Results 61 to 70 of about 1,424,468 (388)
Frontiers in Physiology, 2020 Introduction: Heart Rate Variability (HRV) and Pulse Rate Variability (PRV), are non-invasive techniques for monitoring changes in the cardiac cycle. Both techniques have been used for assessing the autonomic activity.
E. Mejía-Mejía +4 more
semanticscholar +1 more source
Time Series Analysis using Embedding Dimension on Heart Rate Variability [PDF]
, 2018 Heart Rate Variability (HRV) is the measurement sequence with one or more visible variables of an underlying dynamic system, whose state changes with time. In practice, it is difficult to know what variables determine the actual dynamic system.
Abarbanel +14 more
core +2 more sources
Physiological Measurement, 2020 Heart rate variability has been largely used for the assessment of cardiac autonomic activity, due to the direct relationship between cardiac rhythm and the activity of the sympathetic and parasympathetic nervous system.
E. Mejía-Mejía +3 more
semanticscholar +1 more source
Determinants of short-period heart rate variability in the general population [PDF]
, 2001 Decreased heart rate variability (HRV) is associated with a worse prognosis in a variety of diseases and disorders. We evaluated the determinants of short-period HRV in a random sample of 149 middle-aged men and 137 women from the general population ...
Bolte, H.-D. +6 more
core +1 more source
Decreased Heart Rate Variability in COVID-19
Intensive Care Research, 2022 Purpose Coronavirus disease 2019 (COVID-19) is caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), which primarily infects the lower airways and binds to angiotensin-converting enzyme 2 (ACE2) on alveolar epithelial cells.
Chengfen Yin +4 more
doaj +1 more source
Impaired coronary blood flow at higher heart rates during atrial fibrillation: investigation via multiscale modelling [PDF]
, 2019 Background. Different mechanisms have been proposed to relate atrial fibrillation (AF) and coronary flow impairment, even in absence of relevant coronary artery disease (CAD). However, the underlying hemodynamics remains unclear.
Anselmino, Matteo +4 more
core +2 more sources
FEBS Letters, EarlyView.B cells sense external mechanical forces and convert them into biochemical signals through mechanotransduction. Understanding how malignant B cells respond to physical stimuli represents a groundbreaking area of research. This review examines the key mechano‐related molecules and pathways in B lymphocytes, highlights the most relevant techniques to ...
Marta Sampietro +2 more
wiley +1 more source
HEART RATE VARIABILITY IN HEMODIALYSIS PATIENTS
Український Журнал Нефрології та Діалізу, 2017 There are a small number of works that have studied heart rhythm variability parameters in patients treated with hemodialysis. Aim. To investigate the peculiarities of heart rhythm variability parameters in patients treated with hemodialysis ...
O. M. Loboda, I. O. Dudar, Y. I. Gonchar
doaj +1 more source
Heart Rate Variability in Newborns
Physiological Research, 2017 Heart rate (HR) and heart rate variability (HRV) in newborns is influenced by genetic determinants, gestational and postnatal age, and other variables. Premature infants have a reduced HRV. In neonatal HRV evaluated by spectral analysis, a dominant activity can be found in low frequency (LF) band (combined parasympathetic and sympathetic component ...
Mirko Zibolen +6 more
openaire +3 more sources
Circadian rhythm of heart rate and heart rate variability [PDF]
Archives of Disease in Childhood, 2000 Measurements of heart rate variability (HRV) are increasingly used as markers of cardiac autonomic activity.To examine circadian variation in heart rate and HRV in children.A total of 57 healthy infants and children, aged 2 months to 15 years, underwent ambulatory 24 hour Holter recording.
Krystel Maeyns +4 more
openaire +3 more sources