The mechanisms of supraventricular tachycardia were investigated in 35 children. Intracardiac electrograms including His bundle potentials were recorded. Atrial pacing and single premature atrial stimuli were performed in the right atrium. Tachycardia was observed and the mechanism elucidated in 33 patients. The atrial activation sequence during tachycardia, including high right atrium, low lat...

Aim . To assess the structure and performance of left atrium (LA) before after 3 cycles anticancer treatment in lymphoma patients, as well incidences supraventricular arrhythmia (SVA) levels biomarkers inflammation. Material Methods This is a prospective observational study patients with confirmed diagnosis [n=23; 57% men; median age 52 (34;64) years], who had no prior polychemotherapy. The com...

This case report of a rare condition involving situs inversus partialis, wandering spleen, and single atrium. Situs partialis is congenital developmental defect in which the abdominal or thoracic organs are reversed to opposite side body across sagittal plane. The highlights anomaly diagnostic management complexities associated with this condition. patient has survived age 24, despite presence ...

BACKGROUND Single-ring isolation of the posterior left atrium is feasible, but the incidence and mechanisms of postprocedural arrhythmias have not been described in detail. METHODS AND RESULTS The first 100 consecutive patients (58.8+/-11.2 years old, 80 male) who underwent single-ring isolation for atrial fibrillation (66 intermittent, 18 persistent, 16 long-standing persistent) were followe...

Mitral atresia and occlusive left atrial thrombus Sir, I have been studying the Case Report on page 649 of the September I969 issue of the British Heart Journal. I would like to suggest a completely different interpretation of the anatomy. I think that the fundamental lesion may be a single atrium with atrioventricular communis, and that the 'left atrium' is actually a common pulmonary vein whi...

Background Left atrial (LA) remodeling develops as a result of longstanding pressure overload. However, determinants and clinical outcome of excessive remodeling, so called giant left atrium (GLA), are not clear. Methods Clinical characteristics of patients with GLA (antero-posterior diameter higher than 65 mm), including echo-Doppler parameters, and follow-up clinical outcomes from a tertiar...

decreased cardiac responsiveness to adrenergic stimulation has been observed in cholestatic liver disease, but the cause remains unclear. previous reports have suggested that nitric oxide overproduction might have a role in cholestasis-induced bradycardia via inhibition of l-type calcium channels. in the present study, the digoxin has been used to increase cardiac ca2+ transient in male sprague...