1
|
Ciriello GD, Colonna D, Correra A, Romeo E, Russo MG, Sarubbi B. Contact allergy to subcutaneous implantable cardioverter defibrillator in a child with Brugada syndrome. Pacing Clin Electrophysiol 2024; 47:1054-1056. [PMID: 38240394 DOI: 10.1111/pace.14921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2023] [Revised: 12/13/2023] [Accepted: 12/23/2023] [Indexed: 08/07/2024]
Abstract
Allergic reactions to components of cardiac implantable electronic devices are rare and often go undiagnosed, which can lead to a misdiagnosis of device infection. Contact allergy to subcutaneous implantable cardioverter defibrillator (S-ICD) is extremely rare. In this report, we present a case of cobalt-related contact allergy in a pediatric patient with Brugada syndrome who underwent S-ICD implantation.
Collapse
Affiliation(s)
| | - Diego Colonna
- Adult Congenital Heart Disease Unit, Department of Cardiology, Monaldi Hospital, Napoli, Italy
| | - Anna Correra
- Adult Congenital Heart Disease Unit, Department of Cardiology, Monaldi Hospital, Napoli, Italy
| | - Emanuele Romeo
- Adult Congenital Heart Disease Unit, Department of Cardiology, Monaldi Hospital, Napoli, Italy
| | - Maria Giovanna Russo
- Pediatric Cardiology Unit - "L. Vanvitelli" University - Monaldi Hospital - Naples, Napoli, Italy
| | - Berardo Sarubbi
- Adult Congenital Heart Disease Unit, Department of Cardiology, Monaldi Hospital, Napoli, Italy
| |
Collapse
|
2
|
Salih A, Goswami T. In Vivo Durability of Polyurethane Insulated Implantable Cardioverter Defibrillator (ICD) Leads. Polymers (Basel) 2024; 16:1722. [PMID: 38932072 PMCID: PMC11207236 DOI: 10.3390/polym16121722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2024] [Revised: 06/09/2024] [Accepted: 06/14/2024] [Indexed: 06/28/2024] Open
Abstract
The 6935M Sprint Quattro Secure S and 6947M Sprint Quattro Secure are high voltage leads designed to administer a maximum of 40 joules of energy for terminating ventricular tachycardia or ventricular fibrillation. Both leads utilize silicone insulation and a polyurethane outer coating. The inner coil is shielded with polytetrafluoroethylene (PTFE) tubing, while other conductors are enveloped in ethylene tetrafluoroethylene (ETFE), contributing to the structural integrity and functionality of these leads. Polyurethane is a preferred material for the outer insulation of cardiac leads due to its flexibility and biocompatibility, while silicone rubber ensures chemical stability within the body, minimizing inflammatory or rejection responses. Thirteen implantable cardioverter defibrillator (ICD) leads were obtained from the Wright State University Anatomical Gift Program. The as-received devices exhibited varied in vivo implantation durations ranging from less than a month to 89 months, with an average in vivo duration of 41 ± 27 months. Tests were conducted using the Test Resources Q series system, ensuring compliance with ASTM Standard D 1708-02a and ASTM Standard D 412-06a. During testing, a load was applied to the intact lead, with careful inspection for surface defects before each test. Results of load to failure, percentage elongation, percentage elongation at 5 N, ultimate tensile strength, and modulus of elasticity were calculated. The findings revealed no significant differences in these parameters across all in vivo exposure durations. The residual properties of these ICD leads demonstrated remarkable stability and performance over a wide range of in vivo exposure durations, with no statistically significant degradation or performance changes observed.
Collapse
Affiliation(s)
- Anmar Salih
- Department of Biomedical, Industrial and Human Factors Engineering, Wright State University, Dayton, OH 45435, USA;
| | - Tarun Goswami
- Department of Biomedical, Industrial and Human Factors Engineering, Wright State University, Dayton, OH 45435, USA;
- Department of Orthopedic Surgery, Sports Medicine and Rehabilitation, Miami Valley Hospital, Dayton, OH 45409, USA
| |
Collapse
|
3
|
Shelke S, Veerubhotla K, Lee Y, Lee CH. Telehealth of cardiac devices for CVD treatment. Biotechnol Bioeng 2024; 121:823-834. [PMID: 38151894 DOI: 10.1002/bit.28637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 12/07/2023] [Accepted: 12/08/2023] [Indexed: 12/29/2023]
Abstract
This review covers currently available cardiac implantable electronic devices (CIEDs) as well as updated progress in real-time monitoring techniques for CIEDs. A variety of implantable and wearable devices that can diagnose and monitor patients with cardiovascular diseases are summarized, and various working mechanisms and principles of monitoring techniques for Telehealth and mHealth are discussed. In addition, future research directions are presented based on the rapidly evolving research landscape including Artificial Intelligence (AI).
