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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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Qian S, Connolly A, Mendonca-Costa C, Campos F, Rodero C, Whitaker J, Rinaldi CA, Bishop MJ. Optimization of anti-tachycardia pacing efficacy through scar-specific delivery and minimization of re-initiation: a virtual study on a cohort of infarcted porcine hearts. Europace 2023; 25:716-725. [PMID: 36197749 PMCID: PMC9935023 DOI: 10.1093/europace/euac165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Accepted: 08/31/2022] [Indexed: 11/15/2022] Open
Abstract
AIMS Anti-tachycardia pacing (ATP) is a reliable electrotherapy to painlessly terminate ventricular tachycardia (VT). However, ATP is often ineffective, particularly for fast VTs. The efficacy may be enhanced by optimized delivery closer to the re-entrant circuit driving the VT. This study aims to compare ATP efficacy for different delivery locations with respect to the re-entrant circuit, and further optimize ATP by minimizing failure through re-initiation. METHODS AND RESULTS Seventy-three sustained VTs were induced in a cohort of seven infarcted porcine ventricular computational models, largely dominated by a single re-entrant pathway. The efficacy of burst ATP delivered from three locations proximal to the re-entrant circuit (septum) and three distal locations (lateral/posterior left ventricle) was compared. Re-initiation episodes were used to develop an algorithm utilizing correlations between successive sensed electrogram morphologies to automatically truncate ATP pulse delivery. Anti-tachycardia pacing was more efficacious at terminating slow compared with fast VTs (65 vs. 46%, P = 0.000039). A separate analysis of slow VTs showed that the efficacy was significantly higher when delivered from distal compared with proximal locations (distal 72%, proximal 59%), being reversed for fast VTs (distal 41%, proximal 51%). Application of our early termination detection algorithm (ETDA) accurately detected VT termination in 79% of re-initiated cases, improving the overall efficacy for proximal delivery with delivery inside the critical isthmus (CI) itself being overall most effective. CONCLUSION Anti-tachycardia pacing delivery proximal to the re-entrant circuit is more effective at terminating fast VTs, but less so slow VTs, due to frequent re-initiation. Attenuating re-initiation, through ETDA, increases the efficacy of delivery within the CI for all VTs.
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Affiliation(s)
- Shuang Qian
- Department of Biomedical Engineering, School of Imaging Sciences and Biomedical Engineering, Kings College London, London, UK
| | | | - Caroline Mendonca-Costa
- Department of Biomedical Engineering, School of Imaging Sciences and Biomedical Engineering, Kings College London, London, UK
| | - Fernando Campos
- Department of Biomedical Engineering, School of Imaging Sciences and Biomedical Engineering, Kings College London, London, UK
| | - Cristobal Rodero
- Department of Biomedical Engineering, School of Imaging Sciences and Biomedical Engineering, Kings College London, London, UK
| | - John Whitaker
- Department of Biomedical Engineering, School of Imaging Sciences and Biomedical Engineering, Kings College London, London, UK
- Department of Cardiology, Guy’s and St Thomas’ Hospital, London, UK
| | - Christopher A Rinaldi
- Department of Biomedical Engineering, School of Imaging Sciences and Biomedical Engineering, Kings College London, London, UK
- Department of Cardiology, Guy’s and St Thomas’ Hospital, London, UK
| | - Martin J Bishop
- Department of Biomedical Engineering, School of Imaging Sciences and Biomedical Engineering, Kings College London, London, UK
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Kardiale elektronische „devices“ 2021. ZEITSCHRIFT FUR HERZ THORAX UND GEFASSCHIRURGIE 2021. [DOI: 10.1007/s00398-021-00470-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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4
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Keiler J, Meinel FG, Ortak J, Weber MA, Wree A, Streckenbach F. Morphometric Characterization of Human Coronary Veins and Subvenous Epicardial Adipose Tissue-Implications for Cardiac Resynchronization Therapy Leads. Front Cardiovasc Med 2021; 7:611160. [PMID: 33426007 PMCID: PMC7793918 DOI: 10.3389/fcvm.2020.611160] [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: 09/28/2020] [Accepted: 11/16/2020] [Indexed: 11/13/2022] Open
Abstract
Subvenous epicardial fat tissue (SEAT), which acts as an electrical insulation, and the venous diameter (VD) both constitute histomorphological challenges for optimal application and lead design in cardiac synchronization therapy (CRT). In this study, we characterized the morphology of human coronary veins to improve the technical design of future CRT systems and to optimize the application of CRT leads. We retrospectively analyzed data from cardiac computed tomography (CT) of 53 patients and did studies of 14 human hearts using the postmortem freeze section technique and micro CT. Morphometric parameters (tributary distances, offspring angles, luminal VD, and SEAT thickness) were assessed. The left posterior ventricular vein (VVSP) had a mean proximal VD of 4.0 ± 1.4 mm, the left marginal vein (VMS) of 3.2 ± 1.5 mm and the anterior interventricular vein (VIA) of 3.9 ± 1.3 mm. More distally (5 cm), VDs decreased to 2.4 ± 0.6 mm, 2.3 ± 0.7 mm, and 2.4 ± 0.6 mm, respectively. In their proximal portions (15 mm), veins possessed mean SEAT thicknesses of 3.2 ± 2.4 (VVSP), 3.4 ± 2.4 mm (VMS), and 4.2 ± 2.8 mm (VIA), respectively. More distally (20-70 mm), mean SEAT thicknesses decreased to alternating low levels of 1.3 ± 1.1 mm (VVSP), 1.7 ± 1.1 mm (VMS), and 4.3 ± 2.6 mm (VIA), respectively. In contrast to the VD, SEAT thicknesses alternated along the further distal vein course and did not display a continuous decrease. Besides the CRT responsiveness of different areas of the LV myocardium, SEAT is a relevant electrophysiological factor in CRT, potentially interfering with sensing and pacing. A sufficient VD is crucial for successful CRT lead placement. Measurements revealed a trend toward greater SEAT thickness for the VIA compared to VVSP and VMS, suggesting a superior signal-to-noise-ratio in VVSP and VMS.
