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Central venous pressure as a method of optimising atrio-ventricular delay after cardiac surgery.
PLoS One
January 2025
National Heart and Lung Institute, Imperial College London, London, United Kingdom.
Introduction: Haemodynamic atrioventricular delay (AVD) optimisation has primarily focussed on signals that are not easy to acquire from a pacing system itself, such as invasive left ventricular catheterisation or arterial blood pressure (ABP). In this study, standard clinical central venous pressure (CVP) signals are tested as a potential alternative.
Methods: Sixteen patients with a temporary pacemaker after cardiac surgery were studied.
Speed is associated with polarization during subjective evaluation: no tradeoff, but an effect of the ease of processing.
Cogn Neurodyn
December 2024
Graduate School of Systems Life Sciences, Kyushu University, Fukuoka, Japan.
In human perceptual decision-making, the speed-accuracy tradeoff establishes a causal link between urgency and reduced accuracy. Less is known about how speed relates to the subjective evaluation of visual images. Here, we conducted a set of four experiments to tease apart two alternative hypotheses for the relation between speed and subjective evaluation.
View Article and Find Full Text PDFNeural network-based arterial diameter estimation from ultrasound data.
PLOS Digit Health
December 2024
Department of Health Research, imec The Netherlands / Holst Centre, Eindhoven, The Netherlands.
Cardiovascular diseases are the leading cause of mortality and early assessment of carotid artery abnormalities with ultrasound is key for effective prevention. Obtaining the carotid diameter waveform is essential for hemodynamic parameter extraction. However, since it is not a trivial task to automate, compact computational models are needed to operate reliably in view of physiological variability.
View Article and Find Full Text PDFInadvertent higher rate atrial pacing after dual chamber pacemaker implantation - What is the underlying mechanism?
Indian Pacing Electrophysiol J
November 2024
Department of Cardiology, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, 226014, Uttar Pradesh, India. Electronic address:
Unexplained change in parameters, despite good lead positions or odd ECG patterns following implant should lead to suspicion of lead swap, amongst other possibilities. An easy way to confirm this is by paying careful attention to device EGMs and recording the ECG by switching off one channel, and pacing single channel (in either AAI or VVI mode).
View Article and Find Full Text PDFRationale: Induced pluripotent stem cell-derived cardiomyocytes (iPSC-CMs) are an emerging model for determining drug effects and modeling disease. Specialized devices can generate Extracellular Field Potential (EFP) measurements from these cells, analogous to the ventricular complex of the electrocardiogram.
Objective: The objective of this study was to develop an easy-to-use, easy-to-teach, reproducible software tool to measure EFPs.
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