Collapse
Affiliation(s)
- Sushil Shelke
- Division of Pharmacology and Pharmaceutics Sciences, School of Pharmacy, University of Missouri-Kansas City, Kansas City, Missouri, USA
| | - Krishna Veerubhotla
- Division of Pharmacology and Pharmaceutics Sciences, School of Pharmacy, University of Missouri-Kansas City, Kansas City, Missouri, USA
| | - Yugyung Lee
- Division of Computer Science, School of Science and Engineering, University of Missouri-Kansas City, Kansas City, Missouri, USA
| | - Chi H Lee
- Division of Pharmacology and Pharmaceutics Sciences, School of Pharmacy, University of Missouri-Kansas City, Kansas City, Missouri, USA
| |
Collapse
|
4
|
Kealaher E, Shah P, Dissanayake T, Thomas DE, Barry J, Margulescu AD. Hypersensitivity Reactions to Components of Cardiac Implantable Electronic Devices and Their Treatment: A Systematic Review. Arrhythm Electrophysiol Rev 2023; 12:e08. [PMID: 37427306 PMCID: PMC10326667 DOI: 10.15420/aer.2022.23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Accepted: 01/14/2023] [Indexed: 07/11/2023] Open
Abstract
Background: Hypersensitivity reactions (HSRs) to components of cardiac implantable electronic devices (CIEDs) are rare but difficult to differentiate from device infection. Data on best management strategies of HSRs to CIEDs are lacking. The aims of this systematic review are to summarise the available literature on the aetiology, diagnosis and management of HSR in CIED patients and to provide guidance on best management strategies for these patients. Methods and results: A systematic search for publications on HSR to CIED in PubMed from January 1970 to November 2022 was conducted, resulting in 43 publications reporting on 57 individual cases. The quality of data was low. The mean age was 57 ± 21 years, and 48% of patients were women. The mean time from implant to diagnosis was 29 ± 59 months. Multiple allergens were identified in 11 patients (19%). In 14 cases (25%) no allergen was identified. Blood tests were mostly normal (55%), but eosinophilia (23%), raised inflammatory markers (18%) and raised immunoglobulin E (5%) were also encountered. Symptoms included local reactions, systemic reactions or both in 77%, 21% and 7% of patients, respectively. Explantation of CIED and reimplantation of another CIED coated with a non-allergenic material was usually successful. Use of topical or systemic steroids was associated with high failure rates. Conclusion: Based on the limited data available, the treatment of choice for HSRs to CIEDs is full CIED removal, reassessment of CIED indication and reimplantation of devices coated in non-allergenic materials. Steroids (topical/systemic) have limited efficiency and should not be used. There is an urgent need for further research in this field.
Collapse
Affiliation(s)
- Emma Kealaher
- Regional Cardiac Centre, Morriston Hospital, Morriston, Swansea, UK
| | - Parin Shah
- Regional Cardiac Centre, Morriston Hospital, Morriston, Swansea, UK
| | | | - Dewi E Thomas
- Regional Cardiac Centre, Morriston Hospital, Morriston, Swansea, UK
| | - James Barry
- Regional Cardiac Centre, Morriston Hospital, Morriston, Swansea, UK
| | | |
Collapse
|
5
|
Sunwoo SH, Cha MJ, Han SI, Kang H, Cho YS, Yeom DH, Park CS, Park NK, Choi SW, Kim SJ, Cha GD, Jung D, Choi S, Oh S, Nam GB, Hyeon T, Kim DH, Lee SP. Ventricular tachyarrhythmia treatment and prevention by subthreshold stimulation with stretchable epicardial multichannel electrode array. SCIENCE ADVANCES 2023; 9:eadf6856. [PMID: 37000879 PMCID: PMC10065438 DOI: 10.1126/sciadv.adf6856] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Accepted: 02/28/2023] [Indexed: 05/24/2023]
Abstract
The implantable cardioverter-defibrillator (ICD) is an effective method to prevent sudden cardiac death in high-risk patients. However, the transvenous lead is incompatible with large-area electrophysiological mapping and cannot accommodate selective multichannel precision stimulations. Moreover, it involves high-energy shocks, resulting in pain, myocardial damage, and recurrences of ventricular tachyarrhythmia (VTA). We present a method for VTA treatment based on subthreshold electrical stimulations using a stretchable epicardial multichannel electrode array, which does not disturb the normal contraction or electrical propagation of the ventricle. In rabbit models with myocardial infarction, the infarction was detected by mapping intracardiac electrograms with the stretchable epicardial multichannel electrode array. Then, VTAs could be terminated by sequential electrical stimuli from the epicardial multichannel electrode array beginning with low-energy subthreshold stimulations. Last, we used these subthreshold stimulations to prevent the occurrence of additional VTAs. The proposed protocol using the stretchable epicardial multichannel electrode array provides opportunities toward the development of innovative methods for painless ICD therapy.
Collapse
MESH Headings
- Rabbits
- Animals
- Tachycardia, Ventricular/therapy
- Tachycardia, Ventricular/epidemiology
- Tachycardia, Ventricular/etiology
- Defibrillators, Implantable/adverse effects
- Heart Ventricles
- Death, Sudden, Cardiac/etiology
- Death, Sudden, Cardiac/prevention & control
- Death, Sudden, Cardiac/epidemiology
- Myocardial Infarction/therapy
- Myocardial Infarction/etiology
Collapse
Affiliation(s)
- Sung-Hyuk Sunwoo
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea
- Institute of Radiation Medicine, Seoul National University Medical Research Center, Seoul 03080, Republic of Korea
| | - Myung-Jin Cha
- Departments of Cardiology and Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Republic of Korea
- Division of Cardiology, Department of Internal Medicine, Seoul National University Hospital, Seoul 03080, Republic of Korea
| | - Sang Ihn Han
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea
| | - Hyejeong Kang
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea
- Division of Cardiology, Department of Internal Medicine, Seoul National University Hospital, Seoul 03080, Republic of Korea
| | - Ye Seul Cho
- Division of Cardiology, Department of Internal Medicine, Seoul National University Hospital, Seoul 03080, Republic of Korea
