A 45 year old white man developed transient abnormal Q waves and ST segment elevation preceding left anterior fascicular block during exercise stress testing. The simultaneous disappearance of Q waves and fascicular block suggested that the abnormal Q waves were determined by an early septal conduction defect.

Holographic gratings in photorefractive crystals that are based on charge redistribution inevitably decay as a result of ionic and electronic conduction. Under certain and restricted conditions these decay times can be acceptably long. Relevant decay rates and transient hologram field expressions are derived with special reference to LiNbO(3). Some experimental data are presented.

The increased incidence of arrhythmia in the healing phase after infarction has been linked to remodeling in the epicardial border zone (EBZ). Ionic models of normal zone (NZ) and EBZ myocytes were incorporated into one-dimensional models of propagation to gain mechanistic insights into how ion channel remodeling affects action potential (AP) duration (APD) and refractoriness, vulnerability to ...

Biomonitoring studies have indicated that humans are routinely exposed to bisphenol A (BPA), a chemical that is commonly used in the production of polycarbonate plastics and epoxy resins. Epidemiological studies have shown that BPA exposure in humans is associated with cardiovascular disease; however, the direct effects of BPA on cardiac physiology are largely unknown. Previously, we have shown...

The condensation of matter from a corona to a cool, optically thick inner disk is investigated for black hole X-ray transient systems in the low hard state. A description of a simple model for the exchange of energy and mass between corona and disk originating from thermal conduction is presented, taking into account the effect of Compton cooling of the corona by photons from the underlying dis...

Paroxysmal atrioventricular (AV) block is an unusual phenomenon that has been previously described. We report the case of a 78-year-old man who presented after an episode of syncope while seated in church. On presentation to the hospital, the initial electrocardiogram showed sinus rhythm with a normal PR interval, QRS duration, and corrected QT interval. During telemetry monitoring, several epi...

We present a case of 75-year-old male who underwent percutaneous coronary intervention in the setting acute myocardial infarction with ST-segment elevation and was hospitalized 12 days afterwards COVID-19 pneumonia. Later patient presented himself again syndrome same region due to in-stent thrombosis. Transient atrioventricular conduction disorders were registered before after intervention. Pos...

A transient hot-wire apparatus was used to measure the thermal conductivity of argon with both steady-state and transient methods. The effects of wire diameter, eccentricity of the wire in the cavity, axial conduction, and natural convection were accounted for in the analysis of the steady-state measurements. Based on measurements on argon, the relative uncertainty at the 95 % level of confiden...

The present article mainly focuses on the transient thermal dispersal within a moving plate using non-Fourier heat flux model. Furthermore, innovative, sophisticated artificial neural network strategy with Levenberg-Marquardt backpropagated scheme (ANNS-LMBS) is proposed for determining temperature in convective-radiative plate. Using dimensionless terms, energy model exchange simplified into n...

Cardiac contusion is a well-recognized complication of blunt chest trauma. Various conduction system disorders have been reported in association with this condition, the most common being right bundle branch block. Complete heart block (CHB) is seen rarely. Most cases of CHB are transient. We present the case of an 80-year-old woman who developed CHB and asystole following blunt cardiac trauma....