Beat-to-beat variability in the tricuspid annulus dimensions and dynamics is markedly increased in atrial fibrillation
Sign Up to like & getrecommendations! Published in 2020 at "European Heart Journal"
DOI: 10.1093/ehjci/ehaa946.0026
Abstract: Atrial fibrillation (Afib) leads to beat-to-beat variability in cycle length; however, whether there is associated beat-to-beat variability in the tricuspid annulus (TA) dimensions or variability in the time in cardiac cycle when TA reaches maximal… read more here.
Keywords: maximal area; range; variability; beat beat ... See more keywords
CKD patients have augmented beat-to-beat BP variability that is not improved with 12 weeks of cycling exercise
Sign Up to like & getrecommendations! Published in 2023 at "Physiology"
DOI: 10.1152/physiol.2023.38.s1.5729394
Abstract: Increased blood pressure (BP) variability is a powerful predictor of cardiovascular events and end-organ damage and is associated with sympathetic overactivity. Given the heightened cardiovascular (CV) risk in patients with chronic kidney disease (CKD), we… read more here.
Keywords: beat variability; beat beat; variability; physiology ... See more keywords
Autonomic Modulation in Patients with Heart Failure Increases Beat-to-Beat Variability of Ventricular Action Potential Duration
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DOI: 10.3389/fphys.2017.00328
Abstract: Background: Exaggerated beat-to-beat variability of ventricular action potential duration (APD) is linked to arrhythmogenesis. Sympathetic stimulation has been shown to increase QT interval variability, but its effect on ventricular APD in humans has not been… read more here.
Keywords: beat beat; beat variability; heart failure; variability ... See more keywords
Mechanisms Underlying Interactions Between Low-Frequency Oscillations and Beat-to-Beat Variability of Celullar Ventricular Repolarization in Response to Sympathetic Stimulation: Implications for Arrhythmogenesis
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DOI: 10.3389/fphys.2019.00916
Abstract: Background and Objectives: Enhanced beat-to-beat variability of ventricular repolarization (BVR) has been linked to arrhythmias and sudden cardiac death. Recent experimental studies on human left ventricular epicardial electrograms have shown that BVR closely interacts with… read more here.
Keywords: response; response sympathetic; beat beat; beat variability ... See more keywords
Short-Term Beat-to-Beat QT Variability Appears Influenced More Strongly by Recording Quality Than by Beat-to-Beat RR Variability
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DOI: 10.3389/fphys.2022.863873
Abstract: Increases in beat-to-beat variability of electrocardiographic QT interval duration have repeatedly been associated with increased risk of cardiovascular events and complications. The measurements of QT variability are frequently normalized for the underlying RR interval variability.… read more here.
Keywords: beat variability; noise; quality; interval variability ... See more keywords