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Qian S, Monaci S, Mendonca-Costa C, Campos F, Gemmell P, Zaidi HA, Rajani R, Whitaker J, Rinaldi CA, Bishop MJ. Additional coils mitigate elevated defibrillation threshold in right-sided implantable cardioverter defibrillator generator placement: a simulation study. Europace 2023; 25:euad146. [PMID: 37314196 PMCID: PMC10265967 DOI: 10.1093/europace/euad146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Accepted: 05/13/2023] [Indexed: 06/15/2023] Open
Abstract
AIMS The standard implantable cardioverter defibrillator (ICD) generator (can) is placed in the left pectoral area; however, in certain circumstances, right-sided cans may be required which may increase defibrillation threshold (DFT) due to suboptimal shock vectors. We aim to quantitatively assess whether the potential increase in DFT of right-sided can configurations may be mitigated by alternate positioning of the right ventricular (RV) shocking coil or adding coils in the superior vena cava (SVC) and coronary sinus (CS). METHODS AND RESULTS A cohort of CT-derived torso models was used to assess DFT of ICD configurations with right-sided cans and alternate positioning of RV shock coils. Efficacy changes with additional coils in the SVC and CS were evaluated. A right-sided can with an apical RV shock coil significantly increased DFT compared to a left-sided can [19.5 (16.4, 27.1) J vs. 13.3 (11.7, 19.9) J, P < 0.001]. Septal positioning of the RV coil led to a further DFT increase when using a right-sided can [26.7 (18.1, 36.1) J vs. 19.5 (16.4, 27.1) J, P < 0.001], but not a left-sided can [12.1 (8.1, 17.6) J vs. 13.3 (11.7, 19.9) J, P = 0.099). Defibrillation threshold of a right-sided can with apical or septal coil was reduced the most by adding both SVC and CS coils [19.5 (16.4, 27.1) J vs. 6.6 (3.9, 9.9) J, P < 0.001, and 26.7 (18.1, 36.1) J vs. 12.1 (5.7, 13.5) J, P < 0.001]. CONCLUSION Right-sided, compared to left-sided, can positioning results in a 50% increase in DFT. For right-sided cans, apical shock coil positioning produces a lower DFT than septal positions. Elevated right-sided can DFTs may be mitigated by utilizing additional coils in SVC and CS.
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Affiliation(s)
- Shuang Qian
- Department of Biomedical Engineering, School of Imaging Sciences and Biomedical Engineering, Kings College London, 4th North Wing, St Thomas’ Hospital, London SE1 7EH, UK
| | - Sofia Monaci
- Department of Biomedical Engineering, School of Imaging Sciences and Biomedical Engineering, Kings College London, 4th North Wing, St Thomas’ Hospital, London SE1 7EH, UK
| | - Caroline Mendonca-Costa
- Department of Biomedical Engineering, School of Imaging Sciences and Biomedical Engineering, Kings College London, 4th North Wing, St Thomas’ Hospital, London SE1 7EH, UK
| | - Fernando Campos
- Department of Biomedical Engineering, School of Imaging Sciences and Biomedical Engineering, Kings College London, 4th North Wing, St Thomas’ Hospital, London SE1 7EH, UK
| | - Philip Gemmell
- Department of Biomedical Engineering, School of Imaging Sciences and Biomedical Engineering, Kings College London, 4th North Wing, St Thomas’ Hospital, London SE1 7EH, UK
| | - Hassan A Zaidi
- Department of Biomedical Engineering, School of Imaging Sciences and Biomedical Engineering, Kings College London, 4th North Wing, St Thomas’ Hospital, London SE1 7EH, UK
| | - Ronak Rajani
- Department of Cardiology, Guy’s and St Thomas’ Hospital, Westminster Bridge Rd, London SE1 7EH, UK
| | - John Whitaker
- Department of Biomedical Engineering, School of Imaging Sciences and Biomedical Engineering, Kings College London, 4th North Wing, St Thomas’ Hospital, London SE1 7EH, UK
- Department of Cardiology, Guy’s and St Thomas’ Hospital, Westminster Bridge Rd, London SE1 7EH, UK
| | - Christopher A Rinaldi
- Department of Biomedical Engineering, School of Imaging Sciences and Biomedical Engineering, Kings College London, 4th North Wing, St Thomas’ Hospital, London SE1 7EH, UK
- Department of Cardiology, Guy’s and St Thomas’ Hospital, Westminster Bridge Rd, London SE1 7EH, UK
| | - Martin J Bishop
- Department of Biomedical Engineering, School of Imaging Sciences and Biomedical Engineering, Kings College London, 4th North Wing, St Thomas’ Hospital, London SE1 7EH, UK
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2
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Postcardiac injury syndrome after cardiac implantable electronic device implantation. Herz 2020; 45:696-702. [PMID: 32170340 PMCID: PMC7581580 DOI: 10.1007/s00059-020-04910-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2019] [Revised: 01/18/2020] [Accepted: 02/17/2020] [Indexed: 11/23/2022]
Abstract
