Evidence map›Paper›PMID 35739555›Full record

Observational studyFluids and barriers of the CNS2022

Gait apraxia evaluation in normal pressure hydrocephalus using inertial sensors. Clinical correlates, ventriculoperitoneal shunt outcomes, and tap-test predictive capacity.

Alberto Ferrari, David Milletti, Pierpaolo Palumbo, Giulia Giannini, Sabina Cevoli, Elena Magelli, Luca Albini-Riccioli, Paolo Mantovani, Pietro Cortelli, Lorenzo Chiari and 1 more

Open access · goldAbstract readObservational Study
In one paragraph

Observational study in Fluids and barriers of the CNS, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 1 pooled it
1.6field-weighted citation impact, top 18% 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, 1 synthesis or guideline pooled it, 17 citations in OpenAlex.

  1. Pooled it
  2. Observational
  3. Review
  4. Article
  5. Long-term gait improvement following a CSF tap test in idiopathic normal pressure hydrocephalus patients: an analysis of clinical outcomes.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2025
    Article
  6. Article
  7. Review
  8. Article
  9. Article
  10. 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

11 authors at 3 institutions in 1 country.

Alberto Ferrari *Science & Technology Park for Medicine, TPM, Mirandola, Modena, Italy.
David Milletti *Unit of Rehabilitation Medicine, IRCCS Istituto delle Scienze Neurologiche di Bologna, Bellaria Hospital Via Altura 3, 40139, Bologna, Italy. david.milletti@isnb.it.
Pierpaolo Palumbo *Department of Electrical, Electronic, and Information Engineering "Guglielmo Marconi" (DEI), University of Bologna, Bologna, Italy.
Giulia GianniniDepartment of Biomedical and Neuromotor Sciences (DIBINEM), University of Bologna, Bologna, Italy.
Sabina CevoliUnit of Neurology, IRCCS Istituto delle Scienze Neurologiche di Bologna, Bologna, Italy.
Elena MagelliUnit of Rehabilitation Medicine, IRCCS Istituto delle Scienze Neurologiche di Bologna, Bellaria Hospital Via Altura 3, 40139, Bologna, Italy.
Luca Albini-RiccioliUnit of Neuroradiology, IRCCS Istituto delle Scienze Neurologiche di Bologna, Bologna, Italy.
Paolo MantovaniUnit of Neurosurgery, IRCCS Istituto delle Scienze Neurologiche di Bologna, Bologna, Italy.
Pietro CortelliDepartment of Biomedical and Neuromotor Sciences (DIBINEM), University of Bologna, Bologna, Italy.
Lorenzo ChiariDepartment of Electrical, Electronic, and Information Engineering "Guglielmo Marconi" (DEI), University of Bologna, Bologna, Italy.
Giorgio PalandriUnit of Neurosurgery, IRCCS Istituto delle Scienze Neurologiche di Bologna, Bologna, Italy.
Istituto delle Scienze Neurologiche di Bologna · ITUniversity of Bologna · ITLaboratori Guglielmo Marconi (Italy) · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIdiopathic normal pressure hydrocephalus (iNPH) is a neurological condition with gait apraxia signs from its early manifestation. Ventriculoperitoneal shunt (VPS) is a surgical procedure available for treatment. The Cerebrospinal fluid Tap Test (CSF-TT) is a quick test used as selection criterion for VPS treatment. Its predictive capacity for VPS outcomes is still sub judice. This study is aimed to test the hypothesis that wearable motion sensors provide valid measures to manage iNPH patients with gait apraxia.

methodsForty-two participants of the Bologna PRO-Hydro observational cohort study were included in the analyses. The participants performed the Timed Up and Go (TUG) and the 18 m walking test (18mW) with inertial sensors at baseline, three days after the CSF-TT, and six months after VPS. 21 instrumental variables described gait and postural transitions from TUG and 18mW recordings. Furthermore, participants were clinically assessed with scales (clinical variables). We tested the hypothesis by analysing the concurrent validity of instrumental and clinical variables, their individual- and group-level responsiveness to VPS, and their predictive validity for VPS outcomes after CSF-TT.

resultsThe instrumental variables showed moderate to high correlation with the clinical variables. After VPS, most clinical and instrumental variables showed statistically significant improvements that reflect a reduction of apraxic features of gait. Most instrumental variables, but only one clinical variable (i.e., Tinetti POMA), had predictive value for VPS outcomes (significant adjusted R

conclusionsThese results confirm that wearable inertial sensors may represent a valid tool to complement clinical evaluation for iNPH assessment and prognosis.

Indexed as

Gait Disorders, NeurologicHydrocephalus, Normal PressureGaitGait ApraxiaHumansVentriculoperitoneal ShuntGait analysisGait apraxiaIdiopathic normal pressure hydrocephalusTap testVentriculoperitoneal shunt

Identifiers

PMID35739555
PMCPMC9219204
OpenAlexW4283311060

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.