Method Fourteen consecutive patients with long term and short term persistent atrial fibrillation were the basis of this report. On full cardiopulmonary bypass, radiofrequency clamps were applied to the epicardial left atrial tissue surrounding the right and left pulmonary veins, separately. The left atrial appendage was amputated on the arrested heart. Via that defect, an epicardial to endocar...

We describe the clinicopathological features of a case of total anomalous pulmonary vein drainage (TAPVD) associated with atresia of the common pulmonary vein (ACPV). A male Japanese infant born at 37 weeks of gestation demonstrated apnea and severe respiratory acidosis immediately after delivery. The patient died of hypoxemic respiratory failure 6 days after birth despite the initiation of art...

In three newborn infants with infradiaphragmatic total anomalous pulmonary venous connection, the common pulmonary vein was visualized with two-dimensional echocardiography and validated with saline contrast injections. The transducer was placed in the subcostal region in a sagittal body plane so as to image the descending aorta and the vertebral column. The common pulmonary vein, which connect...

A trial fibrillation (AF) is a potential adverse effect of intravenous administration of adenosine. Although the mechanism is not known, this phenomenon is thought to be mediated by adenosine's effects on shortening atrial action potential duration and refractoriness. Because ade-nosine has little effect on atrial conduction velocity, the net effect of adenosine, therefore, is to shorten the wa...

Pulmonary vein stenosis is recognised as a rare, silent cause of pulmonary hypertension. ' The condition can occur with or without intracardiac anomalies. '3 The presence of lesions, such as ventricular septal defect, which cause pulmonary hypertension in their own right, can make suspicion of associated pulmonary venous obstruction difficult. In only one of the four reported cases4-7 of ventri...

A2-year-old cachectic cross-breed gelding was admitted toVeterinary Teaching Hospital of University of Tehran followingthe onset of a marked respiratory distress, coughing and ventraledema. Clinical examinations indicated harsh respiratory andexpiratory sounds as well as jugular vein distention. Therespiratory and heart rates were 35/min and 60 bpm, respectively.Agrade III/IV pansystolic murmur...

BACKGROUND The right-to-left shunt at the atrial level is responsible for arterial hypoxemia in patients with atrial septal defect. OBJECTIVES This study investigated the mechanism of arterial hypoxemia in patients with atrial septal defect by measuring the P(O2) in both the right and left upper pulmonary veins. SUBJECTS AND METHOD We prospectively measured the P(O2) in the femoral artery a...

BACKGROUND The risk of pulmonary vein narrowing (PVN) after pulmonary vein isolation, using a novel multi-electrode ablation catheter, is unknown. METHODS AND RESULTS Left atrial volume and PV diameters were compared by computed tomography (CT) before and 3 months after pulmonary vein isolation using duty-cycled phased radio frequency energy (2:1 or 4:1 bipolar/unipolar ratio) in 50 patients....