Background Postcardiac injury syndrome (PCIS) is an inflammatory complication that derives from injury to the epicardium, myocardium, or endocardium. It occurs after trauma, myocardial infarction, percutaneous coronary intervention, cardiac surgery, intracardiac ablation, and implantation of cardiac implantable electronic device (CIED). In this study we assessed the incidence of PCIS after CIED implantation and its possible risk factors. Material and methods All patients who received CIED implantation at Heidelberg University Hospital between 2000 and 2014 were evaluated (n = 4989 patients). Clinical data including age, sex, underlying cardiac disease, type of implanted CIED, location of electrode implantation, clinical symptoms, time of symptom onset of PCIS, therapy, and outcome were extracted and analyzed. Results We identified 19 cases of PCIS in 4989 patients, yielding an incidence of 0.38%. The age of patients with PCIS ranged from 39 to 86 years. Dilated cardiomyopathy (DCM) as underlying cardiac disease and right atrial (RA) lead implantation had a significant association with occurrence of PCIS (p = 0.045 in DCM and p < 0.001 in RA lead implantation). Dyspnea, chest pain, dry cough, and fever were the most frequently reported symptoms in patients with PCIS. Pericardial and pleura effusion as well as elevated C‑reactive protein (CRP), increased erythrocyte sedimentation rate (ESR), and leukocytosis were the most common findings. Conclusion To the best of our knowledge, this is the largest cohort evaluating the incidence of PCIS after CIED implantation. The data show that PCIS is a rare complication after CIED implantation and occurs more frequently in patients with DCM and those with RA lead implantation. Although rare and mostly benign, PCIS can lead to potentially lethal complications and physicians must be aware of its symptoms. Electronic supplementary material The online version of this article (10.1007/s00059-020-04910-6) contains supplementary material, which is available to authorized users.
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3
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GVK SS, Liu Z, Tan M. Fatigue behavior in Co–Cr–Ni–Mo medical wires drawn with different drawing practices. J Mech Behav Biomed Mater 2019; 99:134-152. [DOI: 10.1016/j.jmbbm.2019.07.027] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Revised: 05/05/2019] [Accepted: 07/22/2019] [Indexed: 10/26/2022]
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4
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Neuzner J, Hohnloser SH, Kutyifa V, Glikson M, Dietze T, Mabo P, Vinolas X, Kautzner J, O'Hara G, Lawo T, Brachmann J, VanErven L, Gadler F, Appl U, Wang J, Connolly SJ, Healey JS. Effectiveness of single- vs dual-coil implantable defibrillator leads: An observational analysis from the SIMPLE study. J Cardiovasc Electrophysiol 2019; 30:1078-1085. [PMID: 30945798 DOI: 10.1111/jce.13943] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 03/08/2019] [Accepted: 04/01/2019] [Indexed: 11/30/2022]
Abstract
INTRODUCTION Dual-coil leads (DC-leads) were the standard of choice since the first nonthoracotomy implantable cardioverter/defibrillator (ICD). We used contemporary data to determine if DC-leads offer any advantage over single-coil leads (SC-leads), in terms of defibrillation efficacy, safety, clinical outcome, and complication rates. METHODS AND RESULTS In the Shockless IMPLant Evaluation study, 2500 patients received a first implanted ICD and were randomized to implantation with or without defibrillation testing. Two thousand and four hundred seventy-five patients received SC-coil or DC-coil leads (SC-leads in 1025/2475 patients; 41.4%). In patients who underwent defibrillation testing (n = 1204), patients with both lead types were equally likely to achieve an adequate defibrillation safety margin (88.8% vs 91.2%; P = 0.16). There was no overall effect of lead type on the primary study endpoint of "failed appropriate shock or arrhythmic death" (adjusted HR 1.18; 95% CI, 0.86-1.62; P = 0.300), and on all-cause mortality (SC-leads: 5.34%/year; DC-leads: 5.48%/year; adjusted HR 1.16; 95% CI, 0.94-1.43; P = 0.168). However, among patients without prior heart failure (HF), and SC-leads had a significantly higher risk of failed appropriate shock or arrhythmic death (adjusted HR 7.02; 95% CI, 2.41-20.5). There were no differences in complication rates. CONCLUSION In this nonrandomized evaluation, there was no overall difference in defibrillation efficacy, safety, outcome, and complication rates between SC-leads and DC-leads. However, DC-leads were associated with a reduction in the composite of failed appropriate shock or arrhythmic death in the subgroup of non-HF patients. Considering riskier future lead extraction with DC-leads, SC-leads appears to be preferable in the majority of patients.
