Linking Phenomenon in Dual Atrioventricular Nodal Pathways.

Itagaki, Takeshi; Ohnishi, Yozo; Inoue, Tomoo; Yokoyama, Mitsuhiro

doi:10.1253/jcj.65.937

Cited by 11 publications

(4 citation statements)

References 12 publications

(9 reference statements)

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“…Observations and maneuvers to confirm DAVNNT generally rely on the ability to demonstrate behavior consistent with AV nodal properties. The relationship between the His potentials of the fast and slow pathways are typically very stable and referred to as “linked.” 57 A zone of dual ventricular response can sometimes be established by altering the atrial cycle length 5,10,16 . The slow pathway conduction is inversely related to the preceding sinus cycle length, which is consistent with decremental conduction properties seen in the AV node 10 .…”

Section: Discussionmentioning

confidence: 67%

Dual Atrioventricular Nodal Nonreentrant Tachycardia: A Systematic Review

Wang

2011

Pacing Clinical Electrophis

114

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Section: Discussionmentioning

confidence: 67%

Dual Atrioventricular Nodal Nonreentrant Tachycardia: A Systematic Review

Wang

2011

Pacing Clinical Electrophis

114

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“…2). Linking phenomenon is present in the majority of patients with dual AV nodal physiology 1 . Of note, the third P wave conducts with a shorter PR interval than the preceding slow pathway PR interval.…”

Section: Commentarymentioning

confidence: 99%

Intermittent Impairment of Atrioventricular Conduction: What is the Mechanism?

Jastrzębski

2009

Cardiovasc electrophysiol

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Case PresentationThe electrocardiogram (ECG) presented in Figure 1 was obtained from a 62-year-old woman, with a 10-year history of heart palpitations and several syncopal and presyncopal episodes in the last few months, who was referred for electrophysiological study and pacemaker implantation. The echocardiogram was unremarkable apart from moderate tricuspid regurgitation. A nonarrhythmia ECG was also normal with a PR interval of 160 milliseconds. She presented with almost permanent irregular supraventricular tachyarrhythmia at 120-170 bpm, interspersed with frequent supraventricular ectopy (several thousand per 24 hour) and periods of pronounced paroxysmal first degree atrioventricular (AV) block with a PR of approximately 600 milliseconds (Fig. 1). Is it possible that a single mechanism underlies all of the observed ECG phenomena? Figure 1. A resting electrocardiogram typical for the current patient demonstrating supraventricular arrhythmia and an episode of pronounced first-degree AV block.

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“…In the current case, “1 to 2 response” to sinus and atrial premature beats also confirmed by positive P waves at inferior leads. The relationship between the His potentials of the fast and slow pathways are typically very stable and referred to as “linked 14 . Therefore, the diagnosis is dual tachycardia with 1:2 tachycardia (“nonreentrant” AVNRT) and AVNRT with retrograde 1:2 response in the same patient.…”

Section: Discussionmentioning

confidence: 99%