| | - Da-Hae Yeom
- Division of Cardiology, Department of Internal Medicine, Seoul National University Hospital, Seoul 03080, Republic of Korea
| | - Chan Soon Park
- Division of Cardiology, Department of Internal Medicine, Seoul National University Hospital, Seoul 03080, Republic of Korea
| | - Na Kyeong Park
- Department of Physiology, Seoul National University College of Medicine, Seoul 03080, Republic of Korea
| | - Seong Woo Choi
- Department of Physiology, Dongguk University College of Medicine, Gyeongju 38066, Republic of Korea
| | - Sung Joon Kim
- Department of Physiology, Seoul National University College of Medicine, Seoul 03080, Republic of Korea
| | - Gi Doo Cha
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea
| | - Dongjun Jung
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea
| | - Suji Choi
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea
| | - Seil Oh
- Division of Cardiology, Department of Internal Medicine, Seoul National University Hospital, Seoul 03080, Republic of Korea
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul 03080, Republic of Korea
| | - Gi-Byoung Nam
- Departments of Cardiology and Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Republic of Korea
| | - Taeghwan Hyeon
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea
| | - Dae-Hyeong Kim
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea
- School of Chemical and Biological Engineering and Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea
- Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Seung-Pyo Lee
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea
- Division of Cardiology, Department of Internal Medicine, Seoul National University Hospital, Seoul 03080, Republic of Korea
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul 03080, Republic of Korea
| |
Collapse
|
6
|
Orszulak M, Orszulak W, Urbańczyk-Swić D, Filipecki A, Kwaśniewski W, Mizia-Stec K. Transient out-of-range impedance in "hybrid" implantable cardioverter-defibrilator (ICD) system: a case series. PACING AND CLINICAL ELECTROPHYSIOLOGY: PACE 2021; 45:270-273. [PMID: 34743332 DOI: 10.1111/pace.14401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 10/09/2021] [Accepted: 10/31/2021] [Indexed: 11/28/2022]
Abstract
A retrospective analysis of 60 patients with hybrid ICD systems: Boston Scientific device paired with non-Boston leads. In 10 (17%) patients transient, out-of-range peaks of ventricular pace impedance trend were observed. Probable cause is header-lead interaction incompatibility. This matter is known mainly for pacemakers systems but not for ICDs. Investigation this issue is crucial because consequences in ICD systems are unpredictable and risk might be higher than in pacing systems. This article is protected by copyright. All rights reserved.
Collapse
Affiliation(s)
- Michał Orszulak
- First Department of Cardiology, School of Medicine in Katowice, Medical University of Silesia, ul. Ziolowa 45/47, 40-635, Katowice, Poland
| | - Witold Orszulak
- First Department of Cardiology, School of Medicine in Katowice, Medical University of Silesia, ul. Ziolowa 45/47, 40-635, Katowice, Poland
| | - Dagmara Urbańczyk-Swić
- First Department of Cardiology, School of Medicine in Katowice, Medical University of Silesia, ul. Ziolowa 45/47, 40-635, Katowice, Poland
| | - Artur Filipecki
- First Department of Cardiology, School of Medicine in Katowice, Medical University of Silesia, ul. Ziolowa 45/47, 40-635, Katowice, Poland
| | - Wojciech Kwaśniewski
- First Department of Cardiology, School of Medicine in Katowice, Medical University of Silesia, ul. Ziolowa 45/47, 40-635, Katowice, Poland
| | - Katarzyna Mizia-Stec
- First Department of Cardiology, School of Medicine in Katowice, Medical University of Silesia, ul. Ziolowa 45/47, 40-635, Katowice, Poland
| |
Collapse
|
7
|
Swerdlow CD, Ploux S, Poole JE, Nair SG, Himes A, Ellenbogen KA. Interpreting device diagnostics for lead failure. Heart Rhythm 2021; 19:154-164. [PMID: 34597770 DOI: 10.1016/j.hrthm.2021.09.027] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/28/2021] [Revised: 09/11/2021] [Accepted: 09/15/2021] [Indexed: 11/30/2022]
Abstract
Implantable cardioverter-defibrillators (ICDs) incorporate automated, lead-monitoring alerts (alerts) and other diagnostics to detect defibrillation lead failure (LF) and minimize its adverse clinical consequences. Partial conductor fractures cause oversensing, but pacing or high-voltage alerts for high impedance detect only complete conductor fracture. In both pacing and high-voltage insulation breaches, low-impedance alerts require complete breach with metal-to-metal contact. Oversensing alerts for pace-sense LF also require complete breach, but not metal-to metal contact. Electrograms (EGMs) from leads with confirmed fractures have characteristics findings. In insulation breach, however, oversensed EGMs reflect characteristics of the source signal. Oversensing alerts that operate on the sensing channel analyze R-R intervals for 2 patterns typical of LF but uncommon in other conditions: a rapidly increasing count of "nonphysiological" short intervals and rapid "nonsustained tachycardias." These alerts are sensitive but nonspecific. Alerts that compare sensing and shock channels define oversensing as sensed events that do not correlate temporally with EGMs on the shock channel. Their performance depends on implementation. Specific advantages and limitations are reviewed. Most ICDs measure impedance using subthreshold pulses. Patterns in impedance trends provide diagnostic information, whether or not an alert is triggered. Gradual increases in impedance do not indicate structural LF, but they may cause failed defibrillation if shock impedance is high enough. Because impedance-threshold alerts are insensitive, normal impedance trends never exclude LF, but an abrupt increase that triggers an alert almost always indicates a header connection issue or LF. Methods for discriminating connection issues from LF are reviewed.
Collapse
Affiliation(s)
- Charles D Swerdlow
- Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, California.
