Evidence map›Paper›PMID 22176808›Full record

Trial reportJournal of critical care2012

Effect of osmotic agents on regional cerebral blood flow in traumatic brain injury.

Michael T Scalfani, Rajat Dhar, Allyson R Zazulia, Tom O Videen, Michael N Diringer

Abstract readRandomized Controlled Trial
In one paragraph

Trial report in Journal of critical care, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed, 2 pooled it
1.9field-weighted citation impact, top 15% 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

8 citing papers in PubMed, 2 syntheses or guidelines pooled it, 49 citations in OpenAlex.

  1. Pooled it
  2. Guideline
  3. Review
  4. Article
  5. Article
  6. Review
  7. Review
  8. 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

5 authors at 1 institution in 1 country.

Michael T ScalfaniDepartment of Neurology, Washington University School of Medicine, St Louis, MO 63110, USA.
Rajat Dhar
Allyson R Zazulia
Tom O Videen
Michael N Diringer
Washington University in St. Louis · US

Funding

Washington University Institute of Clinical and Translational Sciences (UL1)UL1RR024992 · NCRR · WASHINGTON UNIVERSITY · PI EVANOFF, BRADLEY A · 2007 to 2011
$45.4M
Washington University Institute of Clinical and Translational SciencesUL1TR000448 · NCATS · WASHINGTON UNIVERSITY · PI EVANOFF, BRADLEY A · 2012 to 2016
$41.4M
PHYSIOLOGIC RESPONSE TO OSMOTIC THERAPY IN BRAIN EDEMAP01NS035966 · NINDS · WASHINGTON UNIVERSITY · PI POWERS, WILLIAM J · 1997 to 2006
$6.3M
PHYSIOLOGIC RESPONSE TO OSMOTIC THERAPY IN CEREBRAL EDEMA PATIENTSP50NS035966 · NINDS · WASHINGTON UNIVERSITY · PI DIRINGER, MICHAEL N · 2007 to 2007
$1.0M
NCATS NIH HHS UL1 TR000448NCRR NIH HHS UL1 RR024992NINDS NIH HHS 5P01NS035966NINDS NIH HHS NS03596610NINDS NIH HHS P01 NS035966NINDS NIH HHS P50 NS035966
6 · The paper itself

Abstract

purposeCerebral blood flow (CBF) is reduced after severe traumatic brain injury (TBI) with considerable regional variation. Osmotic agents are used to reduce elevated intracranial pressure (ICP), improve cerebral perfusion pressure, and presumably improve CBF. Yet, osmotic agents have other physiologic effects that can influence CBF. We sought to determine the regional effect of osmotic agents on CBF when administered to treat intracranial hypertension. MATERIALS AND

methodsIn 8 patients with acute TBI, we measured regional CBF with positron emission tomography before and 1 hour after administration of equi-osmolar 20% mannitol (1 g/kg) or 23.4% hypertonic saline (0.686 mL/kg) in regions with focal injury and baseline hypoperfusion (CBF <25 mL per 100 g/min).

resultsThe ICP fell (22.4 ± 5.1 to 15.7 ± 7.2 mm Hg, P = .007), and cerebral perfusion pressure rose (75.7 ± 5.9 to 81.9 ± 10.3 mm Hg, P = .03). Global CBF tended to rise (30.9 ± 3.7 to 33.1 ± 4.2 mL per 100 g/min, P = .07). In regions with focal injury, baseline flow was 25.7 ± 9.1 mL per 100 g/min and was unchanged; in hypoperfused regions (15% of regions), flow rose from 18.6 ± 5.0 to 22.4 ± 6.4 mL per 100 g/min (P < .001). Osmotic therapy reduced the number of hypoperfused brain regions by 40% (P < .001).

conclusionOsmotic agents, in addition to lowering ICP, improve CBF to hypoperfused brain regions in patients with intracranial hypertension after TBI.

Indexed as

AdultBrain InjuriesCerebrovascular CirculationDiuretics, OsmoticFemaleHumansIntracranial PressureMaleMannitolMiddle AgedPositron-Emission TomographySaline Solution, HypertonicDiuretics, OsmoticMannitolSaline Solution, Hypertonic

Identifiers

PMID22176808
PMCPMC3310941
OpenAlexW2053833290

What OpenQuestion holds

Textmetadata
LicenceTDM
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.