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KMID : 1011920110120020007
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International Journal of Arrhythmia
2011 Volume.12 No. 2 p.7 ~ p.13
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Diagnostic maneuvers for differentiation of supraventricular tachycardias
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Park Kyoung-Min
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Abstract
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There are three primary mechanisms of paroxysmal supraventricular tachycardia (PSVT). First, atrioventricular nodal reentrant tachycardia (AVNRT; > 65%), second, atrioventricular reciprocating tachycardia (orthodromic AVRT=ORT; < 30%), and third, atrial tachycardia (AT; 5%). For the successful ablation of supraventricular arrhythmias, it is essential to differentiate between focal AT and the other types of reentrant supraventricular tachycardias (SVTs), namely AVNRT and ORT. Typically, ① baseline findings, ② tachycardia characteristics, and ③ ventricular and atrial pacing maneuvers during tachycardia are used for the purpose of reaching the differential diagnosis of supraventricular arrhythmias.
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KEYWORD
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diagnostic maneuvers, supraventricular tachycardia, Para-Hisian pacing, entrainment
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