Evidence map›Paper›PMID 33454731›Full record

ArticleJournal of biomechanical engineering2021

Association Between Resistance to Cerebrospinal Fluid Flow Near the Foramen Magnum and Cough-Associated Headache in Adult Chiari Malformation Type I.

Alaaddin Ibrahimy, Chi-Wen Christina Huang, Abraham F Bezuidenhout, Philip A Allen, Rafeeque A Bhadelia, Francis Loth

Open access · greenAbstract read
In one paragraph

Article in Journal of biomechanical engineering, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
2.7field-weighted citation impact, top 10% 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

11 citing papers in PubMed, 15 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

6 authors at 4 institutions in 2 countries.

Alaaddin IbrahimyDepartment of Mechanical Engineering, The University of Akron, 302 E Buchtel Avenue, Akron, OH 44325.
Chi-Wen Christina HuangDepartment of Radiology, Wan Fang Hospital, Taipei Medical University, No. 250, Wuxing Street, Xinyi District, Taipei City 110, Taiwan.
Abraham F BezuidenhoutBeth Israel Deaconess Medical Center, Department of Radiology, Harvard Medical School, 330 Brookline Avenue, Boston, MA 02215.
Philip A AllenDepartment of Psychology, The University of Akron, 302 E Buchtel Avenue, Akron, OH 44325.
Rafeeque A BhadeliaBeth Israel Deaconess Medical Center, Department of Radiology, Harvard Medical School, 330 Brookline Avenue, Boston, MA 02215.
Francis LothDepartment of Mechanical Engineering, The University of Akron, 302 E Buchtel Avenue, Akron, OH 44325.
University of Akron · USBeth Israel Deaconess Medical Center · USHarvard University · USTaipei Medical University · TW

Funding

Novel MR Image Processing as an Objective Diagnostic Test for Chiari MalformationR15NS109957 · NINDS · UNIVERSITY OF AKRON · PI ALLEN, PHILIP A. · 2019 to 2019
$469k
NINDS NIH HHS R15 NS109957
6 · The paper itself

Abstract

Cough-associated headaches (CAHs) are thought to be distinctive for Chiari malformation type I (CMI) patients and have been shown to be related to the motion of cerebrospinal fluid (CSF) near the foramen magnum (FM). We used computational fluid dynamics (CFD) to compute patient-specific resistance to CSF motion in the spinal canal for CMI patients to determine its accuracy in predicting CAH. Fifty-one symptomatic CMI patients with cerebellar tonsillar position (CTP) ≥ 5 mm were included in this study. The patients were divided into two groups based on their symptoms (CAH and non-CAH) by review of the neurosurgical records. CFD was utilized to simulate CSF motion, and the integrated longitudinal impedance (ILI) was calculated for all patients. A receiver operating characteristic (ROC) curve was evaluated for its accuracy in predicting CAH. The ILI for CMI patients with CAH (776 dyn/cm5, 288-1444 dyn/cm5; median, interquartile range) was significantly larger compared to non-CAH (285 dyn/cm5, 187-450 dyn/cm5; p = 0.001). The ILI was more accurate in predicting CAH in CMI patients than the CTP when the comparison was made using the area under the ROC curve (AUC) (0.77 and 0.70, for ILI and CTP, respectively). ILI ≥ 750 dyn/cm5 had a sensitivity of 50% and a specificity of 95% in predicting CAH. ILI is a parameter that is used to assess CSF blockage in the spinal canal and can predict patients with and without CAH with greater accuracy than CTP.

Indexed as

Arnold-Chiari MalformationCerebrospinal FluidCoughForamen MagnumHeadacheAdultFemaleHumansHydrodynamicsMaleMiddle Agedcerebrospinal fluidChiari malformation type Icomputational fluid dynamicscough-associated headachemagnetic resonance imaging

Identifiers

PMID33454731
PMCPMC8086178
OpenAlexW3123646896

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.