Key result
A proposed fractional operator-based digital ECG detector achieved high sensitivity (99.45% to 99.98%) and detection accuracy (99.43% to 99.96%) across different databases.
Why the study?
A low-power and high-performance digital ECG detector has become a basic requirement in modern implantable cardiac pacemakers.
A novel fractional operator-based digital ECG detector demonstrates high accuracy and low error rates for QRS complex detection, offering a potentially efficient solution for modern implantable pacemakers.
Answers are grounded in this paper and cite their sources.
May support fractional QRS detectors in devices; leaves open prospective clinical validation.
Summary A low power and high‐performance digital electrocardiogram (ECG) detector has become a basic requirement in modern implantable cardiac pacemakers. A fractional operator‐based digital ECG detector for modern pacemaker systems is proposed in this work. Instead of conventional thresholding, an adaptive slope prediction threshold is utilized for the detection of ECG peaks. A stochastic search‐based algorithm, namely, cuckoo search algorithm, is used to design an optimal fractional operator that is used for ECG denoising. It has been found that the proposed adaptive slope prediction threshold increases the QRS complex detection performance. A low detection error rate (DER) ranges from 0.01% to 0.56%, positive predictivity (P+) ranges from 99.32% to 99.98%, sensitivity (Se) ranges from 99.45% to 99.98%, and a detection accuracy (Acc) ranges from 99.43% to 99.96% for different databases are achieved for the proposed ECG detector, which is better compared with the existing ECG detectors. The proposed design of fractional order operator based on the lattice wave digital filter (LWDF) requires a minimum number of the multipliers for its structural realization.
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Kumar et al. (2019) studied ECG signal detection for implantable cardiac pacemakers. Fractional operator-based digital ECG detector with adaptive slope prediction threshold vs. Existing ECG detectors was evaluated on QRS complex detection performance (Detection error rate, positive predictivity, sensitivity, detection accuracy). A proposed fractional operator-based digital ECG detector achieved high sensitivity (99.45% to 99.98%) and detection accuracy (99.43% to 99.96%) across different databases.
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