We report a patient who has had persistent visual disturbances since she underwent catheter ablation to treat her Wolff-Parkinson-White (WPW) syndrome. We examined her visual symptoms carefully and quantitatively by means of our newly developed method combining image-processing and psychophysics. We first simulated the patient's visual symptoms using image-processing techniques. Since the simul...

a therapeutic option for patients with tachyarrhythmias mediated by an accessory atrioventricular pathway. The technique conventionally implies the introduction of several catheters into the heart for assessment of electrophysiological parameters as well as for localization of the accessory pathway and may last for several hours. Methods and Results. Thirty-four patients with Wolff-Parkinson-Wh...

introduction: white spot syndrome virus (wssv) is one of the most deadly infectious pathogens of the shrimp culture industry. neither effective vaccines nor efficient treatments are currently available for this disease. vibrio species are well known dominant bacterial pathogens in the shrimp ponds. as facultative pathogenic bacteria, it is possible that vibrio spp. along with wssv to co-infect ...

Laugier-Hunziker syndrome is a rare benign condition characterized by diffuse oral hyperpigmentation associated with pigmentation of the nails. The syndrome must be included in the differential diagnosis of diffuse oral pigmentation to exclude other conditions with systemic implications. We describe a 43-year-old white woman with the clinical and histological features of Laugier-Hunziker syndro...

The procedure of catheter ablation for the treatment of drug resistant atrial fibrillation (AF) has evolved but still relies on lesion sets intended to isolate areas of focal firing, mainly the myocardial sleeves of the pulmonary veins (PVs), from the rest of the atria. However the success rates for this procedure have varied inversely with the type of AF. At best success rates have been 20 to ...

Ebstein’s anomaly is a rare congenital heart disease in which the tricuspid valve is displaced toward the apex of the right ventricle (RV). It is commonly associated with atrial arrhythmia, especially Wolff-Parkinson-White syndrome. In fact, up to 20% of patients with Ebstein’s anomaly have 1 or more accessory pathways owing to tricuspid valve malformation, most of which are located along these...

a therapeutic option for patients with tachyarrhythmias mediated by an accessory atrioventricular pathway. The technique conventionally implies the introduction of several catheters into the heart for assessment of electrophysiological parameters as well as for localization of the accessory pathway and may last for several hours. Methods and Results. Thirty-four patients with Wolff-Parkinson-Wh...

A case of WPW Syndrome due to parahisian accessory pathway was ablated by the catheter inversion technique. The pathway could not be eliminated by direct femoral approach using repeated high radiofrequeny energy ablation. No pathway potential was seen in the aortic cusps. Instead, it was successfully ablated by curving the ablation catheter underneath the septal leaflet of the tricuspid valve t...

In the case presented by Drs. Tanaka-Esposito and Cantillon, a patient deemed to be at risk of developing unpredictable atrioventricular (AV) block based on electrophysiology findings and a catheter ablation procedure is chosen for the implantation of a leadless pacemaker that will provide permanent, prophylactic ventricular pacing. Briefly, this case involved a patient with a midseptal accesso...

The cost of definitive therapy was compared in 25 patients who underwent radiofrequency catheter ablation of accessory pathways in 1990 and 25 patients who underwent surgical ablation of accessory pathways in 1989. In the radiofrequency group, 23 of 25 patients had a single accessory pathway and the remaining 2 patients each had 2 accessory pathways. In the surgical group, 20 patients had a sin...