A three-axis accelerometer sensor is incorporated in a leadless pacemaker (Micra^TM, Medtronic^Inc) for rate adaptation. Three sensor setpoints at lower rate (LR), activity of daily living rate (ADLR), and upper rate (UR) are used to convert detected acceleration to a desired rate response. We describe inappropriate rate acceleration at rest and during chest physiotherapy in a sedentary elderly patient with leadless pacemaker. The underlying mechanism and various programming options are discussed.

中文翻译：

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由于自动速率曲线优化，无引线起搏器中的速率响应不适当

三轴加速度计传感器集成在无引线起搏器（Micra ^TM，Medtronic ^Inc）中以适应速率。较低速率 (LR)、日常生活活动速率 (ADLR) 和较高速率 (UR) 的三个传感器设定点用于将检测到的加速度转换为所需的速率响应。我们描述了一位使用无引线起搏器的久坐老年患者在休息时和胸部物理治疗期间不适当的心率加速。讨论了底层机制和各种编程选项。