Cardiac resynchronization therapy in persistent left superior vena cava: Can you do it two-leads-only?  Mauro Biffi, MD, Giulia Massaro, MD, Igor Diemberger,

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Cardiac resynchronization therapy in persistent left superior vena cava: Can you do it two-leads-only?  Mauro Biffi, MD, Giulia Massaro, MD, Igor Diemberger, MD, PhD, Cristian Martignani, PhD, Alessandro Corzani, MD, Matteo Ziacchi, MD, PhD  HeartRhythm Case Reports  Volume 3, Issue 1, Pages 30-32 (January 2017) DOI: 10.1016/j.hrcr.2016.08.004 Copyright © 2016 Heart Rhythm Society Terms and Conditions

Figure 1 Specific characteristics of the Protego DF-1 Pro MRI S DX lead. HeartRhythm Case Reports 2017 3, 30-32DOI: (10.1016/j.hrcr.2016.08.004) Copyright © 2016 Heart Rhythm Society Terms and Conditions

Figure 2 A: Venogram taken from the persistent left superior vena cava showing a posterior coronary vein suitable for left ventricle (LV) lead placement. Note the high-lateral right atrial placement of the atrial sensing dipole. B: Selective venogram from the posterior vein. C: Right anterior oblique view of the active fixation lead placed in the posterior coronary vein chosen as target. D: Left anterior oblique view of the active fixation LV lead placed inside the target coronary vein. HeartRhythm Case Reports 2017 3, 30-32DOI: (10.1016/j.hrcr.2016.08.004) Copyright © 2016 Heart Rhythm Society Terms and Conditions

Figure 3 Long-term electrical performance of both leads at 4 months follow-up. HeartRhythm Case Reports 2017 3, 30-32DOI: (10.1016/j.hrcr.2016.08.004) Copyright © 2016 Heart Rhythm Society Terms and Conditions