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Case Reports
. 2008 Jul;24(7):e43-4.
doi: 10.1016/s0828-282x(08)70645-7.

Is this pacemaker working properly? Prolongation of the atrial escape interval following activation of the ventricular safety pacing algorithm in a dual-chamber implantable cardioverter defibrillator with atrial-based, lower rate timing

Amer M Johri  1 , Adrian Baranchuk, Christopher S Simpson, Damian P Redfearn, Hoshiar Abdollah
Affiliations
Case Reports

Is this pacemaker working properly? Prolongation of the atrial escape interval following activation of the ventricular safety pacing algorithm in a dual-chamber implantable cardioverter defibrillator with atrial-based, lower rate timing

Amer M Johri et al. Can J Cardiol. 2008 Jul.

Abstract
in English, French

With the introduction of various new pacing features and algorithms, 12-lead electrocardiogram analysis of paced rhythms can be a challenging undertaking. An incorrect interpretation may lead to an inappropriate medical decision in the care of such patients. The authors present an interesting paced 12-lead electrocardiogram that posed a diagnostic challenge.

Avec l’adoption de diverses nouvelles caractéristiques et de nouveaux algorithmes d’entraînement électrosystolique, l’analyse de l’électrocardiogramme à 12 dérivations des rythmes électro-entraînés peut devenir complexe. Une mauvaise interprétation peut donner lieu à une décision médicale incorrecte pour les soins de ces patients. Les auteurs présentent un électrocardiogramme à 12 dérivations électro-entraînées intéressant qui a posé un défi diagnostique.

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Figures

Figure 1)
Figure 1)
A 12-lead electrocardiogram obtained during a routine follow-up. B Detailed analysis of intervals. A-A Paced atrial beat to paced atrial beat interval; AEI Atrial escape interval; AVD Atrioventricular delay; SP Safety pacing
See this image and copyright information in PMC

References

    1. Ellenbogen KA, Kay GN, Lau C, Wilkoff BL, editors. 3rd edn. Philadelphia: Saunders Elsevier; 2007. Clinical Cardiac Pacing, Defibrillation and Resynchronization Therapy; pp. 1045–7.
    1. Barold SS. Far-field R wave sensing causing prolongation of the atrial escape interval of DDD pacemakers with atrial-based lower rate timing. PACE. 2003;26:2188–91. - PubMed

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