Evidence map›Paper›PMID 20143247›Full record

Trial reportThe journal of headache and pain2010

No effect of pure oxygen inhalation on headache induced by glyceryl trinitrate.

Dorthe Daugaard, Peer Tfelt-Hansen, Lars Lykke Thomsen, Helle Klingenberg Iversen, Jes Olesen

Open access · hybridAbstract readRandomized Controlled Trial
In one paragraph

Trial report in The journal of headache and pain, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
0.5field-weighted citation impact, top 34% 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

0 citing papers in PubMed, 5 citations in OpenAlex.

No citing paper in PubMed yet.

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 2 institutions in 1 country.

Dorthe DaugaardDepartment of Neurology, Danish Headache Centre, Glostrup Hospital, University of Copenhagen, Glostrup, Copenhagen, Denmark.
Peer Tfelt-Hansen
Lars Lykke Thomsen
Helle Klingenberg Iversen
Jes Olesen
Glostrup Hospital · DKUniversity of Copenhagen · DK

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Inhalation of hyperbaric oxygen has been used as an experimental treatment for migraine and pure oxygen is an established treatment for cluster headache. Intravenous glyceryl trinitrate (GTN) is an established headache model. In the present study the possibility of decreasing the headache by inhalation of pure oxygen was explored in a double-blind crossover design in 18 healthy subjects. Inhalation of air served as placebo. The subjects received intravenous GTN (0.25 microg/kg/min) for 20 min. Headache was scored for 85 min. Sixteen of 18 (89%) subjects experienced GTN-induced headache after O(2)-inhalation and 17/18 (94%) experienced GTN-induced headache after air. The mean peak headache scores were 1.9 and 2.4, respectively, on a numerical scale of 0-10. Oxygen inhalation did not have effect on GTN-induced headache, most likely because the theoretical decrease in NO levels, due to faster metabolism of NO, is too small to be detected in the GTN headache model.

Indexed as

AdultCross-Over StudiesDouble-Blind MethodFemaleHeadacheHumansMaleNitric OxideNitric Oxide DonorsNitroglycerinOxygenOxygen Inhalation TherapyPain MeasurementTreatment FailureVasodilator AgentsYoung AdultNitric OxideNitric Oxide DonorsNitroglycerinOxygenVasodilator Agents

Identifiers

PMID20143247
PMCPMC3452287
OpenAlexW2037758296

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.