Reciprocating supraventricular tachycardia in children: Low rate at rest as a major factor related to propensity to syncope during exercise

AV nodal reentrant tachycardia or AV reentrant tachycardia using a concealed bypass tract-related adverse events

“…SVT-related syncope has also been reported by our group [17] as well as by several other authors [18]. The causes are various and include rapid heart rate, associated spontaneous AV, sino-or atrioventricular disturbances, advanced heart disease or carotid stenosis-associated SVT as well as enhanced vagal reaction at the end of SVT.…”

“…SVT ablation is a common procedure and has been performed for many years [17,18]: outcome is generally excellent although complications such as tamponade, complete AV block or hemorrhagic events have been reported [19,20]. However the risk of major complications is small, with major complication rates ranging between 0.8% and 6.0% depending on the ablation procedure performed [21,22].…”

2015 ACC/AHA/HRS Guideline for the Management of Adult Patients With Supraventricular Tachycardia: Executive Summary

“…For pts w/ a recurrence, all except one had their first recurrence w/in 12 mo of diagnosis and one had hemodynamic instability. 5 …”

“…4,5 Practical considerations, including time and resource constraints, limit the ERCs to evidence that is relevant to key clinical questions and lends itself to systematic review and analysis that could affect the strength of corresponding recommendations. Recommendations developed by the GWC on the basis of the systematic review are marked " SR ".…”

“…The Level of Evidence (LOE) rates evidence supporting the effect of the intervention on the basis of the type, quality, quantity, and consistency of data from clinical trials and other reports (Table 1). 5,7 Unless otherwise stated, recommendations are sequenced by COR and then by LOE. Where comparative data exist, preferred strategies take precedence.…”