ArticleArquivos brasileiros de cardiologia2016
Analysis of Heart Rate Variability Before and During Tilt Test in Patients with Cardioinhibitory Vasovagal Syncope.
Article in Arquivos brasileiros de cardiologia, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.
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Who cites it
11 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Heart rate variability in people with multiple sclerosis: A systematic review and meta-analysis.Acta neurologica Belgica · 2026Pooled it
- Evaluation of the clinical value of heart rate variability in predicting vasovagal syncope.Frontiers in cardiovascular medicine · 2025Article
- Autonomic responses in young females with typical vasovagal syncope.Internal and emergency medicine · 2024Article
- Assessing the efficacy of machine learning algorithms for syncope classification: A systematic review.MethodsX · 2024Review
- Uncovering sympathetic nervous system dysfunction in disorders of consciousness via heart rate variability during head-up tilt test.Physiological reports · 2024Article
- Clinical and Autonomic Profile, and Modified Calgary Score for Children and Adolescents with Presumed Vasovagal Syncope Submitted to the Tilt Test.Arquivos brasileiros de cardiologia · 2023Observational
- Development of a nomogram model to predict malignant vasovagal syncope in Chinese children.Frontiers in pediatrics · 2023Article
- Simultaneous beat-to-beat heart rate and systolic blood pressure variability in patients with and without neurally mediated syncope.Journal of cardiovascular and thoracic research · 2022Article
- Electrocardiographic Patterns in Patients with Neurally Mediated Syncope.Medicina (Kaunas, Lithuania) · 2021Review
- Cardioinhibitory syncope: from pathophysiology to treatment-should we think on cardioneuroablation?Journal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing · 2020Review
- Physical Vascular Therapy (BEMER) Affects Heart Rate Asymmetry in Patients With Coronary Heart Disease.In vivo (Athens, Greece)Article
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Authors and funding
2 authors.
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Abstract
backgroundCardioinhibitory vasovagal response is uncommon during the tilt test (TT). Heart rate variability (HRV) by use of spectral analysis can distinguish patients with that response.
objectiveTo compare the HRV in patients with cardioinhibitory vasovagal syncope (case group - G1) with that in patients without syncope and with negative response to TT (control group - G2).
methods64 patients were evaluated (mean age, 36.2 years; 35 men) and submitted to TT at 70 degrees, under digital Holter monitoring. The groups were paired for age and sex (G1, 40 patients; G2, 24).
resultsIn G1, 21 patients had a type 2A response and 19 had type 2B, with mean TT duration of 20.4 minutes. There was a greater low frequency (LF) component (11,6 versus 4,5 ms2, p=0.001) and a lower low/high frequency ratio in the supine position (3,9 versus 4,5 ms2, p=0.008) in G1, with no difference during TT between the groups. Applying the receiver operating characteristic curve for cardioinhibitory response, the area under the curve was 0.74 for the LF component in the supine position (p = 0.001). The following were observed for the cutoff point of 0.35 ms(2) for the LF component: sensitivity, 97.4%; specificity, 83.3%; positive predictive value, 85.3%; negative predictive value, 96.9%; and positive likelihood ratio, 5.8.
conclusionHRV in the supine position allowed identifying patients with syncope and cardioinhibitory response with a high negative predictive value and likelihood ratio of 5.8.
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