Background: Wild-type transthyretin cardiac amyloidosis (ATTRwt-CA) can lead to refractory heart failure. A "lead paradox" occurs when patients with a Micra leadless pacemaker require lead-based Cardiac Contractility Modulation (CCM) therapy.
Case summary: We detail the first co-implantation of CCM and Micra devices in a 78-year-old male with ATTRwt-CA and NYHA III heart failure. A multi-view fluoroscopic technique ensured spatial separation, while specific device programming mitigated electrical crosstalk post-procedure.
Conclusion: At 1 year, the patient stabilized to NYHA Class II without further hospitalizations. This dual-device strategy is a feasible and safe technical roadmap for this complex clinical problem.
Keywords: Cardiac Contractility Modulation; cardiac amyloidosis; case report; device–device interaction; electrophysiology technique; leadless pacemaker.
© 2026 The Author(s). Journal of Cardiovascular Electrophysiology published by Wiley Periodicals LLC.