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首页> 外文会议>Annual International Conference of the IEEE Engineering in Medicine and Biology Society >Monitoring cardiac function by accelerometer – detecting start systole from the acceleration signal makes additional ECG recordings for R-peak detection redundant
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Monitoring cardiac function by accelerometer – detecting start systole from the acceleration signal makes additional ECG recordings for R-peak detection redundant

机译：通过加速度计监视心脏功能–从加速度信号中检测起搏收缩使多余的ECG记录（用于R峰检测）变得多余

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A miniaturized accelerometer attached to the heart has been used for monitoring functional parameters such as early systolic velocity and displacement. Currently, processing of the accelerometer signal for derival of these functional parameters depends on determining start systole by detecting the ECG R-peaks. This study proposes an alternative method using only the accelerometer signal to detect start systole, making additional ECG recordings for this purpose redundant. A signal processing method for automatic detection of start systole by accelerometer alone was developed and compared with detected R-peaks in 15 pigs during 5 different interventions showing a difference of 30 ± 17 ms. Furthermore, the derived early systolic velocity and displacement using only accelerometer measurements correlated well (r2=0.91 and 0.82, respectively) with minor differences compared to the current method using ECG R-peaks as time reference. The results show that an accelerometer can be used to monitor cardiac function without the need to measure ECG which can simplify the monitoring system.
机译：附着在心脏上的小型加速度计已用于监测功能参数，例如早期的收缩速度和位移。当前，对用于这些功能参数的衍生的加速度计信号的处理取决于通过检测ECG R峰来确定起始收缩。这项研究提出了一种仅使用加速度计信号检测起搏收缩的替代方法，从而为此目的多余的ECG记录变得多余。开发了一种仅通过加速度计自动检测心脏收缩期的信号处理方法，并将其与15种猪在5种不同干预措施下检测到的R峰进行了比较，显示出30±17 ms的差异。此外，仅使用加速度计测量得出的早期收缩速度和位移相关性很好（r 2 分别为0.91和0.82），与使用ECG R峰作为时间参考的当前方法相比，存在细微差异。结果表明，加速度计可用于监测心脏功能，而无需测量ECG，这可以简化监测系统。

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