Lakkireddy Dhanunjaya, Khasnis Atul, Antenacci Jennifer, Ryshcon Kay, Chung Mina K, Wallick Donald, Kowalewski William, Patel Dimpi, Mlcochova Hanka, Kondur Ashok, Vacek James, Martin David, Natale Andrea, Tchou Patrick
Mid America Cardiology at the University of Kansas Hospital, Kansas City, KS, USA.
Europace. 2007 Jul;9(7):551-6. doi: 10.1093/europace/eum058. Epub 2007 May 9.
High voltage electric current can adversely affect pacemakers (PM) and implantable cardioverter-defibrillator (ICD). The standard shock from an electrical stun gun (TASER- X26, TASER International, Scottsdale, AZ) consists of a 5-s long application of high voltage, low current pulses at 19 pulses per second. Its effect on the functional integrity of PM and ICDs is unknown.
We tested the functional integrity of nine PMs and seven ICDs in a swine model after a standard stun gun shock. A transvenous, dual coil, bi-polar ICD lead (St Jude-SP01) and a PM lead were placed in the right ventricular (RV) apex and connected to pulse generators buried in the pre-pectoral pocket. The two darts were placed at the sternal notch (SN) and apex of the heart bracketing the device pocket. Standard neuromuscular incapacitating (NMI) discharges were delivered. Functional parameters of the devices and leads were checked before and after the shocks. The mean pacing thresholds, sensing thresholds, pacing impedances, and defibrillation coil impedances of the ICD lead were similar before and after the shocks. Similarly, pacing thresholds, sensing thresholds, and impedances of the PM lead were not significantly different before and after the shocks. No significant change was noted in battery voltage and projected longevity. Implantable cardioverter-defibrillator generators detected the NMI impulses at a mean cycle length of 176 +/- 20 ms with detection to charge time of 5.9 +/- 1.5 s. Shock delivery was aborted in all tests as tachycardia detection abruptly terminated at the end of the 5 s NMI application. None of the devices exhibited power on reset (POR), elective replacement indicator (ERI), or noise mode behaviour after the shock.
Pacemakers and ICD generators and leads functions were not affected by the tested standard 5 s stun gun shocks.
高压电流会对起搏器（PM）和植入式心脏复律除颤器（ICD）产生不利影响。电击枪（泰瑟X26，泰瑟国际公司，亚利桑那州斯科茨代尔）的标准电击由每秒19次的5秒长的高压、低电流脉冲组成。其对PM和ICD功能完整性的影响尚不清楚。
我们在猪模型中对9个PM和7个ICD进行标准电击枪电击后测试其功能完整性。将一根经静脉、双线圈、双极ICD导线（圣犹达-SP01）和一根PM导线置于右心室（RV）心尖，并连接至埋于胸前口袋的脉冲发生器。将两支镖置于胸骨切迹（SN）和心脏心尖处以包围设备口袋。进行标准的神经肌肉失能（NMI）放电。在电击前后检查设备和导线的功能参数。ICD导线的平均起搏阈值、感知阈值、起搏阻抗和除颤线圈阻抗在电击前后相似。同样，PM导线的起搏阈值、感知阈值和阻抗在电击前后无显著差异。电池电压和预计使用寿命未发现显著变化。植入式心脏复律除颤器发生器以平均周期长度176±20毫秒检测到NMI脉冲，检测到充电时间为5.9±1.5秒。在所有测试中，由于在5秒NMI应用结束时心动过速检测突然终止，电击输送中止。电击后，所有设备均未表现出上电复位（POR）、择期更换指示（ERI）或噪声模式行为。
起搏器、ICD发生器和导线功能不受测试的标准5秒电击枪电击的影响。
