During paroxysmal supraventricular tachycardia, patients frequently experience chest pain and marked ST segment depression suggesting acute myocardial ischemia. The purpose of this study was to assess whether ST depression during supraventricular tachycardia is caused by myocardial ischemia as reflected by net myocardial lactate production. Twenty-five patients (14 men, 11 women) who had a hist...

Any tachyarrhythmia arising from the atria or the atrioventricular junction is a supraventricular tachycardia. In clinical practice, however, the term supraventricular tachycardia is reserved for atrial tachycardias and arrhythmias arising from the region of the atrioventricular junction as a result of a re-entry mechanism (junctional tachycardias). The most common junctional tachycardias are a...

Figure 1 A: Twelve-lead electrocardiogram recorded during supraventricular tachycardia. B: Cardiac tracings showing supraventricular tachycardia with a cycle length of 220 ms and 2:1 atrioventricular conduction. ABLd (p)1⁄4 the distal (proximal) electrode pair of the ablation catheter; Refs 1 to 51⁄4 the first (distal) to fifth (proximal) electrode pairs of the reference catheter positioned in ...

We report the occurrence of supraventricular tachycardia during intravenous immunoglobulin (IVIG) infusion. Supraventricular tachycardia was observed in two newborn patients during IVIG infusion. Both of the babies responded to adenosine treatment. Cardiorespiratory monitoring during IVIG infusion can be recommended because of the possibility of this potentially lifethreatening adverse effect.

A 41-year-old male was presented with drug-resistant supraventricular tachycardia. Electrophysiological study confirmed that the supraventricular tachycardia was caused by dual atrioventricular nodal pathways and a left lateral accessory pathway (AP). The left lateral AP was resistant to traditional endocardial ablation, but was successfully eliminated by radiofrequency ablation via the intraco...

The effects of isoprenaline on the induction of supraventricular tachycardia by programmed stimulation were studied in 67 patients to see whether they correlated with spontaneous catecholamine mediated symptoms during exercise testing and Holter monitoring. Thirty seven control patients (group 1) did not have spontaneous arrhythmias either during exercise testing or Holter monitoring. Thirty pa...