Supraventricular Tachycardia Initiated by Sinus Beats

Supraventricular tachycardia initiated by sinus beats.

In the present report, A-V dissociation with concealed retrograde conduction into the A-V node, caused SINUS beats to exhibit antegrade A-V nodal conduction delay sufficient to result in episodes of supraventricular tachycardia (SVT). In this patient, atrial ectopic premature depolarizations were never observed. The primary role of A-V nodal conduction delay in the genesis of paroxysmal SVT is ...

Verapamil induced premature ventricular beats before reversion of supraventricular tachycardia.

The occurrence in 6 patients of premature ventricular beats before reversion to sinus rhythm, after the intravenous administration ofverapamil-for the treatment of supraventricular tachycardia, is reported. Four patients had pre-excitation syndromes (Wolff-Parkinson-White in I and Lown-Ganong-Levine in 3) and one patient had bradycardia-tachycardia syndrome. In the remaining patient, at previou...

Sinus node re-entry: a mechanism for supraventricular tachycardia.

Rapidly Recurring Supraventricular Tachycardia

or digitalis and quinidine, prevented tachyeardia in five patients and slowed it in one. Our cases suggest the following: (1) Recurrent supraventricular tachycardia in patients without the WPW syndrome may frequently be caused by a reciprocal mechanism. (2) The diagnosis of reciprocating tachycardia should be suspected when (a) the tachycardia recurs within minutes of its termination, (b) the o...

Conversion of supraventricular tachycardia to normal sinus rhythm by dexmedetomidine treatment

provided the original work is properly cited. CC Cardiac dysrhythmias are an important cause of morbidity and mortality in the perioperative period, and they are more common after thoracic surgery and are most often supraventricular in origin [1]. Dexmedetomidine, a highly selective α-2 adrenoceptor agonist, is increasingly being used in anesthesia and critical care because it not only produces...