Evidence map›Paper›PMID 28547321›Full record

ArticleNeurocritical care2017

Relationship Between Brain Pulsatility and Cerebral Perfusion Pressure: Replicated Validation Using Different Drivers of CPP Change.

Leanne A Calviello, Nicolás de Riva, Joseph Donnelly, Marek Czosnyka, Peter Smielewski, David K Menon, Frederick A Zeiler

Open access · hybridAbstract readValidation Study
In one paragraph

Article in Neurocritical care, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
1.4field-weighted citation impact, top 19% 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

7 citing papers in PubMed, 19 citations in OpenAlex.

  1. Article
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  4. Cerebroarterial pulsatility and resistivity indices are associated with cognitive impairment and white matter hyperintensity in elderly subjects: A phase-contrast MRI study.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 3 countries.

Leanne A CalvielloDivision of Neurosurgery, Department of Clinical Neurosciences, Addenbrooke's Hospital, University of Cambridge, Cambridge, UK. leannecalviello@gmail.com.
Nicolás de RivaDivision of Neuroanesthesia, Department of Anesthesiology, Hospital Clinic, Universitat de Barcelona, Barcelona, Spain.
Joseph DonnellyDivision of Neurosurgery, Department of Clinical Neurosciences, Addenbrooke's Hospital, University of Cambridge, Cambridge, UK.
Marek CzosnykaDivision of Neurosurgery, Department of Clinical Neurosciences, Addenbrooke's Hospital, University of Cambridge, Cambridge, UK.
Peter SmielewskiDivision of Neurosurgery, Department of Clinical Neurosciences, Addenbrooke's Hospital, University of Cambridge, Cambridge, UK.
David K MenonDivision of Anesthetics, Addenbrooke's Hospital, University of Cambridge, Cambridge, UK.
Frederick A ZeilerDivision of Anesthetics, Addenbrooke's Hospital, University of Cambridge, Cambridge, UK.
University of Cambridge · GBAddenbrooke's Hospital · GBNational Institute for Health Research · GBUniversitat de Barcelona · ES

Funding

Medical Research Council G0600986
6 · The paper itself

Abstract

backgroundDetermination of relationships between transcranial Doppler (TCD)-based spectral pulsatility index (sPI) and pulse amplitude (AMP) of intracranial pressure (ICP) in 2 groups of severe traumatic brain injury (TBI) patients (a) displaying plateau waves and (b) with unstable mean arterial pressure (MAP).

methodsWe retrospectively reviewed patients with severe TBI and continuous TCD monitoring displaying either plateau waves or unstable MAP from 1992 to 1998. We utilized linear and nonlinear regression techniques to describe both cohorts: cerebral perfusion pressure (CPP) versus AMP, CPP versus sPI, mean ICP versus ICP AMP, mean ICP versus sPI, and AMP versus sPI.

resultsNonlinear regression techniques were employed to analyze the relationships with CPP. In plateau wave and unstable MAP patients, CPP versus sPI displayed an inverse nonlinear relationship (R

conclusionsThere is an inverse relationship through nonlinear regression between CPP versus AMP and CPP versus sPI display. This provides evidence to support a previously-proposed model of TCD pulsatility index. ICP shows a positive linear correlation with AMP and sPI, which is also established between AMP and sPI.

Indexed as

AdolescentAdultAgedArterial PressureBrain Injuries, TraumaticCerebrovascular CirculationCritical CareFemaleHumansIntracranial PressureMaleMiddle AgedNeurophysiological MonitoringPulsatile FlowRetrospective StudiesUltrasonography, Doppler, TranscranialCerebral perfusion pressureIntracranial pressureNeurocritical carePulsatility indexTranscranial dopplerTraumatic brain injury

Identifiers

PMID28547321
PMCPMC5700211
OpenAlexW2619506593

What OpenQuestion holds

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LicenceCC BY
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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.