| | - Sylvain Ploux
- IHU Liryc, Electrophysiology and Heart Modeling Institute, Fondation Bordeaux Université, Bordeaux University Hospital (CHU), Cardio-Thoracic Unit, Bordeaux, France
| | - Jeanne E Poole
- University of Washington School of Medicine, Seattle Washington,4 New Mexico Heart Institute (NMHI), Lovelace Medical Center, Albuquerque, New Mexico
| | | | | | | |
Collapse
|
8
|
Delnoy PPHM, Gutleben KJ, Bruun NE, Maier SKG, Oswald H, Stellbrink C, Johansen JB, Paule S, Søgaard P. Hemodynamic monitoring by intracardiac impedance measured by cardiac resynchronization defibrillators: Evaluation in a controlled clinical setting (BIO.Detect HF II study). Indian Pacing Electrophysiol J 2021; 21:209-218. [PMID: 33866018 PMCID: PMC8263311 DOI: 10.1016/j.ipej.2021.04.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 03/31/2021] [Accepted: 04/12/2021] [Indexed: 12/28/2022] Open
Abstract
Background In patients with cardiac resynchronization therapy defibrillators (CRT-Ds), intracardiac impedance measured by dedicated CRT-D software may be used to monitor hemodynamic changes. We investigated the relationship of hemodynamic parameters assessed by intracardiac impedance and by echocardiography in a controlled clinical setting. Methods The study enrolled 68 patients (mean age, 66 ± 9 years; 74% males) at 12 investigational sites. The patients had an indication for CRT-D implantation, New York Heart Association class II/III symptoms, left ventricular ejection fraction 15%–35%, and a QRS duration ≥150 ms. Two months after a CRT-D implantation, hemodynamic changes were provoked by overdrive pacing. Intracardiac impedance was recorded at rest and at four pacing rates ranging from 10 to 40 beats/min above the resting rate. In parallel, echocardiography measurements were performed. We hypothesized that a mean intra-individual correlation coefficient (rmean) between stroke impedance (difference between end-systolic and end-diastolic intracardiac impedance) measured by CRT-D and the aortic velocity time integral (i.e., stroke volume) determined by echocardiography would be significantly larger than 0.65. Results The hypothesis was evaluated in 40 patients with complete data sets. The rmean was 0.797, with a lower confidence interval bound of 0.709. The study hypothesis was met (p = 0.007). A stepwise reduction of stroke impedance and stroke volume was observed with increasing heart rate. Conclusions Intracardiac impedance measured by implanted CRT-Ds correlated well with the aortic velocity time integral (stroke volume) determined by echocardiography. The impedance measurements bear potential and are readily available technically, not requiring implantation of additional material beyond standard CRT-D system. Intracardiac impedance measurement feature (ICI-MF) is integrated in some CRT-Ds. We studied relationship between echo hemodynamic parameters and ICI-MF of CRT-Ds. Stroke volume by echo correlated well with stroke impedance by ICI-MF of CRT-Ds. Stepwise reduction in stroke impedance and stroke volume with increasing heart rate. The ICI-MF bears potential and requires only a ‘standard’ CRT-D system implantation.
Collapse
Affiliation(s)
| | | | - Niels Eske Bruun
- Clinical Institute, Copenhagen and Aalborg Universities, Dept. Cardiology, Zealand University Hospital, Roskilde, Denmark
| | | | - Hanno Oswald
- Medizinische Hochschule Hannover, Hannover, Germany
| | | | | | | | - Peter Søgaard
- Heart Center and Clinical Institute, Aalborg University Hospital, Aalborg, Denmark
| |
Collapse
|
9
|
Jung M, Liu Z, Gvk SS, Julien E, Shan N. A fatigue-resistant microcable for small diameter leads of active implantable medical devices. J Mech Behav Biomed Mater 2021; 116:104348. [PMID: 33571841 DOI: 10.1016/j.jmbbm.2021.104348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Revised: 01/18/2021] [Accepted: 01/19/2021] [Indexed: 11/17/2022]
Abstract
Reliability is a key-but-challenging requirement of active implantable medical devices. Implanted medical devices, such as leads, are exposed to tough environments in terms of corrosion and movement. Alongside good reliability, there is also a need for the size of medical implants to be reduced, both to minimize trauma and to enable sites that have hitherto been inaccessible to be reached, such as the tortuous venous collateral network of the left ventricle. Finally, specific electrical properties are required to adequately stimulate or sense specific regions within the human body. In this work, we present a composite microcable that combines small size with high electrical performance and long-term lead robustness. Combining multiple individually insulated electrical conductors in a microcable structure is perfectly suited for leads with multiple selectively contacted electrodes. The use of fine wires of 19 μm diameter enables the manufacture of a 7 × 7 microcable with an extremely small total diameter of less than 0.3 mm. In addition, the fine wires are composed of a core-shell metal-to-metal composite, which allows multiple advantages in one microcable: good X-ray visibility, high electrical conductivity, and very high fatigue resistance. The new MP35N®-Pt composite wire exhibits very strong lead robustness with good electrical conductivity. The fatigue test results presented were obtained by applying 90° bending under tensile load and show that the microcable has a 35-fold increase in high cycle fatigue robustness compared to standard PtIr20 leads. The resulting fracture surfaces were analyzed with scanning electron microscopy. Complementary results from conductivity measurements, X-ray visibility tests and mechanical testing have also been presented to illustrate the benefits of this newly developed composite microcable compared to state-of-the-art electrical conductors for medical implant applications.
Collapse
Affiliation(s)
- Markus Jung
- Advanced Engineering, Heraeus Medical Components, Heraeusstrasse 12, 63450, Hanau, Germany.
| | - Zhenyun Liu
- Research & Development, Heraeus Materials Singapore Pte Ltd, Serangoon North Avenue 4, 555852, Singapore
| | - Sai Srikanth Gvk
- Research & Development, Heraeus Materials Singapore Pte Ltd, Serangoon North Avenue 4, 555852, Singapore
| | - Etienne Julien
- Research & Development, Microport CRM, 4, Avenue Reaumur, 92140, Clamart, France
| | - Nicolas Shan
- Research & Development, Microport CRM, 4, Avenue Reaumur, 92140, Clamart, France
| |
Collapse
|
10
|
Gianni C, Canby RC, Della Rocca DG, Natale A, Al-Ahmad A. Dizziness during atrial antitachycardia pacing: What is the cause. J Cardiovasc Electrophysiol 2020; 31:3036-3041. [PMID: 32864770 DOI: 10.1111/jce.14728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 08/18/2020] [Accepted: 08/20/2020] [Indexed: 12/01/2022]
Abstract
A 74-year-old with a history of sinus node dysfunction and intermittent AV block s/p permanent pacemaker implant 6 years prior, complains of one episode of dizziness.
