The electrophysiological characteristics of isolated diastolic potentials in idiopathic ventricular arrhythmias arising from the right ventricular outfl ow tract

Abstract

IDPs were present in patients with RVOT-IVAs. IDPs area and/or border region might be the successful ablation site and their precise mechanism remains to be clarified.

Ablating Premature Ventricular Complexes: Justification, Techniques, and Outcomes

“…11 Mechanistically, it has been proposed that RVOT PVCs are caused by delayed afterdepolarizations or triggered automaticity, provoked by catecholamines, exercise, and menstrual cycles, and inhibited by adenosine. 4,[12][13][14] However, anisotropic extensions of cardiomyocytes above the fibrous valvular annuli have also been hypothesized to allow conduction slowing and unidirectional block, which can lead to reentrant PVCs. 4,[15][16][17] Delayed afterdepolarizations also cause pathologic PVCs, frequently in a bigeminal pattern, in channelopathies such as Andersen-Tawil syndrome or catecholaminergic polymorphic ventricular tachycardia (VT), and in digoxin toxicity.…”

“…47 Any sites with presystolic potentials that reliably precede the earliest activation during PVCs are potential targets. 13,14 Any near-field potential that is late during sinus rhythm but jumps ahead during PVCs suggests reversal of activation and is potentially of interest. Such prepotentials can often be found across areas of fibrosis, for example, above the pulmonary valve or in the aortic sinuses of Valsalva.…”

Synthesis and crystal structure of a two-dimensional sodium coordination polymer of 4,4′-(diazenediyl)bis(1H-1,2,4-triazol-5-one)

“…In recent years, the crystal engineering of coordination polymers has aroused interest due to their structural versatility, unique properties and applications in different areas of science. Therefore, a large body of research has been focused on the structures and topologies of coordination polymers (Kim et al, 2015;Smith, 2013;Liu & Zhao, 2013). In these fields, the selection of appropriate ligands as building blocks is critical in order to afford a range of topologies.…”

A two-dimensional bilayered CdIIcoordination polymer with a three-dimensional supramolecular architecture incorporating 1,2-bis(pyridin-4-yl)ethene and 2,2′-(diazenediyl)dibenzoic acid

“…To date, flexible azobenzene-dicarboxylic acid ligands have been employed as bridging ligands for the construction of functional metal-organic frameworks (MOFs) (Cairns et al, 2008;Lee et al, 2008;Bhattacharya et al, 2011;Yang et al, 2011;Liu et al, 2011;Liu & Zhao, 2013). For example, Yaghi and co-workers reacted 4,4 0 -(diazenediyl)dibenzoic acid (H 2 L 1 ) with Tb(NO 3 ) 3 Á5H 2 O and obtained an interpenetrating network of {Tb 2 (L 1 ) 3 [(CH 3 ) 2 SO] 4 Á16[(CH 3 ) 2 SO]} n with a large free volume (Reineke et al, 2000).…”