Respiratory sinus arrhythmia in conscious humans during spontaneous respiration

Larsen, Peter; Tzeng, Yu‐Chieh; Šín, Peter; Galletly, D. C.

doi:10.1016/j.resp.2010.04.021

Cited by 125 publications

(102 citation statements)

References 54 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The 5 first minutes allowed the participant to shift in a quiet state and the ECG data for HRV baseline computation was recorded during the 5 following minutes. ECG data was recorded during spontaneous breathing (Denver, Reed, & Porges, 2007;Kobayashi, 2009;Kowalewski & Urban, 2004;Larsen, Tzeng, Sin, & Galletly, 2010;Muhtadie et al, 2015;Pinna et al, 2007).…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Resting high frequency heart rate variability selectively predicts cooperative behavior

Beffara

Bret

Vermeulen

et al. 2016

Physiology & Behavior

View full text Add to dashboard Cite

Section: Accepted Manuscriptmentioning

confidence: 99%

Resting high frequency heart rate variability selectively predicts cooperative behavior

Beffara

Bret

Vermeulen

et al. 2016

Physiology & Behavior

View full text Add to dashboard Cite

“…Leadspecific respiration effects or other types of noises can also have an effect. Respiration may influence QTV through APD modulation in ventricular myocytes [86], in particular during respiratory sinus arrhythmia [87] and by measurement artefacts in single ECG leads due to cardiac axis rotation, which can be compensated for by using careful methodological designs where the rotation angles introduced by respiration are taken into account [51]. Ventricular repolarization is also modulated by e.g.…”

Section: ) Qt Adaptation To Hr Changesmentioning

confidence: 99%

Techniques for Ventricular Repolarization Instability Assessment From the ECG

2016

View full text Add to dashboard Cite

Abstract-Instabilities in ventricular repolarization have been documented to be tightly linked to arrhythmia vulnerability. Translation of the information contained in the repolarization phase of the ECG into valuable clinical decision-making tools remains challenging. This work aims at providing an overview of the last advances in the proposal and quantification of ECG-derived indices that describe repolarization properties and whose alterations are related with threatening arrhythmogenic conditions. A review of the state-of-the-art is provided, spanning from the electrophysiological basis of ventricular repolarization to its characterization on the surface ECG through a set of temporal and spatial risk markers.Index Terms-Electrophysiological basis of the ECG, ECG waves, ECG intervals, repolarization instabilities, spatial and temporal ventricular repolarization dispersion, cardiac arrhythmias, biophysical modeling of the ECG, ECG signal processing, repolarization risk markers, T wave alternans, QT variability.

show abstract

“…Recordings were performed during spontaneous breathing [21][22][23][24][25]. Respiratory rate was monitored every 5 min.…”

Section: Speckle Tracking Echocardiographymentioning

confidence: 99%

Left ventricular adaptation to high altitude: speckle tracking echocardiography in lowlanders, healthy highlanders and highlanders with chronic mountain sickness

Dedobbeleer

Hadefi

Pichon

et al. 2015

Int J Cardiovasc Imaging

View full text Add to dashboard Cite

Hypoxic exposure depresses myocardial contractility in vitro, but has been associated with indices of increased cardiac performance in intact animals and in humans, possibly related to sympathetic nervous system activation. We explored left ventricular (LV) function using speckle tracking echocardiography and sympathetic tone by spectral analysis of heart rate variability (HRV) in recently acclimatized lowlanders versus adapted or maladapted highlanders at high altitude. Twenty-six recently acclimatized lowlanders, 14 healthy highlanders and 12 highlanders with chronic mountain sickness (CMS) were studied. Control measurements at sea level were also obtained in the lowlanders. Altitude exposure in the lowlanders was associated with slightly increased blood pressure, decreased LV volumes and decreased longitudinal strain with a trend to increased prevalence of post-systolic shortening (p = 0.06), whereas the low frequency/high frequency (LF/HF) ratio increased (1.62 ± 0.81 vs. 5.08 ± 4.13, p < 0.05) indicating sympathetic activation. Highlanders had a similarly raised LF/HF ratio, but no alteration in LV deformation. Highlanders with CMS had no change in LV deformation, no significant increase in LF/HF, but decreased global HRV still suggestive of increased sympathetic tone, and lower mitral E/A ratio compared to healthy highlanders. Short-term altitude exposure in lowlanders alters indices of LV systolic function and increases sympathetic nervous system tone. Life-long altitude exposure in highlanders is associated with similar sympathetic hyperactivity, but preserved parameters of LV function, whereas diastolic function may be altered in those with CMS. Altered LV systolic function in recently acclimatized lowlanders may be explained by combined effects of hypoxia and changes in loading conditions.

show abstract

Respiratory sinus arrhythmia in conscious humans during spontaneous respiration

Cited by 125 publications

References 54 publications

Resting high frequency heart rate variability selectively predicts cooperative behavior

Resting high frequency heart rate variability selectively predicts cooperative behavior

Techniques for Ventricular Repolarization Instability Assessment From the ECG

Left ventricular adaptation to high altitude: speckle tracking echocardiography in lowlanders, healthy highlanders and highlanders with chronic mountain sickness

Contact Info

Product

Resources

About