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Affiliation(s)
| | - Stefan H Hohnloser
- Department of Cardiology, University Hospital Frankfurt, Goethe University, Frankfurt, Germany
| | - Valentina Kutyifa
- Semmelweis University, Budapest, Hungary.,University of Rochester Medical Center, Rochester, New York
| | - Michael Glikson
- Leviev Heart Center, Sheba Medical Center, Tel Hashomer, Israel
| | | | | | | | - Josef Kautzner
- Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Gilles O'Hara
- Institute Universitaire de Cardiologie et de Pneumologie de, Quebec, QC, Canada
| | - Thomas Lawo
- Elisabeth Krankenhaus, Recklinghausen, Germany
| | | | | | | | - Ursula Appl
- Boston Scientific, Minneapolis, Minnesota.,Boston Scientific, Brussels, Belgium
| | - Jia Wang
- Population Health Research Institute, Hamilton, Canada
| | | | - Jeff S Healey
- Population Health Research Institute, Hamilton, Canada.,Mc Master University, Hamilton, Canada
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5
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Yu Z, Wu Y, Qin S, Wang J, Chen X, Chen R, Su Y, Ge J. Comparison of single-coil lead versus dual-coil lead of implantable cardioverter defibrillator on lead-related venous complications in a canine model. J Interv Card Electrophysiol 2018; 52:195-201. [PMID: 29572716 DOI: 10.1007/s10840-018-0312-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Accepted: 01/03/2018] [Indexed: 10/17/2022]
Abstract
PURPOSE Dual- coil lead (DCL) of implantable cardioverter defibrillator (ICD) is preferred clinically in patients. However, it is related to higher risk of venous stenosis and thrombosis. The present study was done to compare the fibrosis and extraction of the leads between the single-coil lead (SCL) and DCL in animal models. METHODS This was a chronic animal study with a follow-up duration of 6 months. Twenty mongrel dogs were randomly divided into DCL group or SCL group. Venography was performed before the sacrifice to evaluate the venous stenosis in vivo. The maximum pulling-out tension of the ICD lead was measured by a tensometer. Hematoxylin-eosin stain and toluidine blue O stain were applied to show the pathological changes of the superior vena cava (SVC) to evaluate the fibrosis and the thickness of the SVC adjacent to the leads. RESULTS The DCL group showed higher incidence of venous stenosis (OR = 31.5; 95% CI, 2.35-422.3; p = 0.005). It revealed increased tension to extract the leads in the DCL group (5.96 ± 1.86 vs. 3.68 ± 1.46 N, p = 0.027). The difference of venous wall thickness of SVC was 4.3 ± 0.3 fold-changes between two groups (p = 0.007). Moreover, the degree of venous wall fibrosis in DCL group was more serious than that it in SCL group (3.61 ± 1.26 vs. 1.08 ± 1.35 mm2, p = 0.015). CONCLUSION The DCL was proved to increase thrombosis, fibrosis, and stenosis in the SVC. Likewise, the DCL was mechanically harder to be extracted than the SCL. Our study showed that lead-related complications of the DCLs were higher than those of the SCLs regardless of the equal defibrillation thresholds between them. Results of the present study would help to choose the proper lead which could be removed.
