Intra-Atrial Block
نویسندگان
چکیده
منابع مشابه
Adenosine can improve the intra-atrial conduction block along the mitral annulus during accessory pathway ablation.
A 10-year-old boy with a supraventricular tachycardia was referred for catheter ablation. An electrophysiologic study revealed a left lateral concealed accessory pathway (AP). A few radiofrequency (RF) applications targeting the AP resulted in an inadvertent intra-atrial conduction block at the mitral isthmus without any damage to the AP. Adenosine was then administered during left ventricular ...
متن کاملDemonstration of intra-atrial conduction delay, block, gap and reentry: a report of two cases.
REENTRY HAS BEEN FREQUENTLY proposed as a mechanism for a variety of cardiac arrhythmias. For certain types of arrhythmias, the role of reentry appears well established.1 10 While intra-atrial reentry has long been suspected as a mechanism of some form of atrial arrhythmias, the phenomena of interor intra-atrial reentry in man have rarely been documented.8 11 The inability to demonstrate intero...
متن کاملIntra-atrial conduction block mimicking atrioventricular nodal block after multiple catheter ablation procedures for atrial tachycardia in a patient with cardiomyopathy.
A 42-year-old woman with a history of cardiomyopathy and multiple ablation procedures for atrial tachycardia developed intra-atrial conduction block that mimicked atrioventricular (AV) nodal block during radiofrequency ablation at the cavotricuspid isthmus. She was treated with atrial pacing (from the coronary sinus), which overcame intra-atrial conduction block and resulted in AV nodal conduct...
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The mechanism of atrial flutter is controversial. A 76-year-old woman with rheumatic heart disease was referred to our clinic with an unusual rhythm disturbance which initially appeared to be classic atrial flutter at a rate of 300 beats/min. Later tracings, however, demonstrated a rate exactly one-half that of the earlier ECGs, with an identical p-wave morphology and vector. This latter rhythm...
متن کاملSelf-heating in Short Intra-block Wires
近年,熱問題が主要な設計問題となってきている.エレク トロマイグレーション [1,2]などに代表される信頼性低下 要因やリーク電流は温度に強く依存し,温度上昇による リーク電力増大は発熱量をさらに増加させるためである. この問題を解決するために,チップ全体の熱解析やアー キテクチャレベル [3]から物理設計レベル [4]の熱指向設 計が産学界双方で注目されている. 微視的視点では.グローバル配線の自己発熱問題が集中 的に研究されてきた [5–11].配線抵抗によるエネルギー 消費が配線内部に熱を発生させ,それが温度上昇に繋が る現象が自己発熱効果である.配線の過熱により,(1)配 線の電気抵抗の増大による信号伝達速度の低下,(2)エレ クトロマイグレーションなどによる信頼性低下,が生じ る.グローバル配線での自己発熱問題は以下の理由によ り集中的に研究されてきた: (1)グローバル配...
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ژورنال
عنوان ژورنال: Circulation
سال: 1956
ISSN: 0009-7322,1524-4539
DOI: 10.1161/01.cir.14.6.1073