Collapse
Affiliation(s)
- Carola Gianni
- Texas Cardiac Arrhythmia Institute, Austin, Texas, USA
| | | | | | - Andrea Natale
- Texas Cardiac Arrhythmia Institute, Austin, Texas, USA.,Interventional Electrophysiology, Scripps Clinic, La Jolla, California, USA.,MetroHealth Medical Center, Case Western Reserve University School of Medicine, Cleveland, Ohio, USA
| | - Amin Al-Ahmad
- Texas Cardiac Arrhythmia Institute, Austin, Texas, USA
| |
Collapse
|
11
|
Almehmadi F, Duffett S, Khan HR, Klein G, Yee R. Double chamber cross-talk, the ultimate double-cross. PACING AND CLINICAL ELECTROPHYSIOLOGY: PACE 2020; 43:1599-1604. [PMID: 32597505 DOI: 10.1111/pace.13998] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 05/03/2020] [Accepted: 06/07/2020] [Indexed: 11/28/2022]
Abstract
Cross-talk is a well-described phenomenon in a dual-chamber cardiovascular implantable electronic device. Far-field ventricular events are more commonly sensed in the atrial channel, the reverse is uncommon, and seeing both at the same time has never been reported. We present a case of double cross-talk in a dual-chamber Medtronic ® implantable cardioverter-defibrillator. In this report, we decipher an unusual device response to the cross-talk and describe the programming changes required to resolve it.
Collapse
Affiliation(s)
- Fahad Almehmadi
- Heart Rhythm Program, London Health Sciences Centre, University of Western Ontario, London, Ontario, Canada.,King Faisal Cardiac Center, National Guard Health Affairs, King Saud bin Abdulaziz University for Health Sciences, Jeddah, Saudi Arabia
| | - Stephen Duffett
- Heart Rhythm Program, London Health Sciences Centre, University of Western Ontario, London, Ontario, Canada.,Department of Medicine, Memorial University, St. John's, Newfoundland, Canada
| | - Habib R Khan
- Heart Rhythm Program, London Health Sciences Centre, University of Western Ontario, London, Ontario, Canada
| | - George Klein
- Heart Rhythm Program, London Health Sciences Centre, University of Western Ontario, London, Ontario, Canada
| | - Raymond Yee
- Heart Rhythm Program, London Health Sciences Centre, University of Western Ontario, London, Ontario, Canada
| |
Collapse
|
12
|
Seal plug damage causing inappropriate detection and therapy in a subcutaneous defibrillator system. HeartRhythm Case Rep 2019; 5:66-69. [PMID: 30820398 PMCID: PMC6379300 DOI: 10.1016/j.hrcr.2018.02.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
|
13
|
Nair SG, Swerdlow CD. Monitoring for and Diagnosis of Lead Dysfunction. Card Electrophysiol Clin 2018; 10:573-599. [PMID: 30396573 DOI: 10.1016/j.ccep.2018.07.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
|
14
|
Lacour P, Parwani A, Huemer M, Attanasio P, Dang PL, Luebcke J, Schleussner L, Blaschke D, Boldt LH, Pieske B, Haverkamp W, Blaschke F. What physicians do in case of a failure of the pace-sense part of a defibrillation lead : Survey in Germany, Austria and Switzerland. Herz 2018; 45:362-368. [PMID: 30054714 DOI: 10.1007/s00059-018-4736-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Revised: 06/14/2018] [Accepted: 07/10/2018] [Indexed: 10/28/2022]
Abstract
BACKGROUND The possible treatment strategies for defects of the pace-sense (P/S) part of a defibrillation lead are either implantation of a new high-voltage (HV)-P/S lead, with or without extraction of the malfunctioning lead, or implantation of a P/S lead. METHODS We conducted a Web-based survey across cardiac implantable electronic device (CIED) centers to investigate their procedural practice and decision-making process in cases of failure of the P/S portion of defibrillation leads. In particular, we focused on the question of whether the integrity of the HV circuit is confirmed by a test shock before decision-making. The questionnaire included 14 questions and was sent to 951 German, 341 Austrian, and 120 Swiss centers. RESULTS The survey was completed by 183 of the 1412 centers surveyed (12.7% response rate). Most centers (90.2%) do not conduct a test shock to confirm the integrity of the HV circuit before decision-making. Procedural practice in lead management varies depending on the presentation of lead failure and whether the center applies a test shock. In centers that do not conduct a test shock, the majority (69.9%) implant a new HV-P/S lead. Most centers (61.7%) that test the integrity of the HV system implant a P/S lead. The majority of centers favor DF-4 connectors (74.1%) over DF-1 connectors (25.9%) at first CIED implantation. CONCLUSION Either implanting a new HV-P/S lead or placing an additional P/S lead are selected strategies if the implantable cardioverter-defibrillator lead failure is localized to the P/S portion. However, conducting a test shock to confirm the integrity of the HV component is rarely performed.
