Entrainment of randomly coupled oscillator networks by a pacemaker [PDF]
, 2004 Entrainment by a pacemaker, representing an element with a higher frequency, is numerically investigated for several classes of random networks which consist of identical phase oscillators. We find that the entrainment frequency window of a network decreases exponentially with its depth, defined as the mean forward distance of the elements from the ...
A. N. Zaikin +9 more
arxiv +6 more sources
Delay-induced multiple stochastic resonances on scale-free neuronal networks [PDF]
Chaos 19 (2009) 023112, 2009 We study the effects of periodic subthreshold pacemaker activity and time-delayed coupling on stochastic resonance over scale-free neuronal networks. As the two extreme options, we introduce the pacemaker respectively to the neuron with the highest degree and to one of the neurons with the lowest degree within the network, but we also consider the case
Guanrong Chen +6 more
arxiv +3 more sources
Self-organized stable pacemakers near the onset of birhythmicity [PDF]
, 2000 General amplitude equations for reaction-diffusion systems near to the soft onset of birhythmicity described by a supercritical pitchfork-Hopf bifurcation are derived. Using these equations and applying singular perturbation theory, we show that stable autonomous pacemakers represent a generic kind of spatiotemporal patterns in such systems.
A. B. Rovinsky +29 more
arxiv +3 more sources
Reentrant transition in coupled noisy oscillators [PDF]
Physical Review E 91, 012901 (2015), 2015 We report on a novel type of instability observed in a noisy oscillator unidirectionally coupled to a pacemaker. Using a phase oscillator model, we find that, as the coupling strength is increased, the noisy oscillator lags behind the pacemaker more frequently and the phase slip rate increases, which may not be observed in averaged phase models such as
Kobayashi, Yasuaki, Kori, Hiroshi
arxiv +5 more sources
Genetically engineered cardiac pacemaker: stem cells transfected with HCN2 gene and myocytes - a model [PDF]
arXiv, 2005 Artificial biological pacemakers were developed and tested in canine ventricles. Next steps will require obtaining oscillations sensitive to external regulations, and robust with respect to long term drifts of expression levels of pacemaker currents and gap junctions. We introduce mathematical models intended to be used in parallel with the experiments.
Kanani, Sandra +2 more
arxiv +2 more sources
Strains of a virtuoso: pacemaker infection and ventricular tachycardia in a violinist. [PDF]
BMC Cardiovasc DisordPurpose Pacemaker-related infections are serious complications of cardiac implantable electronic devices (CIEDs). This case report aims to describe the occurrence of pacemaker pocket infection and recurrent ventricular tachycardia (VT) in a Chinese ...
Chen Y, Zhang H, Qiao Q, Ma L.
europepmc +2 more sources
Diagnostic value of implantable loop recorders in patients with unexplained syncope or palpitations
Annals of Noninvasive Electrocardiology, 2021 Background The implantable loop recorder (ILR) is a small cardiac rhythm‐monitoring device. Our aim was to determine ILR diagnostic value in patients with unexplained syncope, presyncope, or palpitations suggesting cardiac arrhythmias.
Nikola N. Radovanović +9 more
doaj +1 more source
Approach to the treatment of atrial fibrillation in patients with cardiovascular risk profile: Multicentric international study [PDF]
Srpski Arhiv za Celokupno Lekarstvo, 2015 Introduction. Atrial fibrillation (AF), the most common arrhythmia that requires treatment, does not come out of the focus of researchers. Monitoring its prevalence and effects of therapy is a good guideline approach to the growing population of
Pavlović Siniša U. +7 more
doaj +1 more source
Transvenous lead placement and its pre-sternal tunneling to the contralateral side as a solution for pacemaker system upgrade in case of the subclavian vein thrombosis [PDF]
Srpski Arhiv za Celokupno Lekarstvo, 2017 Introduction. Chronic right ventricular pacing can deteriorate cardiac function. Consequently, pacemaker system upgrades are more frequently indicated. These interventions can be hindered by venous thrombosis.
Radovanović Nikola N. +6 more
doaj +1 more source
Pneumothorax as a complication of cardiac rhythm management devices implantation [PDF]
Srpski Arhiv za Celokupno Lekarstvo, 2017 Introduction/Objective. Pneumothorax is one of the most common complications of cardiac rhythm management (CRM) devices implantation. We aimed to assess the incidence of pneumothorax after implantation of these devices and to determine risk factors for ...
Radovanović Nikola N. +8 more
doaj +1 more source