Search results for: HRV

• Geotehnicki problemi projektiranja i ponasanja gradevnih jama

  Publication

  • G. Horodecki
  • A. Bolt
  • E. Dembicki

  - Year 2003

  Geotechniczne problemy projektowania i rezlizacji wykopów głębokich. Przykłady głębokich wykopów fundamentowych oraz ich wpływ na infrastrukturę i zabudowę sąsiednią. Analizy wyników pomiarów oraz obliczeń przemieszczeń obudowy. Wpływ odwodnienia wykopów budowlanych. Analiza głównych oddziaływań na zabudowę sąsiednią.

• Promising effects of xanthine oxidase inhibition by allopurinol on autonomic heart regulation estimated by heart rate variability (HRV) analysis in rats exposed to hypoxia and hyperoxia

  Publication

  • S. Zajączkowski
  • W. Ziółkowski
  • P. Badtke
  • M. Zajączkowski
  • D. Flis
  • A. Figarski
  • M. Smolińska-Bylańska
  • T. Wierzba

  - PLOS ONE - Year 2018

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• Hrvatske Vode

  Journals

  ISSN: 1330-1144

• Vjesnik Bibliotekara Hrvatske

  Journals

  ISSN: 0507-1925

• Anali Hrvatskog Politoloskog Drustva

  Journals

  ISSN: 1845-6707 , eISSN: 1847-5299

• Hrvatski Filmski Ljetopis

  Journals

  ISSN: 1330-7665

• Hrvatski Dijalektoloski Zbornik

  Journals

  ISSN: 0439-691X , eISSN: 2459-4849

• Radovi-Zavoda za Hrvatsku Povijest

  Journals

  ISSN: 0353-295X

• Portal-Godisnjak Hrvatskog Restauratorskog Zavoda

  Journals

  ISSN: 1847-9464 , eISSN: 1848-6681

• Godišnjak Akademije pravnih znanosti Hrvatske

  Journals

  ISSN: 1847-7615 , eISSN: 1849-0778

• Hrvatski Geografski Glasnik-Croatian Geographical Bulletin

  Journals

  ISSN: 1331-5854 , eISSN: 1848-6401

• Hrvatski Meteoroloski Casopis/Croatian Meteorological Journal

  Journals

  ISSN: 1330-0083

• Hrvatska revija za rehabilitacijska istrazivanja / Croatian Review of Rehabilitation Research

  Journals

  ISSN: 1331-3010

• Rasprave Instituta za hrvatski jezik i jezikoslovlje

  Journals

  ISSN: 1331-6745 , eISSN: 1849-0379

• Rad Hrvatske Akademije Znanosti i Umjetnosti-Matematicke Znanosti

  Journals

  ISSN: 1849-2215

• Croatica : časopis za hrvatski jezik, književnost i kulturu

  Journals

  ISSN: 1849-1111 , eISSN: 2623-9280

• Croatian Journal of Education-Hrvatski Casopis za Odgoj i obrazovanje

  Journals

  ISSN: 1848-5189 , eISSN: 1848-5197

• Narodna umjetnost. Hrvatski Casopis za etnologiju i folkloristiku / Croatian Journal of Ethnology and Folklore Research

  Journals

  ISSN: 0547-2504

• Alfa d.d. (Zagreb, Hrvatska)

  Publishing Houses

• Hrvatska akademija znanosti i umjetnosti

  Publishing Houses

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

  Publication

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

  - PLOS ONE - Year 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...

  Full text available to download

• Cross-talk Between the Heart and Arteries in Older 65+ Adults

  Publication

  • T. Wierzba
  • S. Zajączkowski
  • P. Figarski
  • R. Olek
  • A. Poliński

  - Year 2019

  Regulatory synchronization between the heart and the arterial walls is essential for optimal blood delivery to tissues. We investigated functional coherence between heart rhythm and aortic wall compliance in 30 volunteers aged 65 – 74. ECG and carotid and iliac pulse-wave were recorded and digitized at 2 kHz. Carotid-femoral pulse-wave transit time (cfTT) which reflex aortic compliance was assessed using the intersecting tangent...

