NEJM:心脏起搏器或除颤器植入患者接受MRI检查是安全的

2017-12-28 zhangfan MedSci原创

研究认为,对于植入传统起搏器或除颤器的患者,磁共振检查是安全的,未发生长期临床显著性不良事件

由于安全性问题,大多数安装了起搏器或除颤器的患者不能接受核磁共振成像(MRI)检查。近日研究人员开展一项前瞻性、非随机研究,考察1.5T磁场强度条件下起搏器或除颤器患者的MRI检查安全性。

1509名患者参与研究,其中58%安装了起搏器。42%安装除颤器。所有仪器均不符合FDA磁共振成像条件的要求。患者接受了2103次临床需要的胸或非胸腔MRI检查。研究结果评估包括不良事件和设备功能参数变量变化,以及设备与周围组织的相互作用。

研究中未发生长期的临床显著性不良事件。9名患者(0.4%; 95% CI, 0.2-0.7)出现设备备份模式复位,其中8人为暂时性的;1名起搏器电池寿命不足1个月的患者因复位导致难以恢复的心室抑制型起搏,进行了设备更换。MRI后设备立即出现的为P波振幅降低,发生率约1%。长期随访中,最常见的设备问题为P波振幅降低(4%);心房起搏阈值增加(4%);右心室起搏阈值增加(4%);左心室起搏阈值增加(3%)。所有设备问题均无显著的临床意义,无需设备更换或程序重调。

研究认为,对于植入传统起搏器或除颤器的患者,磁共振检查是安全的,未发生长期临床显著性不良事件。

原始出处:

Saman Nazarian et al. Safety of Magnetic Resonance Imaging in Patients with Cardiac Devices. N Engl J Med. December 28 2017.

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    2017-12-30 HNYYM
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    2017-12-30 zhouqu_8
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    2017-12-30 jiyangfei
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    2017-12-28 yfjms

    学习

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