Background: Paroxysmal supraventricular tachycardia (NNKPTT) is the most common clinical occurrence, affecting hemodynamics and causing symptoms of palpitations dyspnea in patients. Of mechanisms that cause paroxysmal tachycardia, atrioventricular nodal re-entry (AVNRT), re-entrant (AVRT), atrial (AT) are difficult to distinguish each other. The electrocardiogram can be used confirm diagnose me...

The electrophysiological effects of L 9394 (benzoyl-indolizine), a substance chemically related to amiodarone, but devoid of iodine atoms, were investigated by programmed electrical stimulation of the heart in 12 patients with various forms of tachycardia. Four subjects had electrocardiographic evidence of the WPW syndrome and episodes of circus movement tachycardia. Paroxysmal supraventricular...

T HE Wolff-Parkinson-White syndrome consists of an abnormally short P-R interval, usually prolonged duration of QRS complexes, and history of repeated episodes of paroxysmal tachycardia.' Variations of QRS complex have been observed during tachycardia, following exercise or atropine sulfate,1 or even while patients were at rest.2 The paroxysmal tachyeardias have been generally supraventricular,...

UNLABELLED A young man underwent 2 catheter ablation procedures because of frequent episodes of paroxysmal supraventricular tachycardia (SVT). A left accessory pathway was ablated in the first procedure. The patient underwent the second ablation procedure due to a recurrent SVT demonstrated by 12-lead electrocardiogram two weeks after the first procedure. During the second procedure, a SVT with...

limitations. A long-term study. Ann Intern Med 88: 17, 1978 24. Josephson ME, Kastor JA: Paroxysmal supraventricular tachycardia. Is the atrium a necessary link? Circulation 54: 430, 1976 25. Bauernfeind RA, Wu D, Denes P, Rosen KM: Retrograde block during dual pathway atrioventricular nodal reentrant paroxysmal tachycardia. Am J Cardiol 42: 499, 1978 26. Wellens HJJ, Wesdorp JC, Duren DR, Lie ...

A 27-year-old man with a 10-year history of recurrent episodes of paroxysmal supraventricular tachycardia underwent an electrophysiologic procedure. The baseline sinus cycle length was 860 msec, and the atrial-His (AH) and Hisventricular (HV) intervals were 80 and 45 msec, respectively. A narrow QRS-complex tachycardia was induced by atrial overdrive pacing. The cycle length of the tachycardia ...