Evidence map›Paper›PMID 20705701›Full record

ArticleAJNR. American journal of neuroradiology2010

Improvement in angiographic cerebral vasospasm after intra-arterial verapamil administration.

J V Sehy, W E Holloway, S-P Lin, D T Cross, C P Derdeyn, C J Moran

Open access · hybridAbstract read
In one paragraph

Article in AJNR. American journal of neuroradiology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
2.2field-weighted citation impact, top 13% 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

13 citing papers in PubMed, 44 citations in OpenAlex.

  1. Article
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  3. Review
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  8. Intra-arterial verapamil post-thrombectomy is feasible, safe, and neuroprotective in stroke.Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism · 2017
    Article
  9. Aneurysmal Subarachnoid Hemorrhage.Journal of neurosurgical anesthesiology · 2015
    Review
  10. Article
  11. Article
  12. Article
  13. 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

6 authors at 1 institution in 1 country.

J V SehyMallinckrodt Institute of Radiology, Washington University School of Medicine, St. Louis, Missouri, USA. sehyj1@yahoo.com
W E Holloway
S-P Lin
D T Cross
C P Derdeyn
C J Moran
Mallinckrodt (United States) · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

background and purposeEndovascular options for therapy for patients with vasospasm after SAH include angioplasty and intra-arterial vasodilator infusion. Preliminary studies of the effects of the calcium channel antagonist verapamil on angiographic vasospasm have yielded mixed and/or qualitative results. In this study, improvement in angiographic vasospasm after intra-arterial verapamil administration is demonstrated with quantitative, blinded methods. MATERIALS AND

methodsThis retrospective observational case series includes 12 patients with vasospasm after SAH who collectively received 16 treatments with intra-arterial verapamil during a 2-year period at our institution. The exclusion criterion was concurrent treatment with angioplasty. Blinded reviewers quantitatively evaluated angiograms from each patient and/or treatment after presentation with SAH and before and after intra-arterial treatment of vasospasm.

resultsPatients were treated with intra-arterial verapamil for vasospasm 9 ± 4 days after SAH with a range from 1 to 16 days. For the 34 arterial distributions treated, the segment with the worst angiographic vasospasm from each arterial distribution averaged 51 ± 13% stenosis, which improved to 29 ± 18% stenosis (P < .001). There was no significant difference in treatment effect in proximal arterial segments, which may be amenable to angioplasty, compared with distal segments (P > .05). There was no significant difference in treatment effect in arterial segments previously subjected to angioplasty compared with other segments (P > .05).

conclusionsIntra-arterially administered verapamil improves angiographic vasospasm after SAH when administered at 10 ± 3 mg per arterial distribution. Optimal dose, infusion rate, and retreatment interval remain to be determined. Randomized controlled trials are needed to prove efficacy in the treatment of clinical vasospasm.

Indexed as

AdultCalcium Channel BlockersCerebral AngiographyFemaleHumansInfusions, Intra-ArterialMaleMiddle AgedRetrospective StudiesSubarachnoid HemorrhageTreatment OutcomeVasospasm, IntracranialVerapamilYoung AdultCalcium Channel BlockersVerapamil

Identifiers

PMID20705701
PMCPMC7964023
OpenAlexW1968018977

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.