A5110932754- ECG Monitoring and Analysis
- Heart Rate Variability and Autonomic Control
- Cardiac electrophysiology and arrhythmias
- Non-Invasive Vital Sign Monitoring
- EEG and Brain-Computer Interfaces
- Healthcare Technology and Patient Monitoring
- Time Series Analysis and Forecasting
- Phonocardiography and Auscultation Techniques
- Fault Detection and Control Systems
- Blind Source Separation Techniques
- Sepsis Diagnosis and Treatment
- Electronic Health Records Systems
- Obstructive Sleep Apnea Research
- Hemodynamic Monitoring and Therapy
- Blood Pressure and Hypertension Studies
- Machine Learning in Healthcare
- Complex Systems and Time Series Analysis
- Artificial Intelligence in Healthcare
- Atrial Fibrillation Management and Outcomes
- Cardiovascular Syncope and Autonomic Disorders
- Data Quality and Management
- Analog and Mixed-Signal Circuit Design
- Fractal and DNA sequence analysis
- Electrochemical sensors and biosensors
- Leadership and Management in Organizations
Harvard–MIT Division of Health Sciences and Technology
2005-2022
Massachusetts Institute of Technology
2005-2022
Institute for Medical Research
2015
Beth Israel Deaconess Medical Center
2000-2012
University of Oxford
2011
Johnson Research & Development (United States)
2003
Harvard University
2000-2003
Beth Israel Deaconess Hospital
2002-2003
Universidad de Zaragoza
2002
Boston University
1997-2000
The newly inaugurated Research Resource for Complex Physiologic Signals, which was created under the auspices of National Center Resources Institutes Health, is intended to stimulate current research and new investigations in study cardiovascular other complex biomedical signals. resource has 3 interdependent components. PhysioBank a large growing archive well-characterized digital recordings physiological signals related data use by community. It currently includes databases multiparameter...
The MIT-BIH Arrhythmia Database was the first generally available set of standard test material for evaluation arrhythmia detectors, and it has been used that purpose as well basic research into cardiac dynamics at about 500 sites worldwide since 1980. It lived a far longer life than any its creators ever expected. Together with American Heart Association Database, played an interesting role in stimulating manufacturers analyzers to compete on basis objectively measurable performance, much...
Objective: We sought to develop an intensive care unit research database applying automated techniques aggregate high-resolution diagnostic and therapeutic data from a large, diverse population of adult patients. This freely available is intended support epidemiologic in critical medicine serve as resource evaluate new clinical decision monitoring algorithms. Design: Data collection retrospective analysis. Setting: All units (medical unit, surgical cardiac surgery recovery unit) at tertiary...
Presents a QT database designed for evaluation of algorithms that detect waveform boundaries in the ECG. The consists 105 fifteen-minute excerpts two-channel ECG Holter recordings, chosen to include broad variety QRS and ST-T morphologies. Waveform subset beats these recordings have been manually determined by expert annotators using an interactive graphic display view both signals simultaneously insert annotations. Examples each morphology were included this annotated beats; at least 30...
Fourier analysis of heart rate (HR) may be used to characterize overall HR variability as well low- and high-frequency components attributable sympathetic vagal influences, respectively. We analyzed spectral characteristics 12 healthy young (18-35 years) 10 old (71-94 subjects before during 60 degrees head-up tilt. Total power in the 0.01-0.40-Hz frequency range low-frequency (0.06-0.10 Hz) (0.15-0.40 spectrum were significantly lower than supine upright positions. To compare subjects, we...
Background Despite much recent interest in quantification of heart rate variability (HRV), the prognostic value conventional measures HRV and newer indices based on nonlinear dynamics is not universally accepted. Methods Results We have designed algorithms for analyzing ambulatory ECG recordings measuring without human intervention, using robust methods obtaining time-domain (mean SD rate), frequency-domain (power bands 0.001 to 0.01 Hz [VLF], 0.15 [LF], 0.5 [HF] total spectral power [TP]...
The project for the development of European ST-T annotated Database originated from a 'Concerted Action' on Ambulatory Monitoring, set up by Community in 1985. goal was to prototype an ECG database assessing quality ambulatory monitoring (AECG) systems. After 'concerted action', full coordinated Institute Clinical Physiology National Research Council (CNR) Pisa and Thoraxcenter Erasmus University Rotterdam. Thirteen research groups eight countries provided AECG tapes beat selected 2-channel...
