Journal ArticleDOI
A Real-Time QRS Detection Algorithm
Jiapu Pan,Willis J. Tompkins +1 more
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TLDR
A real-time algorithm that reliably recognizes QRS complexes based upon digital analyses of slope, amplitude, and width of ECG signals and automatically adjusts thresholds and parameters periodically to adapt to such ECG changes as QRS morphology and heart rate.Abstract:
We have developed a real-time algorithm for detection of the QRS complexes of ECG signals. It reliably recognizes QRS complexes based upon digital analyses of slope, amplitude, and width. A special digital bandpass filter reduces false detections caused by the various types of interference present in ECG signals. This filtering permits use of low thresholds, thereby increasing detection sensitivity. The algorithm automatically adjusts thresholds and parameters periodically to adapt to such ECG changes as QRS morphology and heart rate. For the standard 24 h MIT/BIH arrhythmia database, this algorithm correctly detects 99.3 percent of the QRS complexes.read more
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Continuous inference of psychological stress from sensory measurements collected in the natural environment
Kurt Plarre,Andrew Raij,Syed Monowar Hossain,Amin Ahsan Ali,Motohiro Nakajima,Mustafa al'Absi,Emre Ertin,Thomas W. Kamarck,Santosh Kumar,Marcia S. Scott,Daniel P. Siewiorek,Asim Smailagic,Lorentz E. Wittmers +12 more
TL;DR: This paper proposes, train, and test two models for continuous prediction of stress from physiological measurements captured by unobtrusive, wearable sensors, and proposes a perceived stress model to predict perception of stress.
Journal ArticleDOI
Machine Learning and Decision Support in Critical Care
Alistair E. W. Johnson,Mohammad M. Ghassemi,Shamim Nemati,Katherine E. Niehaus,David A. Clifton,Gari D. Clifford +5 more
TL;DR: A range of applications addressing the collection and preprocessing of critical care data are covered, including the modernization of static acuity scoring; online patient tracking; personalized prediction and risk assessment; artifact detection; state estimation; and incorporation of multimodal data sources such as genomic and free text data.
Journal ArticleDOI
An assessment of algorithms to estimate respiratory rate from the electrocardiogram and photoplethysmogram
Peter Charlton,Timothy Bonnici,Timothy Bonnici,Lionel Tarassenko,David A. Clifton,Richard Beale,Peter J. Watkinson +6 more
TL;DR: The primary aim was to determine how closely algorithms agreed with a gold standard RR measure when operating under ideal conditions, and to provide a toolbox of algorithms and data to allow future researchers to conduct reproducible comparisons of algorithms.
Journal ArticleDOI
A real-time QRS detection method based on moving-averaging incorporating with wavelet denoising.
TL;DR: A simple moving average-based computing method for real-time QRS detection is proposed that incorporates a wavelet-based denoising procedure to effectively reduce the noise level for electrocardiogram (ECG) data.
Journal ArticleDOI
Non-contact heart rate and heart rate variability measurements: A review
TL;DR: A comparative review of the two conventional methods, electrocardiogram (ECG) and photoplethysmography (PPG), and the novel methods of non-contact measuring of HR with capacitively coupled ECG, Doppler radar, optical vibrocardiography, thermal imaging, RGB camera and HR from speech.
References
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Journal ArticleDOI
Software QRS detection in ambulatory monitoring--a review.
Olle Pahlm,Leif Sörnmo +1 more
TL;DR: This review asserts that most one-channel QRS detectors described in the literature can be considered as having the same basic structure and a discussion of some of the current detection schemes is presented.
Journal ArticleDOI
Optimal QRS detector.
TL;DR: The problem of detecting the QRS complex in the presence of noise was analysed and an optimised threshold criterion based on FP/FN was developed.
Journal ArticleDOI
Automated High-Speed Analysis of Holter Tapes with Microcomputers
TL;DR: An automated Holtes scanning system based on two microcomputers that detects QRS complexes and measures the QRS durations using computations of first and second derivatives, and can process Holter tapes at 60 times real time and produce printed summaries and 24 h trend plots.
Journal ArticleDOI
Online digital filters for biological signals: some fast designs for a small computer.
TL;DR: The possibilities for extending the class of lowpass recursive digital filters to include high pass, bandpass, and bandstop filters are described, and experience with a PDP 11 computer has shown that these filters may be programmed simply using machine code, and that online operation at sampling rates up to about 8 kHz is possible.
Journal ArticleDOI
A robust-digital QRS-detection algorithm for arrhythmia monitoring
Adriaan Ligtenberg,Murat Kunt +1 more
TL;DR: In this paper a new robust single lead QRS-detection algorithm is presented, allowing real-time applications and results are presented.