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330 results for “Heart rate variability”
Heart Rate Variability Biofeedback: It's Role in Asthma Therapeutics
ClinicalTrials.gov study NCT02766374. IPD Sharing: Not stated. Countries: 1. Publications: 1.
Data from: Development and validation of warning system of ventricular tachyarrhythmia in patients with heart failure with heart rate variability data
Implantable-cardioverter defibrillators (ICD) detect and terminate life-threatening ventricular tachyarrhythmia with electric shocks after they occur. This puts patients at risk if they are driving or in a situation where they can fall. ICD's shocks are also very painful and affect a patient's quality of life. It would be ideal if ICDs can accurately predict the occurrence of ventricular tachyarrhythmia and then issue a warning or provide preventive therapy. Our study explores the use of ICD data to automatically predict ventricular arrhythmia using heart rate variability (HRV). A 5 minute and a 10 second warning system are both developed and compared. The participants for this study consist of 788 patients who were enrolled in the ICD arm of the Sudden Cardiac Death – Heart Failure Trial (SCD-HeFT). Two groups of patient rhythms, regular heart rhythms and pre-ventricular-tachyarrhythmic rhythms, are analyzed and different HRV features are extracted. Machine learning algorithms, including random forests (RF) and support vector machines (SVM), are trained on these features to classify the two groups of rhythms in a subset of the data comprising the training set. These algorithms are then used to classify rhythms in a separate test set. This performance is quantified by the area under the curve (AUC) of the ROC curve. Both RF and SVM methods achieve a mean AUC of 0.81 for 5-minute prediction and mean AUC of 0.87-0.88 for 10-second prediction; an AUC over 0.8 typically warrants further clinical investigation. Our work shows that moderate classification accuracy can be achieved to predict ventricular tachyarrhythmia with machine learning algorithms using HRV features from ICD data. These results provide a realistic view of the practical challenges facing implementation of machine learning algorithms to predict ventricular tachyarrhythmia using HRV data, motivating continued research on improved algorithms and additional features with higher predictive power.
Heart rate variability as a prognostic marker in critically ill patients
<p>Master Data Sheet</p>
The Predictive Value of Heart Rate Variability for the Prognosis of Patients With Mild to Moderate Traumatic Brain Injury
ClinicalTrials.gov study NCT07024381. IPD Sharing: UNDECIDED. Countries: 1. Publications: 1.
Heart Rate Variability in Febrile Young Infants
ClinicalTrials.gov study NCT04103151. IPD Sharing: NO. Countries: 1. Publications: 2.
HEART Rate Variability Biofeedback in LOng COVID-19 (HEARTLOC)
ClinicalTrials.gov study NCT05228665. IPD Sharing: YES. Countries: 1. Publications: 2.
Effect of Interscalene Block on Heart Rate Variability (HRV)
ClinicalTrials.gov study NCT01185457. IPD Sharing: Not stated. Countries: 1. Publications: 6.
The Efficacy and Safety of Low-Level Tragus Stimulation on Heart Rate Variability, Neutrophil-Lymphocyte Ratio, and Major Adverse Cardiovascular Events in Patients With ST-Segment Elevation Myocardial
ClinicalTrials.gov study NCT06537583. IPD Sharing: NO. Countries: 1. Publications: 2.
Preoperative Heart Rate Variability and Baroreflex Sensitivity in ASO Patients During Various Sleep Stages
ClinicalTrials.gov study NCT00712946. IPD Sharing: Not stated. Countries: 1. Publications: 3.
Examination of the Pathophysiologic Mechanisms of CRPS by Using QST, CPM, RIC, and Heart Rate Variability QST
ClinicalTrials.gov study NCT02261012. IPD Sharing: Not stated. Countries: 1. Publications: 1.
A Heart Rate Variability (HRV) Biofeedback Training in Functional Gastrointestinal Disorders (FGID)
ClinicalTrials.gov study NCT06687057. IPD Sharing: UNDECIDED. Countries: 1. Publications: 3.
Fetal Heart Rate Variability and Fetal Growth Restriction
ClinicalTrials.gov study NCT04288037. IPD Sharing: NO. Countries: 1. Publications: 1.
Heart Rate Variability and Electroencephalography Analysis in Laparoscopic Surgery With or Without Transversus Abdominis Plane Block
ClinicalTrials.gov study NCT04539080. IPD Sharing: NO. Countries: 1. Publications: 1.
Effectiveness of Information Technology-Assisted Horticultural Therapy Program on Heart Rate Variability, Stress, Depression and Happiness Among Older Adults Resident in Long-Term Care Facilities
ClinicalTrials.gov study NCT06797804. IPD Sharing: NO. Countries: 1. Publications: 25.
Heart Rate Variability During Auricular Acupressure at Zero Point on the Left Ear in Healthy Volunteers
ClinicalTrials.gov study NCT05586698. IPD Sharing: YES. Countries: 1. Publications: 1.
Heart Rate Variability Change After Liver Transplantation
ClinicalTrials.gov study NCT00778687. IPD Sharing: Not stated. Countries: 1. Publications: 1.
Potential Correlation Between Heart Rate Variability With Cardiovascular Risk at Different Stages of Metabolic Syndrome
ClinicalTrials.gov study NCT06305195. IPD Sharing: NO. Countries: 1. Publications: 3.
Preoperative Measurement of Heart Rate Variability as a Predictor of Postoperative Outcome
ClinicalTrials.gov study NCT02375412. IPD Sharing: NO. Countries: 1. Publications: 3.
Heart Rate Variability and Postoperative Pain
ClinicalTrials.gov study NCT00438035. IPD Sharing: Not stated. Countries: 1. Publications: 2.
Heart Rate Variability, Physical Activity and Exhaustion in the Inpatient Treatment of Stress-Related Disorders
ClinicalTrials.gov study NCT05874856. IPD Sharing: UNDECIDED. Countries: 1. Publications: 1.
ScienceDex guides
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These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.