Abstract Background Text-based patient medical records are a vital resource in research. In order to preserve confidentiality, however, the U.S. Health Insurance Portability and Accountability Act (HIPAA) requires that protected health information (PHI) be removed from before they can disseminated. Manual de-identification of large record databases is prohibitively expensive, time-consuming prone error, necessitating automatic methods for large-scale, automated de-identification. Methods We...
The WaveForm DataBase (WFDB) Toolbox for MATLAB/Octave enables integrated access to PhysioNet's software and databases. Using the WFDB MATLAB/Octave, users have over 50 physiological databases in PhysioNet. toolbox provides 4 TB of biomedical signals including ECG, EEG, EMG, PLETH. Additionally, most are accompanied by metadata such as medical annotations clinical events: arrhythmias, sleep stages, seizures, hypotensive episodes, etc. Users this should easily be able reproduce, validate,...
Despite the important advances achieved in field of adult electrocardiography signal processing, analysis non-invasive fetal electrocardiogram (NI-FECG) remains a challenge. Currently no gold standard database exists which provides labelled FECG QRS complexes (and other morphological parameters), and publications rely either on proprietary databases or very limited set data recorded from few (or more often, just one) individuals.The PhysioNet/Computing Cardiology Challenge 2013 enables to...
Free access to a signals archive and signal processing/analysis software library fosters online collaboration. This article aims introduce PhysioNet as resource the biomedical research community. After capsule summary of its history goals, we discuss what offers researchers, describe some technology needed support these functions, conclude with observations gleaned from PhysioNet's first year service.
A compact-disk ROM containing the Massachusetts Institute of Technology (MIT)-Boston's Beth Israel Hospital (BIH) Arrhythmia Database as well a large number supplementary recordings assembled for various research projects was produced. In all, CD-ROM contains approximately 600 megabytes digitized electrocardiograms (ECG) recordings, most with beat-by-beat annotations, having total duration in excess 200 hours. The format makes this substantial collection ECGs accessible to researchers PCs...
Sleep apnea is a sleep disorder with high prevalence in the adult male population. regarded as an independent risk factor for cardiovascular sequelae such ischemic heart attacks and stroke. The diagnosis of requires polysomnographic studies laboratories expensive equipment attending personnel. can be treated effectively using nasal ventilation therapy (nCPAP). Early recognition selection patients related breathing disorders important task. Although it has been suggested that this done on...
In this paper, we present an effective algorithm for detecting the onset of arterial blood pressure (ABP) pulses. The employs a windowed and weighted slope sum function (SSF) to extract ABP waveform features. Adaptive thresholding search strategies are applied SSF signal detect pulses determine their onsets. Two evaluation procedures were employed. First, pulse detection accuracy was evaluated by comparing algorithm's detections with reference ECG annotations using MIT-BIH Polysomnographic...
This work studies the frequency behavior of a least-square method to estimate power spectral density unevenly sampled signals. When uneven sampling can be modeled as uniform plus stationary random deviation, this spectrum results in periodic repetition original continuous time at mean Nyquist frequency, with low-pass effect affecting upper bands that depends on dispersion. If dispersion is small compared period, estimation base band unbiased practically no by deterministic sinusoidal...
We have developed a polysomnographic database on CD‐ROM. The data were obtained from 16 subjects with sleep apnea syndrome. physiological signals include electroencephalogram, electromyogram, electrooculogram, invasive blood pressure, respiratory wave, oxygen saturation, and cardiac volume as measured by VEST method. CD‐ROM also programs to analyze polysomnography (PSG) data. has values: (i) for researchers investigating clinical physiology or non‐linear dynamics during syndrome; (ii)...
Development and evaluation of automated decision support systems requires large amounts well-characterized, reproducible test data. The MIMIC (Multi-parameter Intelligent Monitoring for Intensive Care) Database is intended to meet these needs. database, currently nearing completion, will include 100 patient records, each typically containing between 24 48 hours continuous data recorded from monitors in the medical, surgical, cardiac intensive care units Boston's Beth Israel Hospital. Each...
This paper presents a novel algorithm to detect onset and duration of QRS complexes. After low-pass filtering, the ECG signal is converted curve length by transform in which nonlinear scaling factor introduced enhance complex suppress unwanted noise. Adaptive thresholds are applied determine complex. The was evaluated with complete set single channel ECGs (signal O) from MIT-BlH Arrhythmia Database, achieved gross sensitivity 99.65% positive predictive accuracy 99.77%. determination very...
Related ArticleThis is a corrected version. See correction statement in: http://medinform.jmir.org/2015/1/e6/