Evidence map›Paper›PMID 34212250›Full record

ArticleChild's nervous system : ChNS : official journal of the International Society for Pediatric Neurosurgery2021

Monitoring cerebrovascular reactivity in pediatric traumatic brain injury: comparison of three methods.

Francisco Abecasis, Celeste Dias, Agnieszka Zakrzewska, Vitor Oliveira, Marek Czosnyka

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Article in Child's nervous system : ChNS : official journal of the International Society for Pediatric Neurosurgery, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed, 1 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

10 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  4. Cerebral autoregulation in pediatric and neonatal intensive care: A scoping review.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2024
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4 · The record

Corrections and comments

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5 · Who and what money

Authors and funding

5 authors.

Francisco AbecasisPediatric Intensive Care Unit, Faculdade de Medicina, Centro Hospitalar Universitário Lisboa Norte, Universidade de Lisboa, Lisbon, Portugal. francisco.abecasis@chln.min-saude.pt.ORCID 0000-0002-1883-050X
Celeste DiasIntensive Care Department, Neurocritical Care Unit, Centro Hospitalar Universitário de São João, Porto, Portugal.
Agnieszka ZakrzewskaBrain Physics Laboratory, Division of Neurosurgery, Department of Clinical Neurosciences, Addenbrooke's Hospital, University of Cambridge, Cambridge Biomedical Campus, Cambridge, UK.
Vitor OliveiraLaboratory of Cerebral Ultrasound, Neurology Department, Faculdade de Medicina, Centro Hospitalar Universitário Lisboa Norte, Universidade de Lisboa, Lisbon, Portugal.
Marek CzosnykaBrain Physics Laboratory, Division of Neurosurgery, Department of Clinical Neurosciences, Addenbrooke's Hospital, University of Cambridge, Cambridge Biomedical Campus, Cambridge, UK.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo study three different methods of monitoring cerebral autoregulation in children with severe traumatic brain injury.

methodsProspective cohort study of all children admitted to the pediatric intensive care unit at a university-affiliated hospital with severe TBI over a 4-year period to study three different methods of monitoring cerebral autoregulation: pressure-reactivity index (PRx), transcranial Doppler derived mean flow velocity index (Mx), and near-infrared spectroscopy derived cerebral oximetry index (COx).

resultsTwelve patients were included in the study, aged 5 months to 17 years old. An empirical regression analyzing dependence of PRx on cerebral perfusion pressure (CPP) displayed the classic U-shaped distribution, with low PRx values (< 0.3) reflecting intact auto-regulation, within the CPP range of 50-100 mmHg. The optimal CPP was 75-80 mmHg for PRx and COx. The correlation coefficients between the three indices were as follows: PRx vs Mx, r = 0.56; p < 0.0001; PRx vs COx, r = 0.16; p < 0.0001; and COx vs Mx, r = 0.15; p = 0.022. The mean PRx with a cutoff value of 0.3 predicted correctly long-term outcome (p = 0.015).

conclusionsPRx seems to be the most robust index to access cerebrovascular reactivity in children with TBI and has promising prognostic value. Optimal CPP calculation is feasible with PRx and COx.

Indexed as

Brain Injuries, TraumaticCerebrovascular CirculationAgedChildHumansIntracranial PressureMonitoring, PhysiologicOximetryProspective StudiesRetrospective StudiesCerebral perfusion pressureCerebrovascular circulationIntracranial pressurePediatricsTraumatic brain injury

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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.