Electrical Connections Between Pulmonary Veins in Humans
نویسندگان
چکیده
منابع مشابه
Electrical connections between pulmonary veins in humans: evidence after radiofrequency ablation of the venoatrial junction.
A47-year-old man with an uncorrected ostium primum atrial septal defect complained of frequent episodes of paroxysmal atrial fibrillation since 1990. Class IC and III antiarrhythmic drugs failed to control the recurrences, and the patient was referred to our institution for electrophysiological evaluation. During the procedure, the focal origin of the atrial fibrillation episodes from the right...
متن کاملElectrical connections between pulmonary veins: implication for ostial ablation of pulmonary veins in patients with paroxysmal atrial fibrillation.
BACKGROUND Electrical disconnection of the myocardial extensions into arrhythmogenic pulmonary veins (PVs) is recognized as a curative technique for paroxysmal atrial fibrillation (AF). However, the presence of electrical connections between the PVs, which may make achievement of PV disconnection difficult, has not been systematically evaluated. METHODS AND RESULTS Forty-nine consecutive pati...
متن کاملCorrelation between anatomy and electrical activation in canine pulmonary veins.
BACKGROUND The roles of complex muscle sleeve geometry and fiber orientation in the pulmonary veins (PVs) in wave-front propagation are poorly understood. METHODS AND RESULTS We mapped the left superior PV (LSPV, n=7) and left inferior PV (LIPV, n=4) of dogs with 420 bipolar electrodes (1-mm resolution) and performed detailed histological examination. In the anterior LSPV-left atrial (LA) jun...
متن کاملElectrical impulse conduction in pulmonary veins.
It has been documented that the cardiac musculature of many mammalia, including man, extends from the heart along the pulmonary veins to the lungs, and, at least in some rodentia, as far as the small venules, and that smooth muscle is not present (1-3). However, these reports are of structural studies only, and in the one publication where a speculation is made concerning the spread of the cont...
متن کاملElectrical conduction in canine pulmonary veins: electrophysiological and anatomic correlation.
BACKGROUND Paroxysmal atrial fibrillation in patients is often initiated by foci in the pulmonary veins. The mechanism of these initiating arrhythmias is unknown. The aim of this study was to determine electrophysiological characteristics of canine pulmonary veins that may predispose to initiating arrhythmias. METHODS AND RESULTS Extracellular recordings were obtained from the luminal side of...
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ژورنال
عنوان ژورنال: Circulation
سال: 2001
ISSN: 0009-7322,1524-4539
DOI: 10.1161/hc3201.094105