Results 31 to 40 of about 7,583,001 (301)

Heart Rate Variability [PDF]

open access: yesHypertension, 2014
See related article, pp 1334–1343 In this issue of Hypertension , Monfredi et al1 address a phenomenon that has been repeatedly described in the literature2–5 but, nevertheless, went largely unnoticed by the scientific community using heart rate variability (HRV) to assess cardiac autonomic control or to predict cardiovascular health.
openaire   +2 more sources

Heart Rate Variability and Coronary Artery Bypass Grafting: A Systematic Review

open access: yesReviews in Cardiovascular Medicine
Background: Coronary artery bypass grafting (CABG) is a well-established surgical procedure used to treat significant coronary artery disease. Nevertheless, unfavorable cardiovascular events and complications, including cardiac arrhythmias may be ...
Patrycja S. Matusik   +7 more
doaj   +1 more source

Aging effect on cardiac sympathovagal activity in healthy males over seven decades using short-term heart rate variability analysis

open access: yesNational Journal of Physiology, Pharmacy and Pharmacology, 2022
Background: The autonomic nervous system (ANS), which governs practically all bodily processes, alters structurally and functionally as we age. Heart rate variability (HRV) studies are non-invasive, quantitative approaches to investigate the effects of ...
Smilee Johncy S, Sunitha M
doaj   +1 more source

Influence of transrectal and transabdominal ultrasound examination on salivary cortisol, heart rate, and heart rate variability in mares [PDF]

open access: yes, 2015
Pregnancy diagnostics in equine reproduction are routinely performed using transrectal ultrasonography, although it is also possible to visualize the fetus by transabdominal ultrasound examinations from the 90th day of gestation onward.
Sieme, Harald   +8 more
core   +1 more source

Heart rate and heart rate variability in infants during olfactory stimulation

open access: yesAnnals of Human Biology, 2019
Background: Various plant odours have been shown to decrease heart rate and increase parasympathetic nervous activity. However, ‘innate’ autonomic responses without the influences of experience, assumptions and prejudices of odours remains unclear.
Yuko Tsunetsugu, Keita Ishibashi
doaj   +1 more source

Interaction between Heart Rate and Heart Rate Variability [PDF]

open access: yesAnnals of Noninvasive Electrocardiology, 2014
Heart rate variability (HRV) is significantly associated with average heart rate (HR), therefore, HRV actually provides information on two quantities, that is, on HR and its variability. It is difficult to conclude which of these two plays a principal role in the HRV clinical value, or in other words, what is the HR contribution to the clinical ...
openaire   +2 more sources

Impact of Heart Rate Fragmentation on the Assessment of Heart Rate Variability

open access: yesApplied Sciences, 2020
Heart rate fragmentation (HRF) is a type of sinoatrial instability characterized by frequent (often every beat) appearance of inflection in the R-R interval time series, despite the electrocardiograms appearing to be sinus rhythm.
Junichiro Hayano   +3 more
doaj   +1 more source

Case study: Monitoring the effectiveness of aromatherapeutic breathing with heart rate variability biofeedback

open access: yesHeart and Mind, 2021
Heart rate variability (HRV) can be used as an objective measure of mental health and workplace stress. Workplace stress is associated with poor performance and organizations desire optimal performance from employees.
Adrian Low, Stella Chan
doaj   +1 more source

HEART RATE VARIABILITY IN HEMODIALYSIS PATIENTS

open access: yesУкраїнський 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 Insulo-Opercular Epilepsy

open access: yesBrain Sciences, 2021
Background: We aimed to evaluate heart rate variability (HRV) changes in insulo-opercular epilepsy (IOE) and after insulo-opercular surgery. Methods: We analyzed 5-min resting HRV of IOE patients before and after surgery. Patients’ SUDEP-7 risk inventory
Thi Phuoc Yen Tran   +8 more
doaj   +1 more source

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