Collapse
Affiliation(s)
- P Lacour
- Department of Cardiology, Charité-Universitaetsmedizin Berlin, Campus Virchow-Klinikum, Augustenburger Platz 1, 13353, Berlin, Germany
| | - A Parwani
- Department of Cardiology, Charité-Universitaetsmedizin Berlin, Campus Virchow-Klinikum, Augustenburger Platz 1, 13353, Berlin, Germany
| | - M Huemer
- Department of Cardiology, Charité-Universitaetsmedizin Berlin, Campus Virchow-Klinikum, Augustenburger Platz 1, 13353, Berlin, Germany
| | - P Attanasio
- Department of Cardiology, Charité-Universitaetsmedizin Berlin, Campus Virchow-Klinikum, Augustenburger Platz 1, 13353, Berlin, Germany
| | - P L Dang
- Department of Cardiology, Charité-Universitaetsmedizin Berlin, Campus Virchow-Klinikum, Augustenburger Platz 1, 13353, Berlin, Germany
| | - J Luebcke
- Department of Cardiology, Charité-Universitaetsmedizin Berlin, Campus Virchow-Klinikum, Augustenburger Platz 1, 13353, Berlin, Germany
| | - L Schleussner
- Department of Cardiology, Charité-Universitaetsmedizin Berlin, Campus Virchow-Klinikum, Augustenburger Platz 1, 13353, Berlin, Germany
| | - D Blaschke
- Department of Cardiology, Charité-Universitaetsmedizin Berlin, Campus Virchow-Klinikum, Augustenburger Platz 1, 13353, Berlin, Germany
| | - L-H Boldt
- Department of Cardiology, Charité-Universitaetsmedizin Berlin, Campus Virchow-Klinikum, Augustenburger Platz 1, 13353, Berlin, Germany
| | - B Pieske
- Department of Cardiology, Charité-Universitaetsmedizin Berlin, Campus Virchow-Klinikum, Augustenburger Platz 1, 13353, Berlin, Germany
| | - W Haverkamp
- Department of Cardiology, Charité-Universitaetsmedizin Berlin, Campus Virchow-Klinikum, Augustenburger Platz 1, 13353, Berlin, Germany
| | - F Blaschke
- Department of Cardiology, Charité-Universitaetsmedizin Berlin, Campus Virchow-Klinikum, Augustenburger Platz 1, 13353, Berlin, Germany.
| |
Collapse
|
15
|
Interaction between shock coils increased the incidence of inappropriate therapies and lead failure in implantable cardioverter defibrillator. Indian Pacing Electrophysiol J 2017; 18:20-24. [PMID: 29107755 PMCID: PMC5840847 DOI: 10.1016/j.ipej.2017.10.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2017] [Revised: 09/21/2017] [Accepted: 10/24/2017] [Indexed: 11/23/2022] Open
Abstract
AIMS Shock coil interaction in patients with multiple implantable cardioverter defibrillator (ICD) leads is occasionally observed. We aimed to evaluate the incidence of shock coil interaction and its clinical relevance. METHODS AND RESULTS All ICD patients (646 patients) who came to follow up control in our ICD ambulance between January 1, 2011, and December 31, 2011 in the department of cardiology in Bad Berka hospital were retrospectively evaluated in this study. All baseline demographic, clinical, and procedural characteristics and postoperative chest x ray in postero-anterior and lateral view as well as clinical and ICD follow up data were evaluated. Among 646 patients 42 had multiple ICD leads (6.5%) of whom 36 patients (5.5% of total cohort patients and 85.7% of patients with multiple ICD leads) had shock coil interaction and presented the study group (Group I). The control group (Group II) consisted of 610 patients without coil-coil interaction including patients with single shock lead (604 patients) or patients with multiple leads but without interaction between shock coils (6 patients). Inappropriate anti-tachycardia therapies and RV lead revisions were more frequent in patients with interaction between shock coils (Group I vs Group II: 27.7% and 5.7%; p = 0.049 and 30.6% vs 6.4; p = 0.0001, respectively). CONCLUSIONS Interaction between shock coils may be one of possible causes of lead failure and resulted in inappropriate therapies and subsequent lead revision.
Collapse
|
16
|
2017 HRS expert consensus statement on cardiovascular implantable electronic device lead management and extraction. Heart Rhythm 2017; 14:e503-e551. [PMID: 28919379 DOI: 10.1016/j.hrthm.2017.09.001] [Citation(s) in RCA: 736] [Impact Index Per Article: 105.1] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Indexed: 02/06/2023]
|
17
|
Mulpuru SK, Madhavan M, McLeod CJ, Cha YM, Friedman PA. Cardiac Pacemakers: Function, Troubleshooting, and Management: Part 1 of a 2-Part Series. J Am Coll Cardiol 2017; 69:189-210. [PMID: 28081829 DOI: 10.1016/j.jacc.2016.10.061] [Citation(s) in RCA: 109] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Revised: 10/06/2016] [Accepted: 10/18/2016] [Indexed: 02/06/2023]
Abstract
Advances in cardiac surgery toward the mid-20th century created a need for an artificial means of stimulating the heart muscle. Initially developed as large external devices, technological advances resulted in miniaturization of electronic circuitry and eventually the development of totally implantable devices. These advances continue to date, with the recent introduction of leadless pacemakers. In this first part of a 2-part review, we describe indications, implant-related complications, basic function/programming, common pacemaker-related issues, and remote monitoring, which are relevant to the practicing cardiologist. We provide an overview of magnetic resonance imaging and perioperative management among patients with cardiac pacemakers.
Collapse
Affiliation(s)
- Siva K Mulpuru
- Department of Cardiovascular Diseases, Mayo Clinic, Rochester, Minnesota
| | - Malini Madhavan
- Department of Cardiovascular Diseases, Mayo Clinic, Rochester, Minnesota
| | | | - Yong-Mei Cha
- Department of Cardiovascular Diseases, Mayo Clinic, Rochester, Minnesota
| | - Paul A Friedman
- Department of Cardiovascular Diseases, Mayo Clinic, Rochester, Minnesota.