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Affiliation(s)
- Ziqing Yu
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai, 200032, People's Republic of China.,Shanghai Institute of Medical Imaging, Shanghai, 200032, People's Republic of China.,Shanghai Medical College, Fudan University, Shanghai, 200032, People's Republic of China
| | - Yuan Wu
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai, 200032, People's Republic of China
| | - Shengmei Qin
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai, 200032, People's Republic of China.,Shanghai Institute of Medical Imaging, Shanghai, 200032, People's Republic of China
| | - Jingfeng Wang
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai, 200032, People's Republic of China.,Shanghai Institute of Medical Imaging, Shanghai, 200032, People's Republic of China
| | - Xueying Chen
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai, 200032, People's Republic of China.,Shanghai Institute of Medical Imaging, Shanghai, 200032, People's Republic of China
| | - Ruizhen Chen
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai, 200032, People's Republic of China.,Department of Cardiovascular Diseases, Key Laboratory of Viral Heart Diseases, Ministry of Public Health, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai, 200032, People's Republic of China
| | - Yangang Su
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai, 200032, People's Republic of China. .,Shanghai Institute of Medical Imaging, Shanghai, 200032, People's Republic of China.
| | - Junbo Ge
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai, 200032, People's Republic of China.
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6
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Markewitz A. [Annual report 2015 of the German cardiac pacemaker and defibrillator register-Part 2: implantable cardioverter-defibrillators : Cardiac pacemaker working group at the IQTIG - Institute for quality assurance and transparency in health care]. Herzschrittmacherther Elektrophysiol 2018; 29:100-115. [PMID: 29313141 DOI: 10.1007/s00399-017-0547-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Affiliation(s)
- A Markewitz
- , Am Goldberg 24, 56170, Bendorf, Deutschland.
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7
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Bänsch D, Bonnemeier H, Brandt J, Bode F, Svendsen JH, Ritter O, Aring J, Gutleben KJ, Schneider R, Felk A, Hauser T, Buchholz A, Hindricks G, Wegscheider K. Shock efficacy of single and dual coil electrodes—new insights from the NORDIC ICD Trial. Europace 2017; 20:971-978. [DOI: 10.1093/europace/eux075] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2016] [Accepted: 02/28/2017] [Indexed: 11/12/2022] Open
Affiliation(s)
- Dietmar Bänsch
- Heart Center Rostock, Department of Internal Medicine I, Divisions of Cardiology, University Hospital Rostock, Ernst-Heydemann-Str. 6, 18057 Rostock, Germany
| | - Hendrik Bonnemeier
- Department of Internal Medicine III Cardiology and Angiology, University Hospital Schleswig-Holstein, Campus Kiel, Arnold-Heller-Straβe 3, 24105 Kiel, Germany
| | - Johan Brandt
- Arrhythmia Department, Skane University Hospital, SE-221 85 Lund, Sweden
| | - Frank Bode
- Medical Clinic II Cardiology, Angiology and Intensive Care Medicine, University Hospital Schleswig-Holstein, Campus Lübeck, Ratzeburger Allee 160, 23538 Lübeck, Germany
| | - Jesper Hastrup Svendsen
- Heart Center, Department of Cardiology, Rigshospitalet Copenhagen University Hospital, Copenhagen and Danish Arrhythmia Research Centre, University of Copenhagen, Blegdamsvej 9, 2100 København Ø, Denmark
| | - Oliver Ritter
- Department Cardiology, University Hospital Würzburg, Oberdürrbacher Str. 6, 97080 Würzburg, Germany
| | - Johannes Aring
- Department of Internal Medicine I, Divisions of Cardiology, Internal and Intersive Care Medicine, Hospital Leverkusen, Am Gesundheitspark 11, 51375 Leverkusen, Germany
| | - Klaus-Jürgen Gutleben
- Heart and Diabetes Center North Rhine-Westphalia, University Clinic, Ruhr-University Bochum, Georgstr. 11, 32545 Bad Oeynhausen, Germany
| | - Ralph Schneider
- Heart Center Rostock, Department of Internal Medicine I, Divisions of Cardiology, University Hospital Rostock, Ernst-Heydemann-Str. 6, 18057 Rostock, Germany
| | | | - Tino Hauser
- Biotronik, Woermannkehre 1, 12359 Berlin, Germany
| | - Anika Buchholz
- Department of Medical Biometry and Epidemiology, University Medical Center Hamburg Eppendorf, Martinistr. 52, 20246 Hamburg, Germany
| | - Gerhard Hindricks
- Department of Electrophysiology, Heart Center Leipzig, University of Leipzig, Strümpellstr. 39, 04289 Leipzig, Germany
| | - Karl Wegscheider
- Department of Medical Biometry and Epidemiology, University Medical Center Hamburg Eppendorf, Martinistr. 52, 20246 Hamburg, Germany
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8
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Affiliation(s)
- A Markewitz
- Direktor der Abt. XVII - Klinik für Herz- und Gefäßchirurgie, Bundeswehrzentralkrankenhaus, Rübenacher Str. 170, 56072, Koblenz, Deutschland.
