Home orthostatic training in vasovagal syncope modifies autonomic tone: results of a randomized, placebo-controlled pilot study.

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
Maw Pin TanSteve W Parry

Abstract

To detect possible autonomic changes due to home orthostatic training (HOT) and to assess the feasibility of a larger, placebo-controlled study of HOT in vasovagal syncope (VVS). Twenty-two consecutive patients, aged 18-85, diagnosed with VVS following a positive head-up tilt-table test were randomized to 40 min of HOT (n = 12) or 10 min of sham training (n = 10) daily for 6 months. Baroreflex sensitivity (BRS) and heart rate variability (HRV) were measured at weeks 0, 1, 4, and 24. Symptom response was assessed by event diaries. Home orthostatic training resulted in increases in up and down slope BRS at week 4 (e(log difference) = 1.59, 95% CI = 0.84-3.03 and 1.79, 95% CI = 1.00-3.22) and week 24 (e(log difference) = 1.75, 95% CI = 1.01-3.06 and 1.53, 95% CI = 0.66-2.68) compared with placebo. Relative improvements in low- and high-frequency HRV were also observed in the HOT group compared with placebo at week 4 (e(log difference) = 3.22, 95% CI = 1.06-9.86 and 3.19, 95% CI = 1.03-10.59) and week 24 (e(log difference) = 2.11, 95% CI = 0.72-6.17 and 2.13, 95% CI = 0.52-8.79). Fifty percentage of HOT subjects and 20% of control subjects were syncope-free at 6 months. This was the first placebo-controlled study in orthostatic tra...Continue Reading

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Apr 4, 2019·Prof. Piotr Kulakowski

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Citations

Jan 22, 2010·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·Richard Sutton
Feb 25, 2010·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·Hugo Ector
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