| |
Collapse
|
18
|
Bonny A, Talle MA, Vaugrenard T, Taieb J, Ngantcha M. Inappropriate implantable cardioverter-defibrillator shocks in Brugada syndrome: Pattern in primary and secondary prevention. Indian Pacing Electrophysiol J 2017; 17:10-15. [PMID: 28401854 PMCID: PMC5357861 DOI: 10.1016/j.ipej.2016.10.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Accepted: 10/21/2016] [Indexed: 11/26/2022] Open
Abstract
Background Inappropriate implantable cardioverter-defibrillator (ICD) shocks is a common complication in Brugada syndrome. However, the incidence in recipients of ICD for primary and secondary prevention is unknown. Method and results We compared the rate of inappropriate shocks in patients with Brugada syndrome that had an ICD for primary and secondary prevention. We studied 51 patients, 86.5% of whom were males. Their mean age at diagnosis was 47 ± 11 years. Eighteen (35%) were asymptomatic, while 25 (49%) experienced syncope prior to implantation. Eight (16%) patients were resuscitated from ventricular fibrillation before implantation. During a mean follow-up of 78 ± 46 months, none of the asymptomatic patients experienced appropriate therapy, whereas 21.6% of symptomatic patients had ≥1 shock. Inappropriate shock occurred in 7 (13.7%) patients, with a mean IS of 6.57 ± 6.94 shocks per patient occurring 16.14 ± 10.38 months after implantation. There was a trend towards higher incidence of inappropriate shock in the asymptomatic group (p = 0.09). The interval from implantation to inappropriate shock occurrence was 13.91 ± 12.98 months. The risk of IS at 3 years was 13.7%, which eventually plateaued over the time. Conclusion Inappropriate shock is common in Brugada syndrome during the early periods after an ICD implantation, and seems to be more likely in asymptomatic patients. This finding may warrant a review of the indications for ICD implantation, especially in the young and apparently healthy population of patients with Brugada syndrome.
Collapse
|
19
|
Kristensen AE, Larsen JM, Nielsen JC, Johansen JB, Haarbo J, Petersen HH, Riahi S. Validation of defibrillator lead performance registry data: insight from the Danish Pacemaker and ICD Register. Europace 2016; 19:1187-1192. [DOI: 10.1093/europace/euw226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2016] [Accepted: 06/27/2016] [Indexed: 11/14/2022] Open
|
20
|
|
21
|
Wilkoff BL, Fauchier L, Stiles MK, Morillo CA, Al-Khatib SM, Almendral J, Aguinaga L, Berger RD, Cuesta A, Daubert JP, Dubner S, Ellenbogen KA, Estes NAM, Fenelon G, Garcia FC, Gasparini M, Haines DE, Healey JS, Hurtwitz JL, Keegan R, Kolb C, Kuck KH, Marinskis G, Martinelli M, McGuire M, Molina LG, Okumura K, Proclemer A, Russo AM, Singh JP, Swerdlow CD, Teo WS, Uribe W, Viskin S, Wang CC, Zhang S. 2015 HRS/EHRA/APHRS/SOLAECE expert consensus statement on optimal implantable cardioverter-defibrillator programming and testing. J Arrhythm 2016; 32:1-28. [PMID: 26949427 PMCID: PMC4759125 DOI: 10.1016/j.joa.2015.12.001] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Key Words
- AF, atrial fibrillation
- ATP, antitachycardia pacing
- Bradycardia mode and rate
- CI, confidence interval
- CL, cycle length
- CRT, cardiac resynchronization therapy
- CRT-D, cardiac resynchronization therapy–defibrillator
- DT, defibrillation testing
- Defibrillation testing
- EEG, electroencephalography
- EGM, electrogram
- HF, heart failure
- HR, hazard ratio
- ICD, implantable cardioverter-defibrillator
- Implantable cardioverter-defibrillator
- LV, left ventricle
- LVEF, left ventricular ejection fraction
- MI, myocardial infarction
- MVP, managed ventricular pacing
- NCDR, National Cardiovascular Data Registry
- NYHA, New York Heart Association
- OR, odds ratio
- PEA, peak endocardial acceleration
- PVC, premature ventricular contraction
- Programming
- RCT, randomized clinical trial
- RV, right ventricle
- S-ICD, subcutaneous implantable cardioverter-defibrillator
- SCD, sudden cardiac death
- SVT, supraventricular tachycardia
- TIA, transient ischemic attack
- Tachycardia detection
- Tachycardia therapy
- VF, ventricular fibrillation
- VT, ventricular tachycardia (Heart Rhythm 2015;0:1–37)
- aCRT, adaptive cardiac resynchronization therapy
Collapse
Affiliation(s)
| | | | | | - Carlos A Morillo
- Department of Medicine, Cardiology Division, McMaster University-Population Health Research Institute, Hamilton, Canada
| | | | - Jesœs Almendral
- Grupo HM Hospitales, Universidad CEU San Pablo, Madrid, Spain
| | | | | | - Alejandro Cuesta
- Servicio de Arritmias, Instituto de Cardiologia Infantil, Montevideo, Uruguay
| | | | - Sergio Dubner
- Clinica y Maternidad Suizo Argentina; De Los Arcos Sanatorio, Buenos Aires, Argentina
| | | | | | | | - Fermin C Garcia
- Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania
| | | | - David E Haines
- William Beaumont Hospital Division of Cardiology, Royal Oak, Michigan
| | - Jeff S Healey
- Department of Medicine, Cardiology Division, McMaster University-Population Health Research Institute, Hamilton, Canada
| | | | | | | | | | | | | | | | - Luis G Molina
- Mexico's National University, Mexico's General Hospital, Mexico City, Mexico
| | - Ken Okumura
- Hirosaki University Graduate School of Medicine, Hirosaki, Aomori, Japan
| | - Alessandro Proclemer
- Azienda Ospedaliero Universitaria S. Maria della Misericordia- Udine, Udine, Italy
| | | | - Jagmeet P Singh
- Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
| | | | - Wee Siong Teo
- National Heart Centre Singapore, Singapore, Singapore
| | - William Uribe
- CES Cardiología and Centros Especializados San Vicente Fundación, Medellín y Rionegro, Colombia
| | - Sami Viskin
- Tel Aviv Sourasky Medical Center and Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | | | - Shu Zhang
