Does the type of seizure influence heart rate variability changes?

心率变异性 癫痫 医学 心脏病学 内科学 发作类型 麻醉 心率 血压 精神科
作者
Teresa Faria,Susana Rodrigues,Manuel Campelo,Duarte Dias,Ricardo Rego,Helena Rocha,Francisca Sá,Marta Tavares-Silva,Roberto Pinto,Gonçalo Pestana,Ana Oliveira,Jorge Pereira,João Paulo Silva Cunha,Francisco Rocha-Gonçalves,Hernâni Gonçalves,Elisabete Martins
出处
期刊:Epilepsy & Behavior [Elsevier BV]
卷期号:126: 108453-108453 被引量:4
标识
DOI:10.1016/j.yebeh.2021.108453
摘要

Heart rate variability (HRV), an index of the autonomic cardiac activity, is decreased in patients with epilepsy, and a low HRV is associated with a higher risk of sudden death. Generalized tonic-clonic seizures are one of the most consistent risk factors for SUDEP, but the influence (and relative risk) of each type of seizure on cardiac function is still unknown. Our objective was to assess the impact of the type of seizure (focal to bilateral tonic-clonic seizure - FBTCS - versus non-FBTCS) on periictal HRV, in a group of patients with refractory epilepsy and both types of seizures.We performed a 48-hour Holter recording on 121 patients consecutively admitted to our Epilepsy Monitoring Unit. We only included patients with both FBTCS and non-FBTCS on the Holter recording and selected the first seizure of each type to analyze. To evaluate HRV parameters (AVNN, SDNN, RMSSD, pNN20, LF, HF, and LF/HF), we chose 5-min epochs pre- and postictally.We included 14 patients, with a median age of 36 (min-max, 16-55) years and 64% were female. Thirty-six percent had cardiovascular risk factors, but no previously known cardiac disease. In the preictal period, there were no statistically significant differences in HRV parameters, between FBTCS and non-FBTCS. In the postictal period, AVNN, RMSSD, pNN20, LF, and HF were significantly lower, and LF/HF and HR were significantly higher in FBTCS. From preictal to postictal periods, FBTCS elicited a statistically significant rise in HR and LF/HF, and a statistically significant fall in AVNN, RMSSD, pNN20, and HF. Non-FBTCS only caused statistically significant changes in HR (decrease) and AVNN (increase).This work emphasizes the greater effect of FBTCS in autonomic cardiac function in patients with refractory epilepsy, compared to other types of seizures, with a significant reduction in vagal tonus, which may be associated with an increased risk of SUDEP.
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