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首页> 外文会议>2014 IEEE Conference on Biomedical Engineering and Sciences >Extracting features similar to QT interval from second derivatives of photoplethysmography: A feasibility study
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Extracting features similar to QT interval from second derivatives of photoplethysmography: A feasibility study

机译：从光电容积描记法的二阶导数中提取与QT间隔相似的特征：可行性研究

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Electrocardiography (ECG) is the most reliable tool to measure the heart electrical activity. It is noted that the setting and measurement procedure of ECG are always complex and time consuming. This complexity has motivated us to extract the important ECG features using photoplethysmography (PPG). The aim of this paper is to study the feasibility of extracting feature similar to ECG QT interval using second derivatives PPG (SDPPG). A pilot study has been conducted using simultaneous data acquisition system to acquire PPG and ECG signals. Five healthy subjects have been participated in this study. A signal processing algorithm has been developed to extract the feature that is similar to ECG QT interval. In this work, the feature refers to AB index, which is the interval of the SDPPG that has been illustrated in Figure 6. The paired T-test shows that there is no significant difference between QT interval using ECG and AB index extracted from second derivatives PPG (p<0.05).
机译：心电图（ECG）是测量心脏电活动的最可靠工具。注意，心电图的设置和测量过程总是很复杂且耗时。这种复杂性促使我们使用光电容积描记法（PPG）提取重要的ECG功能。本文的目的是研究使用二阶导数PPG（SDPPG）提取类似于ECG QT间隔的特征的可行性。已经使用同步数据采集系统进行了初步研究，以采集PPG和ECG信号。五个健康的受试者已经参与了这项研究。已经开发出一种信号处理算法来提取类似于ECG QT间隔的特征。在这项工作中，特征是指AB索引，即图6中所示的SDPPG的间隔。配对的T检验表明，使用ECG的QT间隔与从二阶导数中提取的AB索引之间没有显着差异。 PPG（p <0.05）。

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