- National Center for Cardiovascular Disease and Beijing Fu Wai Hospital, Peking Union Medical College and China Academy of Medical Sciences, Beijing, China
| |
Collapse
|
22
|
Electromagnetic interference in implantable cardioverter defibrillators: present but rare. Clin Res Cardiol 2016; 105:657-665. [DOI: 10.1007/s00392-016-0965-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2015] [Accepted: 01/19/2016] [Indexed: 11/25/2022]
|
23
|
2015 HRS/EHRA/APHRS/SOLAECE expert consensus statement on optimal implantable cardioverter-defibrillator programming and testing. Heart Rhythm 2015; 13:e50-86. [PMID: 26607062 DOI: 10.1016/j.hrthm.2015.11.018] [Citation(s) in RCA: 179] [Impact Index Per Article: 19.9] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2015] [Indexed: 12/12/2022]
|
24
|
Wilkoff BL, Fauchier L, Stiles MK, Morillo CA, Al-Khatib SM, Almendral J, Aguinaga L, Berger RD, Cuesta A, Daubert JP, Dubner S, Ellenbogen KA, Estes NAM, Fenelon G, Garcia FC, Gasparini M, Haines DE, Healey JS, Hurtwitz JL, Keegan R, Kolb C, Kuck KH, Marinskis G, Martinelli M, Mcguire M, Molina LG, Okumura K, Proclemer A, Russo AM, Singh JP, Swerdlow CD, Teo WS, Uribe W, Viskin S, Wang CC, Zhang S. 2015 HRS/EHRA/APHRS/SOLAECE expert consensus statement on optimal implantable cardioverter-defibrillator programming and testing. Europace 2015; 18:159-83. [PMID: 26585598 DOI: 10.1093/europace/euv411] [Citation(s) in RCA: 97] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
|
25
|
|
26
|
Kollmann DT, Swerdlow CD, Kroll MW, Seifert GJ, Lichter PA, Hedin DS, Panescu D. ICD lead failure detection in chronic soaked leads. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2015; 2015:5667-5671. [PMID: 26737578 DOI: 10.1109/embc.2015.7319678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Abrasion-induced insulation breach is a common failure mode of silicone-body, transvenous, implantable cardioverter defibrillator leads. It is caused either by external compression or internal motion of conducting cables. The present method of monitoring lead integrity measures low frequency conductor impedance. It cannot detect insulation failures until both the silicone lead body and inner fluoropolymer insulation have been breached completely, exposing conductors directly to blood or tissue. Even then the resistance changes are usually swamped by the baseline values. Thus the first clinical presentation may be either failure to deliver a life-saving shock or painful, inappropriate shocks in normal rhythm. We have previously presented a method for identifying early lead failure based on high frequency transmission line impedance measurements. That work used fresh leads in a liquid simulation bath; we have now demonstrated similar effects in leads soaked for 32 days and hence with saline-saturated silicone lead bodies.
Collapse
|
27
|
Swerdlow CD, Asirvatham SJ, Ellenbogen KA, Friedman PA. Troubleshooting implanted cardioverter defibrillator sensing problems I. Circ Arrhythm Electrophysiol 2015; 7:1237-61. [PMID: 25516582 DOI: 10.1161/circep.114.002344] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Charles D Swerdlow
- From the Cedars-Sinai Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA (C.D.S.); Division of Cardiology, Mayo Clinic, Rochester, MN (S.J.A., P.A.F.); and Division of Cardiology, Virginia Commonwealth University School of Medicine, Richmond, VA (K.A.E.).
| | - Samuel J Asirvatham
- From the Cedars-Sinai Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA (C.D.S.); Division of Cardiology, Mayo Clinic, Rochester, MN (S.J.A., P.A.F.); and Division of Cardiology, Virginia Commonwealth University School of Medicine, Richmond, VA (K.A.E.)
| | - Kenneth A Ellenbogen
- From the Cedars-Sinai Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA (C.D.S.); Division of Cardiology, Mayo Clinic, Rochester, MN (S.J.A., P.A.F.); and Division of Cardiology, Virginia Commonwealth University School of Medicine, Richmond, VA (K.A.E.)
| | - Paul A Friedman
- From the Cedars-Sinai Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA (C.D.S.); Division of Cardiology, Mayo Clinic, Rochester, MN (S.J.A., P.A.F.); and Division of Cardiology, Virginia Commonwealth University School of Medicine, Richmond, VA (K.A.E.)
| |
Collapse
|
28
|
Kollmann DT, Swerdlow CD, Kroll MW, Seifert GJ, Lichter PA. ICD lead failure detection through high frequency impedance. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2015; 2014:6487-92. [PMID: 25571482 DOI: 10.1109/embc.2014.6945114] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Abrasion-induced insulation breach is a common failure mode of silicone-body, transvenous, implantable cardioverter defibrillator leads. It is caused either by external compression or internal motion of conducting cables. The present method of monitoring lead integrity measures low frequency conductor impedance. It cannot detect insulation failures until both the silicone lead body and inner fluoropolymer insulation have been breached completely, exposing conductors directly to blood or tissue. Thus the first clinical presentation may be either failure to deliver a life-saving shock or painful, inappropriate shocks in normal rhythm. We present a new method for identifying lead failure based on high frequency impedance measurements. This method was evaluated in 3D electromagnetic simulation and bench testing to identify insulation defects in the St. Jude Medical Riata® lead, which is prone to insulation breach.
Collapse
|
29
|
Nonsustained lead noise alert associated with repeating pattern of signals on the ventricular channel: Is there true concern for lead malfunction? Heart Rhythm 2014; 11:526-8. [DOI: 10.1016/j.hrthm.2013.11.029] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2013] [Indexed: 11/17/2022]
|