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Lacour P, Parwani AS, Schuessler F, Hohendanner F, Heinzel FR, Trippel TD, Boldt LH, Pieske B, Blaschke F. Are Contemporary Smartwatches and Mobile Phones Safe for Patients With Cardiovascular Implantable Electronic Devices? JACC Clin Electrophysiol 2020; 6:1158-1166. [DOI: 10.1016/j.jacep.2020.04.033] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Revised: 04/20/2020] [Accepted: 04/22/2020] [Indexed: 11/26/2022]
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Napp A, Kolb C, Lennerz C, Bauer W, Schulz-Menger J, Kraus T, Marx N, Stunder D. Elektromagnetische Interferenz von aktiven Herzrhythmusimplantaten im Alltag und im beruflichen Umfeld. DER KARDIOLOGE 2019. [DOI: 10.1007/s12181-019-0335-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Bereuter L, Niederhauser T, Kucera M, Loosli D, Steib I, Schildknecht M, Zurbuchen A, Noti F, Tanner H, Reichlin T, Haeberlin A. Leadless cardiac resynchronization therapy: An in vivo proof-of-concept study of wireless pacemaker synchronization. Heart Rhythm 2019; 16:936-942. [PMID: 30639936 DOI: 10.1016/j.hrthm.2019.01.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Indexed: 01/01/2023]
Abstract
BACKGROUND Contemporary leadless pacemakers (PMs) only feature single-chamber ventricular pacing. However, the majority of patients require dual-chamber pacing or cardiac resynchronization therapy (CRT). Several leadless PMs implanted in the same heart would make that possible if they were able to synchronize their activity in an efficient, safe, and reliable way. Thus, a dedicated ultra-low-power wireless communication method for PM synchronization is required. OBJECTIVE The purpose of this study was to develop a leadless CRT system and to evaluate its function in vivo. METHODS Device synchronization was implemented using conductive intracardiac communication (CIC). Communication frequencies were optimized for intracardiac device-device communication. Energy consumption, safety, and reliability of the leadless PM system were tested in animal experiments. RESULTS We successfully performed CRT pacing with 3 independent devices synchronizing their action using CIC. No arrhythmias were induced by the novel communication technique. Ninety-eight percent of all communication impulses were transmitted successfully. The optimal communication frequency was around 1 MHz, with a corresponding transmitted power of only 0.3 μW at a heart rate of 60 bpm. CONCLUSION Leadless PMs are able to synchronize their action using CIC and may overcome the key limitation of contemporary leadless PMs.
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Affiliation(s)
- Lukas Bereuter
- Department of Cardiology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland; ARTORG Center for Biomedical Engineering, University of Bern, Bern, Switzerland
| | - Thomas Niederhauser
- Institute for Human Centered Engineering, Bern University of Applied Sciences, Bern, Switzerland
| | - Martin Kucera
- Institute for Human Centered Engineering, Bern University of Applied Sciences, Bern, Switzerland
| | - Dominic Loosli
- Institute for Human Centered Engineering, Bern University of Applied Sciences, Bern, Switzerland
| | - Immanuel Steib
- Institute for Human Centered Engineering, Bern University of Applied Sciences, Bern, Switzerland
| | - Marcel Schildknecht
- Institute for Human Centered Engineering, Bern University of Applied Sciences, Bern, Switzerland
| | - Adrian Zurbuchen
- Swiss Institute for Translational and Entrepreneurial Medicine, University of Bern, Bern, Switzerland
| | - Fabian Noti
- Department of Cardiology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Hildegard Tanner
- Department of Cardiology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Tobias Reichlin
- Department of Cardiology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Andreas Haeberlin
- Department of Cardiology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland; Department of Cardiology, Hôpital Haut-Lévêque, Bordeaux, France; IHU Liryc, Electrophysiology and Heart Modeling Institute, Fondation Bordeaux Université, Bordeaux, France.
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