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Cardiac Conduction Delay for Sodium Channel Antagonist Antiseizure Medications

敌手 钠通道 医学 钠通道阻滞剂 心脏病学 麻醉 内科学 化学 受体 有机化学
作者
Nathan A. Shlobin,Jimmy Li,Josemir W. Sander,Mark R. Keezer,Roland D. Thijs
出处
期刊:Neurology [Lippincott Williams & Wilkins]
卷期号:104 (4)
标识
DOI:10.1212/wnl.0000000000210302
摘要

People with epilepsy are at risk of cardiac arrhythmias. Whether this association results from epilepsy, antiseizure medications (ASMs) such as sodium channel blockers (NABs), or other factors has not been systematically assessed. The aims of this study were to quantify the odds of cardiac conduction delays (CCDs) on electrocardiogram in older people with active epilepsy using vs not using NABs, to determine the prevalence of CCDs by NABs, and to examine the association of demographic and clinical factors with CCDs. This was a cross-sectional study of the Canadian Longitudinal Study on Aging. We defined active epilepsy as self-reported epilepsy and taking ASM. Sodium channel blockers (NABs) were phenytoin, lamotrigine, carbamazepine, oxcarbazepine, or lacosamide. We compared CCDs between people with epilepsy using NABs and those not using NABs; determined the prevalence of CCDs by NAB type; and fitted a logistic regression model for each abnormal ECG outcome as a function of active epilepsy and NAB use while adjusting for demographics and clinical factors. Multiple imputations handled missing data (200 iterations). In total, 30,077 people, with mean age 63.0 (10.25) years and 50.9% female, were studied, including 141 people with active epilepsy who used NABs, 68 who did not use NABs, and 29,868 who did not have active epilepsy. Demographics between groups and relative to people without epilepsy were similar. People with active epilepsy taking NABs were more likely to have prolonged QRS (odds ratio [OR] = 2.85 [95% CI 1.09-7.43]) and any CCD (1.94 [1.03-3.63]) compared with those with active epilepsy without NAB. After adjusting for Framingham score and heart rate-lowering medications, NAB use was associated with prolonged QTc (OR = 1.52 [95% CI 1.06-2.18]) and any CCD (1.78 [1.16, 2.74]). The prevalence of any CCD was 36.1% [95% CI 24.2%-49.4%] for carbamazepine, 45.5% [31.7%-58.5%] for phenytoin, and 54.7% [28.9%-75.6%] lamotrigine. Epilepsy was not associated with any CCD. People with active epilepsy using NABs more commonly have CCDs. NAB use is associated with CCD, whereas active epilepsy is not.
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