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• Stress Detection of Children with Autism using Physiological Signals in Kaspar Robot-Based Intervention Studies

  Publication

  • B. Coskun
  • P. Uluer
  • E. Toprak
  • D. E. Barkana
  • H. Kose
  • T. Zorcec
  • B. Robins
  • A. Landowska

  - Year 2022

  This study aims to develop a stress detection system using the blood volume pulse (BVP) signals of children with Autism Spectrum Disorder (ASD) during robot-based interven- tion. This study presents the heart rate variability (HRV) analysis method to detect the stress, where HRV features are extracted from raw BVP signals recorded from an E4 wristband during interaction studies with the social robot Kaspar. Low frequency power...

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

  Publication

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

  - ENTROPY - Year 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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• Relationship between heart rate variability, blood pressure and arterial wall properties during air and oxygen breathing in healthy subjects

  Publication

  • B. Graff
  • A. Szyndler
  • K. Czechowicz
  • W. Kucharska
  • G. Graff
  • P. Boutouyrie
  • S. Laurent
  • K. Narkiewicz
  • K. Narkiewicz

  - AUTONOMIC NEUROSCIENCE-BASIC & CLINICAL - Year 2013

  Previous studies reported that normobaric hyperoxia influences heart rate, arterial pressure, cardiac output and systemic vascular resistance, but the mechanisms underlying these changes are still not fully understood. Several factors are considered including degeneration of endothelium-derived nitric oxide by reactive oxygen species, the impact of oxygen-free radicals on tissues and alterations of autonomic nervous system function....

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• The database of indices computed from RR-intervals of length 512 of 41 patients at rest hospitalized due to the episode of acute ischemic stroke

  Open Research Data

  open access

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

  This dataset contains the data that was a basis for the results discussed in the paper “Persistent homology as a new method of the assessment of heart rate variability” by Grzegorz Graff, Beata Graff, Paweł Pilarczyk, Grzegorz Jabłoński, Dariusz Gąsecki, Krzysztof Narkiewicz,  Plos One (2021), DOI: 10.1371/journal.pone.0253851.

• The database of indices computed from RR-intervals of length 512 of 46 healthy subjects at rest

  Open Research Data

  open access

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

  This dataset contains the data that was a basis for the results discussed in the paper “Persistent homology as a new method of the assessment of heart rate variability” by Grzegorz Graff, Beata Graff, Paweł Pilarczyk, Grzegorz Jabłoński, Dariusz Gąsecki, Krzysztof Narkiewicz,  Plos One (2021), DOI: 10.1371/journal.pone.0253851.

• Wpływ konfiguracji elektrod pomiarowych oraz parametrów pomiaru na EDR

  Publication

  • P. Przystup
  • A. Poliński
  • J. Wtorek

  - Year 2013

  W pracy przebadano wplyw wybranych konfiguracji elektrod na jakość uzyskiwanego sygnału EDR. Analizie poddane zostały również częstotliwość próbkowania sygnału EKG i rozdzielczość przetwornika AC/DC. Optymalną konfiguracją elektrod jest odprowadzenie kończynowe pierwsze. Minimalne parametry układu pomiarowego do uzyskania wysokiej jakości sygnału EDR, to częstotliwość probkowania 2,5kHz oraz 14-bitowy przetwornik AC-DC.

• Incidence of severe critical events in paediatric anaesthesia (APRICOT): a prospective multicentre observational study in 261 hospitals in Europe

  Publication

  • K. Virag
  • W. Klimscha
  • R. Konecny
  • R. Luntzer
  • U. Morawk-Wintersperger
  • F. Neiger
  • L. Rustemeyer
  • C. Breschan
  • D. Frey
  • M. Platzer... and 980 others

  - The Lancet Respiratory Medicine - Year 2017

  Full text to download in external service