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JoVE Encyclopedia of Experiments
Biology
兔癫痫异常的多系统监测:一种在诱导癫痫发作期间同时进行视频 EEG 、 ECG 、 二氧化碳图和血氧饱和度记...
兔癫痫异常的多系统监测:一种在诱导癫痫发作期间同时进行视频 EEG 、 ECG 、 二氧化碳图和血氧饱和度记...
Encyclopedia of Experiments
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Encyclopedia of Experiments Biology
Multisystem Monitoring of Epileptic Abnormalities in Rabbit: A Method for Simultaneous Video EEG, ECG, Capnography, and Oximetry Recording During Induced Seizures

兔癫痫异常的多系统监测:一种在诱导癫痫发作期间同时进行视频 EEG 、 ECG 、 二氧化碳图和血氧饱和度记录的方法

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03:24 min
July 8, 2025
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Transcript

在癫痫中,大脑中突然爆发的电活动会导致神经和心肺异常。这些异常包括癫痫发作 - 大脑中的异常电信号、心律失常 - 心律不齐和呼吸暂停 - 短暂的呼吸停止,可以通过多系统监测方法进行评估。

要在动物模型中进行多系统监测,请从具有预植入脑电图或脑电图和心电图或心电图电极的约束兔开始。脑电图和心电图电极分别有助于监测实时大脑活动和心律。接下来,在兔子的右耳上安装血氧仪,在兔子的鼻子和嘴巴上安装二氧化碳图仪,以记录呼吸参数。

剃

掉兔子左耳的后表面,以观察边缘耳静脉。用防腐剂擦拭耳朵,对表面进行消毒,扩张静脉。然后,将插管插入耳静脉并固定。将插管连接到含有癫痫发作诱导试剂的灌注系统。现在,将所需浓度的试剂注射到兔子的静脉中,让它进一步扩散到大脑中。

癫痫发作诱导分子与γ-氨基丁酸或GABA受体的拮抗剂调节位点结合,导致神经元长时间去极化。此后,定期增加剂量并仔细监测参数,以获得癫痫异常的视觉证据。

在记录脑电图-心电图对静脉给药的反应之前,剃掉兔耳的后表面,并使用70%乙醇对该部位进行消毒并扩张边缘耳静脉。用 25 号血管导管小心地插管边缘耳静脉,并在导管末端放置注射塞。将由三块卷起的纱布制成的夹板粘在耳朵上,以将导管固定到位,并使耳朵直立。每毫升肝素化盐水注射 1 毫升 10 USP 单位,以保持导管专利。

基线记录完成后,每 10 分钟将补充有 1 至 10 mg/kg 目标药物的生理盐水注入导管中一次。每次给药后,仔细监测视频-脑电图-心电图-二氧化碳图-血氧饱和度测定仪是否有任何神经心脏、电和呼吸异常,或癫痫样活动的视觉证据。实时以及在分析后记录这些变化。

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