Evidence map›Paper›PMID 31208249›Full record

ArticleJournal of the American Heart Association2019

Impact of Cardiovascular Neurohormones on Onset of Vasovagal Syncope Induced by Head-up Tilt.

Parisa Torabi, Fabrizio Ricci, Viktor Hamrefors, Olle Melander, Richard Sutton, David G Benditt, Artur Fedorowski

Open access · goldAbstract read
In one paragraph

Article in Journal of the American Heart Association, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 1 pooled it
3.3field-weighted citation impact, top 8% 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

16 citing papers in PubMed, 1 synthesis or guideline pooled it, 28 citations in OpenAlex.

  1. Cardioneuroablation for the treatment of reflex syncope and functional bradyarrhythmias: A Scientific Statement of the European Heart Rhythm Association (EHRA) of the ESC, the Heart Rhythm Society (HRS), the Asia Pacific Heart Rhythm Society (APHRS) and the Latin American Heart Rhythm Society (LAHRS).Europace : European pacing, arrhythmias, and cardiac electrophysiology : journal of the working groups on cardiac pacing, arrhythmias, and cardiac cellular electrophysiology of the European Society of Cardiology · 2024
    Guideline
  2. Article
  3. Article
  4. Article
  5. Review
  6. Twenty-five years of research on syncope.Europace : European pacing, arrhythmias, and cardiac electrophysiology : journal of the working groups on cardiac pacing, arrhythmias, and cardiac cellular electrophysiology of the European Society of Cardiology · 2023
    Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Review
  14. Timing of Circulatory and Neurological Events in Syncope.Frontiers in cardiovascular medicine · 2020
    Review
  15. Article
  16. Neurohormones in Vasovagal Syncope: Are They Important?Journal of the American Heart Association · 2019
    Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors at 4 institutions in 4 countries.

Parisa Torabi1 Department of Clinical Sciences Lund University Malmö Sweden.
Fabrizio Ricci1 Department of Clinical Sciences Lund University Malmö Sweden.
Viktor Hamrefors1 Department of Clinical Sciences Lund University Malmö Sweden.
Olle Melander1 Department of Clinical Sciences Lund University Malmö Sweden.
Richard Sutton6 National Heart and Lung Institute Imperial College Hammersmith Hospital Campus London United Kingdom.
David G Benditt7 Cardiac Arrhythmia Center Cardiovascular Division University of Minnesota Minneapolis MN.
Artur Fedorowski1 Department of Clinical Sciences Lund University Malmö Sweden.
Lund University · SESkåne University Hospital · SEHammersmith Hospital · GBUniversity of Minnesota · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background Vasovagal reflex is the most common form of syncope, but the pathophysiological mechanisms that initiate the reflex are not well understood. We aimed to study supine and early orthostatic levels of the neurohormones involved in control of circulatory homeostasis in relation to the onset of tilt-induced vasovagal syncope (VVS). Methods and Results A total of 827 patients who were investigated for unexplained syncope with head-up tilt test (HUT) and optional nitroglycerin provocation (Italian protocol) had blood samples collected while supine and after 3-minutes of HUT. Of these, 173 (20.9%) patients developed VVS during drug-free HUT, 161 of whom (males 44.7%; age 45±21 years) had complete data. We analyzed levels of epinephrine, norepinephrine, C-terminal pro-arginine vasopressin, C-terminal endothelin-1, and midregional fragments of pro-atrial natriuretic peptide and pro-adrenomedullin in relation to time from tilt-up to onset of VVS. We applied a linear regression model adjusted for age and sex. The mean time to syncope was 11±7 minutes. Older age (β=0.13; SE=0.03, P<0.001), higher supine systolic blood pressure (β=0.06; SE=0.03, P=0.02), and higher supine midregional fragment of pro-adrenomedullin predicted longer time to syncope (β=2.31; SE=0.77, P=0.003), whereas supine levels of other neurohormones were not associated with time to syncope. Among 151 patients who developed VVS later than 3 minutes of HUT, increase in epinephrine (β=-3.24; SE=0.78, P<0.001) and C-terminal pro-arginine vasopressin (β=-2.07; SE=0.61, P=0.001) at 3 minutes of HUT were related to shorter time to syncope. Conclusions Older age, higher blood pressure, and higher level of pro-adrenomedullin are associated with later onset of VVS during tilt testing, whereas greater increase of tilt-induced epinephrine and vasopressin release correlate with shorter time to syncope.

Indexed as

Tilt-Table TestAdultAgedCardiovascular SystemFemaleHumansMaleMiddle AgedNeurotransmitter AgentsSyncope, VasovagalNeurotransmitter Agentsautonomic functionbiomarkerneurocardiologysyncope

Identifiers

PMID31208249
PMCPMC6645642
OpenAlexW2949644176

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.