An Incessant Tachycardia: What Is the Mechanism?
نویسندگان
چکیده
منابع مشابه
What is the tachycardia mechanism? - III.
A 66-year-old woman with a 24-year history of paroxysmal supraventricular tachycardia underwent an electrophysiologic procedure. The baseline sinus cycle length, atrial-His (AH), and Hisventricular (HV) intervals were 8(X). 70, and 40 msec, respectively. Programmed stimulation with a single atrial extrastimulus did not demonstrate dual AV nodal physiology and did not result in the induction of ...
متن کاملWhat is the tachycardia mechanism?--II.
Case Presentation A 34-year-old man with a 10-year history of paroxysmal supraventricular tachycardia underwent an electiophysiologic procedure. A narrowQRS complex tachycardia with a cycle length of 260 to 280 msec reproducibly was induced by right atrial overdrive pacing. At times there was a 1:1 relationship between the atrium and ventricle (Fig. 1), and at other times there was Mobitz I sec...
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A 70-year-old gentleman was referred for radiofrequency catheter ablation of wide QRS tachycardia that was not terminated with intravenous adenosine. Twelve-lead ECG was normal during sinus rhythm and transthoracic echocardiography demonstrated no evidence of structural heart disease. The electrophysiological study showed a normal AH interval of 104 m and HV interval of 45 m during sinus rhythm...
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A 75-year-old man underwent an electrophysiologic procedure because of recurrent palpitations and documented tachycardia. At baseline, there was sinus rhythm with right bundle branch block. Programmed stimulation demonstrated anterograde dual AV nodal physiology. A regular, long RP tachycardia with a cycle length of 540 msec and inverted P waves in the inferior leads was induced by atrial overd...
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We present a case of incessant wide-complex tachycardia in a patient with left-ventricular assist device, and discuss the differential diagnosis with an in-depth analysis of the intracardiac tracings during the invasive electrophysiologic study, including interpretation of the relative timing of the fascicular signals during tachycardia and in sinus rhythm, and interpretation of pacing and entr...
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ژورنال
عنوان ژورنال: Journal of Innovations in Cardiac Rhythm Management
سال: 2021
ISSN: 2156-3977,2156-3993
DOI: 10.19102/icrm.2021.120407