Evidence map›Paper›PMID 31996979›Full record

ArticleChild's nervous system : ChNS : official journal of the International Society for Pediatric Neurosurgery2020

Non-invasive estimation of cerebral perfusion pressure using transcranial Doppler ultrasonography in children with severe traumatic brain injury.

Nicole F O'Brien, Marlina E Lovett, Melissa Chung, Tensing Maa

Open access · bronzeAbstract read
In one paragraph

Article in Child's nervous system : ChNS : official journal of the International Society for Pediatric Neurosurgery, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
1.3field-weighted citation impact, top 16% 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

12 citing papers in PubMed, 33 citations in OpenAlex.

  1. Review
  2. Article
  3. Bridging brain and lung: optimizing mechanical ventilation in acute brain injury.Journal of anesthesia, analgesia and critical care · 2025
    Review
  4. Article
  5. Article
  6. Article
  7. Article
  8. Review
  9. An update on pediatric traumatic brain injury.Child's nervous system : ChNS : official journal of the International Society for Pediatric Neurosurgery · 2023
    Review
  10. Review
  11. Review
  12. Article
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

4 authors at 1 institution in 1 country.

Nicole F O'BrienDivision of Critical Care Medicine, Department of Pediatrics, Nationwide Children's Hospital, The Ohio State University, 700 Children's Drive, Columbus, OH, 43205, USA. nicole.obrien@nationwidechildrens.org.ORCID 0000-0002-8826-8671
Marlina E LovettDivision of Critical Care Medicine, Department of Pediatrics, Nationwide Children's Hospital, The Ohio State University, 700 Children's Drive, Columbus, OH, 43205, USA.
Melissa ChungDivision of Neurology, Department of Pediatrics, Nationwide Children's Hospital, The Ohio State University, 700 Children's Drive, Columbus, OH, 43205, USA.
Tensing MaaDivision of Critical Care Medicine, Department of Pediatrics, Nationwide Children's Hospital, The Ohio State University, 700 Children's Drive, Columbus, OH, 43205, USA.
Nationwide Children's Hospital · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo identify if cerebral perfusion pressure (CPP) can be non-invasively estimated by either of two methods calculated using transcranial Doppler ultrasound (TCD) parameters.

designRetrospective review of previously prospectively gathered data.

settingPediatric intensive care unit in a tertiary care referral hospital. PATIENTS: Twenty-three children with severe traumatic brain injury (TBI) and invasive intracranial pressure (ICP) monitoring in place.

interventionsTCD evaluation of the middle cerebral arteries was performed daily. CPP at the time of the TCD examination was recorded. For method 1, estimated cerebral perfusion pressure (CPPe) was calculated as: CPPe = MAP × (diastolic flow (Vd)/mean flow (Vm)) + 14. For method 2, critical closing pressure (CrCP) was identified as the intercept point on the x-axis of the linear regression line of blood pressure and flow velocity parameters. CrCP/CPPe was then calculated as MAP-CrCP. MEASUREMENTS AND MAIN

resultsOne hundred eight paired measurements were available. Using patient averaged data, correlation between CPP and CPPe was significant (r = 0.78, p = < 0.001). However, on Bland-Altman plots, bias was 3.7 mmHg with 95% limits of agreement of - 17 to + 25 for CPPe. Using patient averaged data, correlation between CPP and CrCP/CPPe was significant (r = 0.59, p = < 0.001), but again bias was high at 11 mmHg with wide 95% limits of agreement of - 15 to + 38 mmHg.

conclusionsCPPe and CrCP/CPPe do not have clinical value to estimate the absolute CPP in pediatric patients with TBI.

Indexed as

Brain Injuries, TraumaticUltrasonography, Doppler, TranscranialBlood Flow VelocityBlood PressureCerebrovascular CirculationChildHumansIntracranial PressureMiddle Cerebral ArteryRetrospective StudiesCerebral perfusion pressureHead injuryNon-invasive monitoringTranscranial Doppler ultrasoundTraumatic brain injuryUltrasound

Identifiers

PMID31996979
PMCPMC7223617
OpenAlexW3003694739

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.