Radiology (J.S., M.F., E.-M.L.).ORCID 0000-0002-2484-4780
K Markenroth BlochLund University Bioimaging Center (K.M.B.), Lund University, Lund, Sweden.ORCID 0000-0002-3310-6667
K LaurellDepartment of Pharmacology and Clinical Neuroscience (K.L.), Umeå University, Umeå, Sweden.ORCID 0000-0002-7504-8354
K G CesariniNeuroscience and Neurosurgery (K.G.C.).ORCID 0000-0002-2624-8624
M FahlströmFrom the Departments of Surgical Sciences and Radiology (J.S., M.F., E.-M.L.).ORCID 0000-0002-2502-6026
E-M LarssonFrom the Departments of Surgical Sciences and Radiology (J.S., M.F., E.-M.L.).ORCID 0000-0001-6308-1387
J VirhammarNeuroscience and Neurology (J.V.), Uppsala University, Uppsala, Sweden johan.virhammar@neuro.uu.se.ORCID 0000-0001-9901-2949
Lund University · SESociety for Neuroscience · USUmeå University · SEUppsala University · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

background and purposeIncreased CSF stroke volume through the cerebral aqueduct has been proposed as a possible indicator of positive surgical outcome in patients with idiopathic normal pressure hydrocephalus; however, consensus is lacking. In this prospective study, we aimed to compare CSF flow parameters in patients with idiopathic normal pressure hydrocephalus with those in healthy controls and change after shunt surgery and to investigate whether any parameter could predict surgical outcome. MATERIALS AND

methodsTwenty-one patients with idiopathic normal pressure hydrocephalus and 21 age- and sex-matched healthy controls were prospectively included and examined clinically and with MR imaging of the brain. Eighteen patients were treated with shunt implantation and were re-examined clinically and with MR imaging the day before the operation and 3 months postoperatively. All MR imaging scans included a phase-contrast sequence.

resultsThe median aqueductal CSF stroke volume was significantly larger in patients compared with healthy controls (103.5 μL; interquartile range, 69.8-142.8 μL) compared with 62.5 μL (interquartile range, 58.3-73.8 μL;

conclusionsAqueductal CSF stroke volume was increased in patients with idiopathic normal pressure hydrocephalus and decreased after shunt surgery, whereas retrograde aqueductal net flow did not seem to be specific for patients with idiopathic normal pressure hydrocephalus. On the basis of the results, the usefulness of CSF flow parameters to predict outcome after shunt surgery seem to be limited.

Indexed as

AgedCerebral AqueductCerebrospinal Fluid ShuntsFemaleHumansHydrocephalus, Normal PressureMagnetic Resonance ImagingMaleMiddle AgedProspective Studies

Identifiers

PMID30792248
PMCPMC7028668
OpenAlexW2917752113

What OpenQuestion holds

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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.