Cardiac resynchronization therapy (CRT) is electrical resynchronization of the ventricles. Bachmann's bundle (BB) pacing is considered to be electrical resynchronization of the atria. Atrial fibrillation (AF) and congestive heart failure (HF) often coexist in the same patient. A 69 year-old man who underwent CRT combined with BB pacing for HF and atrial tachycardias or atrial fibrillation (AF) ...

Atrial fibrillation (AF) is the most commonly diagnosed supraventricular tachyarrhythmia in dogs. It typically develops when atrial enlargement occurs secondary to underlying cardiovascular disease. Electrocardiographically, AF is characterized by disorganized atrial electrical activity resulting in an absence of P waves and a rapid, irregular ventricular rate. The hemodynamic consequences of A...

The paper describes an integrated calculation methodology which, by simulating railway traffic, allows analysis of the performance of 2x25 kV 50 Hz electric traction systems. This methodology performs a multiconductor electrical analysis of the traction circuit utilising ATP-EMTP software (Alternative Transient Program-Electromagnetic Transient Program) and therefore additionally allows calcula...

A 41 year old woman with type 2 diabetes, hypertension, and hyperlipidaemia but no known heart disease received 130 DC shocks for repeated cardiac arrests due to ventricular tachyarrhythmias over 48 hours. She was stabilised by intravenous amiodarone and had a defibrillator implanted. Serial ECGs did not change, but raised troponin I confirmed myocardial infarction as the underlying cause. Elec...

A treatment regime using electrical stimulation in association with a variety of surgical procedures has improved the prognosis in congenital pseudarthrosis of the tibia--one of the most challenging of all orthopaedic disorders. The technique consists of correction of the tibial deformity, intramedullary fixation and cancellous bone grafting, augmented by electrical stimulation using an implant...

A quantitative physical model has been expressed in terms of features generic to electrical ageing. This has been used to simulate the evolution of damage structures during the electrical ageing of insulating polymers. During the main part of the ageing process isolated regions of damage were produced at a few extremely susceptible sites. However failure occurred via an accelerating filamentary...

Electric behavior of biological cells is driven by ion transport through the membrane induced by specific proteins. The cable model classically describes the membrane potential dynamics by analogy with an electrical circuit. We show the failure of this description when the various ion species get different diffusion times. The pertinent parameter which describes the membrane electrical stabilit...

The growing interest to the use of power generating complexes based on renewable energy sources has been witnessed recently. It necessitates need improve no-failure operation such complexes. highest failure rate is typical for string inverter in grid-connected PV systems. induces supply termination electrical grid. paper explores an approach process distribution by a system grid driven micro in...

I prepared a position paper on “Weather and Climate Engineering” for a workshop on “Perturbed Clouds in the Climate System” organized by the Frankfurt Institute for Advanced Studies (FIAS) held in Frankfurt, Germany in March 2008. The position paper will eventually be a chapter in a book. I think it is appropriate to share with the weather modification community the main points of this position...