Sudden change in R-wave amplitude. Is it a device malfunction?

Alcaldeó.; VilluendasR.; PereferrerD.; BayesA.

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Sudden change in R-wave amplitude. Is it a device malfunction?

机译：R波振幅突然变化。是设备故障吗？

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An 85-year-old man with chronic ischemic heart disease, carrying a single-chamber im-plantable cardioverter deflbrillator (ICD; Lumax ?, Biotronik, Berlin, Germany) was scheduled for surgical electrode inspection and deflbrillation test due to a sudden decrease in the sense R-wave amplitude. The ICD was implanted for secondary prophylaxis due to symptomatic ventricular tachycardia (VT) in 2004. During follow-up, several episodes of VT occurred that required direct current (DC) shocks. Hence, antiarrhythmic drug therapy with sotalol was started and the patient remained asymptomatic and free of VT recurrences.

机译：一名85岁的患有慢性缺血性心脏病的男子，由于单剂量可植入式心脏复律除颤器（ICD; Lumax？，Biotronik，德国柏林）的携带，被安排进行手术电极检查和除颤测试。感测R波幅度。 ICD在2004年因症状性室性心动过速（VT）而植入，用于继发预防。在随访期间，发生了几次VT，需要直流电（DC）电击。因此，开始使用索他洛尔进行抗心律失常药物治疗，患者无症状，无VT复发。

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《PACE: Pacing and clinical electrophysiology》 |2013年第2期|共4页
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Alcaldeó.; VilluendasR.; PereferrerD.; BayesA.;
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机译：R波振幅突然变化。是设备故障吗？
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机译：左束支传导阻滞无症状男性冠状动脉疾病（CaD）运动诱发R波幅度变化分析

Sudden change in R-wave amplitude. Is it a device malfunction?

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