Effect of methamphetamine dependence on heart rate variability.

Effect of methamphetamine dependence on heart rate variability.
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DOI:
10.1111/j.1369-1600.2010.00270.x
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发表时间:
2012-05
期刊:
影响因子:
3.4
通讯作者:
Perry W
Perry W
中科院分区:
医学2区
文献类型:
--
作者:
Henry BL;Minassian A;Perry W

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甲基苯丙胺 (METH) 是一种越来越受欢迎且高度成瘾的兴奋剂,与自主神经系统 (ANS) 功能障碍、心血管病理和神经毒性有关。心率变异性 (HRV) 已被用于评估自主神经功能并预测心脏病和药物中毒的死亡率,但尚未在冰毒使用中得到表征。我们记录了目前戒毒且有冰毒依赖史的个体样本中的 HRV,与年龄和性别匹配的未吸毒对照受试者进行比较。在 5 分钟休息期间,使用时域、频域和非线性熵分析对 17 名先前依赖 METH 的个体和 21 名未使用药物的对照个体进行 HRV 评估。与对照组相比,METH 依赖组的 HRV 显着降低,副交感神经活动减少,心跳复杂性降低。最近使用冰毒与交感神经张力增加有关。通过多种分析方法评估,长期接触冰毒可能与心率变异性降低、迷走神经功能受损和心率复杂性降低有关。我们讨论并回顾了 HRV 受损可能与长期使用冰毒的心脏毒性或神经毒性作用有关的证据。
Methamphetamine (METH) is an increasing popular and highly addictive stimulant associated with autonomic nervous system (ANS) dysfunction, cardiovascular pathology, and neurotoxicity. Heart rate variability (HRV) has been used to assess autonomic function and predict mortality in cardiac disorders and drug intoxication, but has not been characterized in METH use. We recorded HRV in a sample of currently abstinent individuals with a history of METH dependence compared to age- and gender-matched drug-free comparison subjects. HRV was assessed using time domain, frequency domain, and nonlinear entropic analyses in 17 previously METH-dependent and 21 drug-free comparison individuals during a 5 minute rest period. The METH-dependent group demonstrated significant reduction in HRV, reduced parasympathetic activity, and diminished heartbeat complexity relative to comparison participants. More recent METH use was associated with increased sympathetic tone. Chronic METH exposure may be associated with decreased HRV, impaired vagal function, and reduction in heart rate complexity as assessed by multiple methods of analysis. We discuss and review evidence that impaired HRV may be related to the cardiotoxic or neurotoxic effects of prolonged METH use.
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