Evidence map›Paper›PMID 29917239›Full record

ArticleThe Journal of physiology2018

Sodium nitroprusside dilates cerebral vessels and enhances internal carotid artery flow in young men.

Niels D Olesen, Mads Fischer, Niels H Secher

Open access · greenAbstract read
In one paragraph

Article in The Journal of physiology, 2018. 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
1.5field-weighted citation impact, top 18% 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

10 citing papers in PubMed, 1 synthesis or guideline pooled it, 22 citations in OpenAlex.

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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

3 authors at 2 institutions in 2 countries.

Niels D OlesenDepartment of Anaesthesia, The Copenhagen Muscle Research Centre, Rigshospitalet, Copenhagen, Denmark.ORCID 0000-0003-1233-0413
Mads FischerDepartment of Anaesthesia, The Copenhagen Muscle Research Centre, Rigshospitalet, Copenhagen, Denmark.
Niels H SecherDepartment of Anaesthesia, The Copenhagen Muscle Research Centre, Rigshospitalet, Copenhagen, Denmark.
University of Copenhagen · DKCopenhagen University Hospital · DK

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

key pointsSodium nitroprusside lowers blood pressure by vasodilatation but is reported to reduce cerebral blood flow. In healthy young men sodium nitroprusside reduced blood pressure, total peripheral resistance, and arterial CO ABSTRACT: Cerebral autoregulation maintains cerebral blood flow (CBF) despite marked changes in mean arterial pressure (MAP). Sodium nitroprusside (SNP) reduces blood pressure by vasodilatation but is reported to lower CBF, probably by a reduction in its perfusion pressure. We evaluated the influence of SNP on CBF and aimed for a 20% and then 40% reduction in MAP, while keeping MAP ≥ 50 mmHg, to challenge cerebral autoregulation. In 19 healthy men (age 24 ± 4 years; mean ± SD) duplex ultrasound determined right internal carotid (ICA) and vertebral artery (VA) blood flow. The SNP reduced MAP (from 83 ± 8 to 69 ± 8 and 58 ± 4 mmHg; both P < 0.0001), total peripheral resistance, and arterial CO

Indexed as

Cerebrovascular CirculationVascular ResistanceVasodilationAdultBlood Flow VelocityBlood PressureCarotid Artery, InternalHemodynamicsHumansMaleNitroprussideVasodilator AgentsYoung AdultNitroprussideVasodilator Agentscerebral blood flowDoppler ultrasoundhypotensionsodium nitroprusside

Identifiers

PMID29917239
PMCPMC6117596
OpenAlexW2889727398

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.