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Published in: Clinical Autonomic Research 2/2019

01-04-2019 | Research Article

Deceleration and acceleration capacities of heart rate in patients with drug-resistant epilepsy

Authors: Hongyun Liu, Zhao Yang, Fangang Meng, Yuguang Guan, Yanshan Ma, Shuli Liang, Jiuluan Lin, Longsheng Pan, Mingming Zhao, Hongwei Hao, Guoming Luan, Jianguo Zhang, Luming Li

Published in: Clinical Autonomic Research | Issue 2/2019

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Abstract

Objective

Epilepsy and seizures can have dramatic effects on cardiac function. The aim of the present study was to investigate deceleration capacity, acceleration capacity and their 24-h fluctuations of heart rate variability in patients with drug-resistant epilepsy.

Methods

Deceleration capacity, acceleration capacity of heart rate and their 24-h dynamics derived from the phase rectified signal averaging method as well as traditional measures were analyzed in 39 patients with drug-resistant epilepsy and 33 healthy control subjects using 24-h electrocardiogram recordings. The discriminatory power of heart rate variability measures were validated by assessment of the area under the receiver operating characteristic curve. Net reclassification improvement and integrated discrimination improvement models were also estimated.

Results

Both deceleration capacity and absolute values of acceleration capacity were significantly lower in patients with drug-resistant epilepsy. The abnormal suppression of absolute deceleration capacity and acceleration capacity values were observed throughout the 24-h recording time (peaked at about 3 to 5 A.M.). Deceleration capacity had the greatest discriminatory power to differentiate the patients from the healthy controls. Moreover, in both net reclassification improvement and integrated discrimination improvement models, the combination of acceleration capacity or deceleration capacity with traditional heart rate variability measures has greater discriminatory power than any of the single heart rate variability features.

Interpretation

Drug-resistant epilepsy was associated with a significant inhibition of vagal modulation of heart rate, which was more pronounced during the night than during the day. These findings indicate that phase rectified signal averaging method may serve as a complementary approach for characterizing and understanding the neuro-pathophysiology in epilepsy, and may provide a new clue to sudden unexpected death in epilepsy.
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Metadata
Title
Deceleration and acceleration capacities of heart rate in patients with drug-resistant epilepsy
Authors
Hongyun Liu
Zhao Yang
Fangang Meng
Yuguang Guan
Yanshan Ma
Shuli Liang
Jiuluan Lin
Longsheng Pan
Mingming Zhao
Hongwei Hao
Guoming Luan
Jianguo Zhang
Luming Li
Publication date
01-04-2019
Publisher
Springer Berlin Heidelberg
Published in
Clinical Autonomic Research / Issue 2/2019
Print ISSN: 0959-9851
Electronic ISSN: 1619-1560
DOI
https://doi.org/10.1007/s10286-018-0569-0

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