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9
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Sunderland N, Kaura A, Murgatroyd F, Dhillon P, Scott PA. Outcomes with single-coil versus dual-coil implantable cardioverter defibrillators: a meta-analysis. Europace 2017; 20:e21-e29. [DOI: 10.1093/europace/euw438] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Accepted: 12/20/2016] [Indexed: 11/13/2022] Open
Affiliation(s)
- Nicholas Sunderland
- Department of Cardiology, King's College Hospital NHS Foundation Trust, London, UK
| | - Amit Kaura
- Department of Cardiology, King's College Hospital NHS Foundation Trust, London, UK
| | - Francis Murgatroyd
- Department of Cardiology, King's College Hospital NHS Foundation Trust, London, UK
| | - Para Dhillon
- Department of Cardiology, King's College Hospital NHS Foundation Trust, London, UK
| | - Paul A Scott
- Department of Cardiology, King's College Hospital NHS Foundation Trust, London, UK
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10
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Kardiale implantierbare elektronische Systeme. ZEITSCHRIFT FUR HERZ THORAX UND GEFASSCHIRURGIE 2016. [DOI: 10.1007/s00398-015-0055-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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11
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Hsu JC, Saxon LA, Jones PW, Wehrenberg S, Marcus GM. Utilization trends and clinical outcomes in patients implanted with a single- vs a dual-coil implantable cardioverter-defibrillator lead: Insights from the ALTITUDE Study. Heart Rhythm 2015; 12:1770-5. [DOI: 10.1016/j.hrthm.2015.04.030] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2015] [Indexed: 11/25/2022]
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12
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Nisam S, Reddy S. The story of ... a lead. Europace 2015; 17:677-88. [DOI: 10.1093/europace/euu391] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2014] [Accepted: 12/03/2014] [Indexed: 11/13/2022] Open
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13
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Post cardiac injury syndrome after initially uncomplicated CRT-D implantation: a case report and a systematic review. Clin Res Cardiol 2014; 103:781-9. [DOI: 10.1007/s00392-014-0716-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/26/2013] [Accepted: 04/11/2014] [Indexed: 11/26/2022]
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14
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Possible spontaneous PFO closure after thrombus trapped in PFO. Clin Res Cardiol 2014; 103:333-5. [DOI: 10.1007/s00392-013-0655-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2013] [Accepted: 12/12/2013] [Indexed: 10/25/2022]
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15
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Not left ventricular lead position, but the extent of immediate asynchrony reduction predicts long-term response to cardiac resynchronization therapy. Clin Res Cardiol 2014; 103:457-66. [DOI: 10.1007/s00392-014-0672-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2013] [Accepted: 01/14/2014] [Indexed: 10/25/2022]
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16
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Low efficacy of cardioversion of persistent atrial fibrillation with the implantable cardioverter-defibrillator. Neth Heart J 2013; 21:548-53. [PMID: 24092363 PMCID: PMC3833915 DOI: 10.1007/s12471-013-0474-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
AIMS Atrial fibrillation (AF) and heart failure are conditions that often coexist. Consequently, many patients with an implantable cardioverter-defibrillator (ICD) present with AF. We evaluated the effectiveness of internal cardioversion of AF in patients with an ICD. METHODS Retrospectively, we included 27 consecutive ICD patients with persistent AF who underwent internal cardioversion using the ICD. When ICD cardioversion failed, external cardioversion was performed. RESULTS Patients were predominantly male (89 %) with a mean (SD) age of 65 ± 9 years and left ventricular ejection fraction of 36 ± 17 %. Only nine (33 %) patients had successful internal cardioversion after one, two or three shocks. The remaining 18 patients underwent external cardioversion after they failed internal cardioversion, which resulted in sinus rhythm in all. A smaller left atrial volume (99 ± 36 ml vs. 146 ± 44 ml; p = 0.019), a longer right atrial cycle length (227 (186-255) vs. 169 (152-183) ms, p = 0.030), a shorter total AF history (2 (0-17) months vs. 40 (5-75) months, p = 0.025) and dual-coil ICD shock (75 % vs. 26 %, p = 0.093) were associated with successful ICD cardioversion. CONCLUSION Internal cardioversion of AF in ICD patients has a low success rate but may be attempted in those with small atria, a long right atrial fibrillatory cycle length and a short total AF history, especially when a dual-coil ICD is present. Otherwise, it seems reasonable to prefer external over internal cardioversion when it comes to termination of persistent AF.
