Wyniki wyszukiwania dla: heart rate variability

• Partitioning total heart rate variability

  Publikacja

  • P. Guzik
  • J. Piskorski
  • T. Krauze
  • A. Wykretowicz
  • H. Wysocki

  - International Journal of Cardiology - Rok 2010

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• Ordinal pattern statistics for the assessment of heart rate variability

  Publikacja

  • G. Graff
  • B. Graff
  • A. Kaczkowska
  • D. Makowiec
  • J. Amigó
  • J. Piskorski
  • P. Guzik

  - The European Physical Journal-Special Topics - Rok 2013

  The recognition of all main features of a healthy heart rhythm (the so-called sinus rhythm) is still one of the biggest challenges in contemporary cardiology. Recently the interesting physiological phenomenon of heart rate asymmetry has been observed. This phenomenon is related to unbalanced contributions of heart rate decelerations and accelerations to heart rate variability. In this paper we apply methods based on the concept...

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• Heart rate variability and functional outcome in ischemic stroke

  Publikacja

  • B. Graff
  • D. Gąsecki
  • A. Rojek
  • P. Boutouyrie
  • W. Nyka
  • S. Laurent
  • K. Narkiewicz

  - JOURNAL OF HYPERTENSION - Rok 2013

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• Persistent homology as a new method of the assessment of heart rate variability

  Publikacja

  • G. Graff
  • B. Graff
  • P. Pilarczyk
  • G. Jabłoński
  • D. Gąsecki
  • K. Narkiewicz

  - PLOS ONE - Rok 2021

  Heart rate variability (hrv) is a physiological phenomenon of the variation in the length of the time interval between consecutive heartbeats. In many cases it could be an indicator of the development of pathological states. The classical approach to the analysis of hrv includes time domain methods and frequency domain methods. However, attempts are still being made to define new and more effective hrv assessment tools. Persistent...

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• Disentangling respiratory sinus arrhythmia in heart rate variability records

  Publikacja

  • Ç. Topçu
  • M. Frühwirth
  • M. Moser
  • M. Rosenblum
  • A. Pikovsky
  • C. Topcu

  - Physiological Measurement - Rok 2018

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• Entropy measures of heart rate variability for short ECG datasets in patients with congestive heart failure

  Publikacja

  • B. Graff
  • G. Graff
  • A. Kaczkowska

  - Acta Physica Polonica B Proceedings Supplement - Rok 2012

  We investigated the usefulness of entropy measures calculated for short ECG series in distinguishing healthy subjects from patients with congestive heart failure (CHF). Four entropy measures were tested: Approximate Entropy (ApEn), Sample Entropy (SampEn), Fuzzy Entropy (FuzzyEn) and Permutation Entropy (PE), each computed for ECG series of 1000, 500, 250 and 100 RR intervals. We found that with a reduction of the data set length...

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• Entropy Measures of heart rate variability for short ECG datasets in patients with congestive heart failure

  Publikacja

  • B. Graff
  • A. Kaczkowska
  • G. Graff

  - Acta Physica Polonica B Proceedings Supplement - Rok 2012

  We investigated the usefulness of entropy measures calculated for short ECG series in distinguishing healthy subjects from patients with congestive heart failure (CHF). Four entropy measures were tested: Approximate Entropy (ApEn), Sample Entropy (SampEn), Fuzzy Entropy (Fuzzy En) and Permutation Entropy (PE), each computed for ECG series of 1000, 500, 250 and 100 RR intervals. We found that with a reduction of the data set length...

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• Entropy Measures in the Assessment of Heart Rate Variability in Patients with Cardiodepressive Vasovagal Syncope

  Publikacja

  • B. Graff
  • G. Graff
  • D. Makowiec
  • A. Kaczkowska
  • D. Wejer
  • S. Budrejko
  • D. Kozłowski
  • K. Narkiewicz

  - ENTROPY - Rok 2015

  Sample entropy (SampEn) was reported to be useful in the assessment of the complexity of heart rate dynamics. Permutation entropy (PermEn) is a new measure based on the concept of order and was previously shown to be accurate for short, non-stationary datasets. The aim of the present study is to assess if SampEn and PermEn obtained from baseline recordings might differentiate patients with various outcomes of the head-up tilt test...

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• Heart Rate Asymmetry, Its Compensation, and Heart Rate Variability in Healthy Adults during 48-h Holter ECG Recordings

  Publikacja

  • G. Sibrecht
  • J. Piskorski
  • T. Krauze
  • P. Guzik

  - Journal of Clinical Medicine - Rok 2023

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• Yoga for Heart Rate Variability: A Systematic Review and Meta-analysis of Randomized Clinical Trials

  Publikacja

  • P. Posadzki
  • A. Kuzdzal
  • M. Lee
  • E. Ernst

  - APPLIED PSYCHOPHYSIOLOGY AND BIOFEEDBACK - Rok 2015

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