نتایج جستجو برای: ablation atrioventricular node
تعداد نتایج: 228777 فیلتر نتایج به سال:
AIMS The objective of this prospective study was to assess risk factors for the development of atrioventricular block following slow pathway modification in patients with atrioventricular nodal reentrant tachycardia and a pre-existing prolonged PR interval. METHODS AND RESULTS Of 346 consecutive patients with atrioventricular nodal reentrant tachycardia undergoing slow pathway modification, 1...
BACKGROUND Dexmedetomidine (DEX) is an alpha2-adrenergic agonist that is approved by the Food and Drug Administration for short-term (<24 h) sedation in adults. It is not approved for use in children. Nevertheless, the use of DEX for sedation and anesthesia in infants and children appears to be increasing. There are some concerns regarding the hemodynamic effects of the drug, including bradycar...
OBJECTIVES This study was designed to prospectively evaluate the effects of radiofrequency ablation in Wolff-Parkinson-White (WPW) syndrome by scintigraphic analysis. BACKGROUND The functional changes triggered by radiofrequency current ablation of atrioventricular accessory pathways are not fully known. METHODS Forty-four patients with WPW syndrome were consecutively investigated before an...
A 19-year-old female underwent repair of complex congenital heart disease (atrial and ventricular septal defect with a supero-inferior ventricular relationship) in infancy. Because of recurrent palpitations she underwent an electrophysiology study. Atypical atrioventricular nodal reentrant tachycardia was diagnosed. Catheter ablation was performed successfully using cryothermal energy. The diag...
cardiac conduction system enables the heart to pulsate continuously by producing electric impulse and conducting it. as the anatomical information about cardiac conduction system in human being and other mammals needed in various fields of sciences, such as anatomy, histology, physiology, pathology and cardiology, the present review article intends to provide this basic information about an imp...
Paroxysmal Permanent Junctional Reciprocating Tachycardia (PJRT) is caused after rapid and sudden pacing of excitatory foci in atrioventricular junction . While it happens mostly in infants and children, it is rarely seen in adults. A 30-year-old female came to our emergency department repeatedly with the chief complaint of palpitation. She was later diagnosed with PSVT and throughout her s...
BACKGROUND In patients with drug resistant incessant supraventricular tachycardia, radiofrequency induced ablation of the atrioventricular junction and pacemaker implantation have hitherto been considered a treatment of last resort. OBJECTIVE To assess the short and long term effects of ablation of the atrioventricular junction on systolic and diastolic left ventricular function in patients w...
BACKGROUND A specific local indicator in the Koch's triangle could be critical to the complication-free treatment of atrioventricular nodal reentrant tachycardia by transcatheter radiofrequency ablation. Recording of perinodal slow potential reflects a slow conduction area, and probably indicates the location of the slow pathway component of the circuit. Specific ablation of the slow pathway wo...
BACKGROUND The relationship of atrioventricular nodal reentrant tachycardia to congenital heart disease (CHD) and the outcome of catheter ablation in this population have not been studied adequately. METHODS AND RESULTS A multicenter retrospective study was performed on patients with CHD who had atrioventricular nodal reentrant tachycardia and were treated with catheter ablation. There were 1...
Sinus node dysfunction in patients after repair of the secundum atrial septal defect has been ascribed to surgical damage. We studied 15 consecutive patients with secundum atrial septal defect before operative intervention. Noninvasive testing included 34-hour electrocardiographic monitoring and a standard 13-lead ECG. Intracardiac electrophysiologic techniques included corrected sinus node rec...
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