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17
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GILLIS ANNEM. Single or Dual Coil Defibrillation Leads? Let's Keep it Simple! J Cardiovasc Electrophysiol 2013; 24:1253-4. [DOI: 10.1111/jce.12229] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- ANNE M. GILLIS
- Department of Cardiac Sciences, University of Calgary; Libin Cardiovascular Institute of Alberta; Calgary Alberta Canada
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18
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BAROLD SS, HERWEG BENGT. Are Dual-Coil ICD Leads Obsolete? Pacing Clin Electrophysiol 2013; 36:923-5. [DOI: 10.1111/pace.12192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2012] [Revised: 03/30/2013] [Accepted: 04/10/2013] [Indexed: 11/29/2022]
Affiliation(s)
- S. S. BAROLD
- From the Florida Heart Rhythm Institute; Tampa; Florida
| | - BENGT HERWEG
- From the Florida Heart Rhythm Institute; Tampa; Florida
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Kutyifa V, Huth Ruwald AC, Aktas MK, Jons C, McNitt S, Polonsky B, Geller L, Merkely B, Moss AJ, Zareba W, Bloch Thomsen PE. Clinical impact, safety, and efficacy of single- versus dual-coil ICD leads in MADIT-CRT. J Cardiovasc Electrophysiol 2013; 24:1246-52. [PMID: 23889863 DOI: 10.1111/jce.12219] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2013] [Revised: 05/26/2013] [Accepted: 05/28/2013] [Indexed: 11/30/2022]
Abstract
BACKGROUND Current data on efficacy, safety and impact on clinical outcome of single- versus dual-coil implantable cardioverter-defibrillator (ICD) leads are limited and contradictory. METHODS Defibrillation threshold (DFT) at implantation and first shock efficacy were compared in patients implanted with single- versus dual-coil ICD leads in MADIT-CRT. The risk for atrial tachyarrhythmias and all-cause mortality were evaluated. Short- (< 30 days after the implantation) and long-term (throughout the entire study duration) complications were assessed. RESULTS Patients with dual-coil ICD leads had significantly lower DFTs compared to patients with single-coil ICD leads (17.6 ± 5.8 J vs 19.4 ± 6.1 J, P < 0.001). First shock efficacy was similar among patients with dual and single-coil ICD leads (89.6% vs 92.3%, P = 1.00). When comparing patients with dual versus single-coil ICD leads, there was no difference in the risk of atrial tachyarrhythmias (HR = 1.57, 95% CI: 0.81-3.02, P = 0.18), or in the risk of all-cause mortality (HR = 1.10, 95% CI: 0.58-2.07, P = 0.77). Patients implanted with single- or dual-coil ICD lead had similar short and long-term complication rates (short-term HR = 0.96, 95% CI: 0.56-1.65, P = 0.88, long-term procedure-related HR = 0.99, 95% CI: 0.62-1.59, P = 1.00, long-term ICD lead related: HR = 1.2, 95% CI: 0.5-2.9, P = 0.68) during the mean follow-up of 3.3 years. CONCLUSIONS Patients with single-coil ICD leads have slightly higher DFTs compared to those with dual-coil leads, but the efficacy, safety, and clinical impact on atrial tachyarrhythmias, and mortality is similar. Implantation of single-coil ICD leads may be favorable in most patients.
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Affiliation(s)
- Valentina Kutyifa
- University of Rochester Medical Center, Heart Research Follow-Up Program, Rochester, NY, USA; Semmelweis University Heart Center, Budapest, Hungary
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Epstein LM, Love CJ, Wilkoff BL, Chung MK, Hackler JW, Bongiorni MG, Segreti L, Carrillo RG, Baltodano P, Fischer A, Kennergren C, Viklund R, Mittal S, Arshad A, Ellenbogen KA, John RM, Maytin M. Superior Vena Cava Defibrillator Coils Make Transvenous Lead Extraction More Challenging and Riskier. J Am Coll Cardiol 2013; 61:987-9. [DOI: 10.1016/j.jacc.2012.12.014] [Citation(s) in RCA: 394] [Impact Index Per Article: 35.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/20/2012] [Revised: 12/02/2012] [Accepted: 12/09/2012] [Indexed: 11/25/2022]
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