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Classical fluoroscopy criteria poorly predict right ventricular lead septal positioning by comparison with echocardiography

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Abstract

Background

Fluoroscopic criteria have been described for the documentation of septal right ventricular (RV) lead positioning, but their accuracy remains questioned.

Methods and results

Consecutive patients undergoing pacemaker or defibrillator implantation were prospectively included. RV lead was positioned using postero-anterior and left anterior oblique 40° incidences, and right anterior oblique 30° to rule out coronary sinus positioning when suspected. RV lead positioning using fluoroscopy was compared to true RV lead positioning as assessed by transthoracic echocardiography (TTE). Precise anatomical localizations were determined with both modalities; then, RV lead positioning was ultimately dichotomized into two simple clinically relevant categories: RV septal or RV free wall. Accuracy of fluoroscopy for RV lead positioning was then assessed by comparison with TTE. We included 100 patients. On TTE, 66/100 had a septal RV lead and 34/100 had a free wall RV lead. Fluoroscopy had moderate agreement with TTE for precise anatomical localization of RV lead (k = 0.53), and poor agreement for septal/free wall localization (k = 0.36). For predicting septal RV lead positioning, classical fluoroscopy criteria had a high sensitivity (95.5%; 63/66 patients having a septal RV lead on TTE were correctly identified by fluoroscopy) but a very low specificity (35.3%; only 12/34 patients having a free wall RV lead on TTE were correctly identified by fluoroscopy).

Conclusion

Classical fluoroscopy criteria have a poor accuracy for identifying RV free wall leads, which are most of the time misclassified as septal. This raises important concerns about the efficacy and safety of RV lead positioning using classical fluoroscopy criteria.

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Authors and Affiliations

  1. CHU de Nice, Hôpital Pasteur, Service de Cardiologie, 30 Avenue de la Voie Romaine, CS 51069, 06001, Nice Cedex 1, France

    Fabien Squara, Didier Scarlatti, Philippe Riccini, Gauthier Garret, Pamela Moceri & Emile Ferrari

Authors
  1. Fabien Squara
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  2. Didier Scarlatti
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  3. Philippe Riccini
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  4. Gauthier Garret
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  5. Pamela Moceri
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  6. Emile Ferrari
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Correspondence to Fabien Squara.

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The authors declare that they have no conflict of interest.

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Squara, F., Scarlatti, D., Riccini, P. et al. Classical fluoroscopy criteria poorly predict right ventricular lead septal positioning by comparison with echocardiography. J Interv Card Electrophysiol 52, 209–215 (2018). https://doi.org/10.1007/s10840-018-0355-x

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  • DOI: https://doi.org/10.1007/s10840-018-0355-x

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