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Affiliation(s)
- Jonas Keiler
- Department of Anatomy, Rostock University Medical Center, Rostock, Germany
| | - Felix G Meinel
- Institute of Diagnostic and Interventional Radiology, Pediatric Radiology and Neuroradiology, Rostock University Medical Center, Rostock, Germany
| | - Jasmin Ortak
- Rhythmology and Clinical Electrophysiology, Divisions of Cardiology, Rostock University Medical Center, Rostock, Germany
| | - Marc-André Weber
- Institute of Diagnostic and Interventional Radiology, Pediatric Radiology and Neuroradiology, Rostock University Medical Center, Rostock, Germany
| | - Andreas Wree
- Department of Anatomy, Rostock University Medical Center, Rostock, Germany
| | - Felix Streckenbach
- Institute of Diagnostic and Interventional Radiology, Pediatric Radiology and Neuroradiology, Rostock University Medical Center, Rostock, Germany.,Center for Transdisciplinary Neurosciences Rostock (CTNR), Rostock University Medical Center, Rostock, Germany
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Keiler J, Schulze M, Dreger R, Springer A, Öner A, Wree A. Quantitative and Qualitative Assessment of Adhesive Thrombo-Fibrotic Lead Encapsulations (TFLE) of Pacemaker and ICD Leads in Arrhythmia Patients-A Post Mortem Study. Front Cardiovasc Med 2020; 7:602179. [PMID: 33330664 PMCID: PMC7734031 DOI: 10.3389/fcvm.2020.602179] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Accepted: 11/09/2020] [Indexed: 12/13/2022] Open
Abstract
The demand for cardiac implantable electronic devices for arrhythmia therapy is still unabated and rising. Despite onward optimizations, lead-related problems such as infections or fractures often necessitate lead extraction. Due to adhesive thrombo-fibrotic lead encapsulations (TFLE) transvenous lead extraction is challenging and risky. However, knowledge on TFLEs and possible correlations with technical lead parameters and dwelling time (DT) were hitherto insufficiently studied. Therefore, we analyzed TFLEs of 62 lead from 35 body donor corpses to gain information for a potential lead design optimization. We examined both TFLE topography on the basis on anatomical landmarks and histo-morphological TFLE characteristics by means of histological paraffin sections and scanning electron microscopy of decellularized samples. The macroscopic analysis revealed that all leads were affected by TFLEs, mainly in the lead bearing veins. Half (47.2%) of the right-ventricular leads possessed adhesions to the tricuspid valve. On average, 49.9 ± 21.8% of the intravascular lead length was covered by TFLE of which 82.8 ± 16.2% were adhesive wall bindings (WB). The discrete TFLEs with at least one WB portion had a mean length of 95.0 ± 64.3 mm and a maximum of 200 mm. Neither sex, DT nor certain technical lead parameters showed distinct tendencies to promote or prevent TFLE. TFLE formation seems to start early in the first 1-2 weeks after implantation. The degree of fibrotization of the TFLE, starting with a thrombus, was reflected by the amount of compacted collagenous fibers and likewise largely independent from DT. TFLE thickness often reached several hundred micrometers. Calcifications were occasionally seen and appeared irregularly along the TFLE sheath. Leadless pacemaker systems have the advantage to overcome the problem with TFLEs but hold their own specific risks and limitations which are not fully known yet.
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Affiliation(s)
- Jonas Keiler
- Department of Anatomy, Rostock University Medical Center, Rostock, Germany
| | - Marko Schulze
- Department of Anatomy, Rostock University Medical Center, Rostock, Germany
| | - Ronja Dreger
- Divisions of Cardiology, Rostock University Medical Center, Rostock, Germany
| | - Armin Springer
- Medical Biology and Electron Microscopy Center, Rostock University Medical Center, Rostock, Germany
| | - Alper Öner
- Divisions of Cardiology, Rostock University Medical Center, Rostock, Germany
| | - Andreas Wree
- Department of Anatomy, Rostock University Medical Center, Rostock, Germany
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Gellér L, Salló Z, Molnár L, Tahin T, Özcan EE, Kutyifa V, Osztheimer I, Szilágyi S, Szegedi N, Ábrahám P, Apor A, Nagy KV, Kosztin A, Becker D, Herczeg S, Zima E, Merkely B. Long-term single-centre large volume experience with transseptal endocardial left ventricular lead implantation. Europace 2020; 21:1237-1245. [PMID: 31168608 PMCID: PMC6680368 DOI: 10.1093/europace/euz116] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Accepted: 04/15/2019] [Indexed: 11/29/2022] Open
Abstract
Aims The aim of our study was to investigate the long-term efficacy and safety of transseptal endocardial left ventricular lead implantation (TELVLI). Methods and results Transseptal endocardial left ventricular lead implantation was performed in 54 patients (44 men, median age 69, New York Heart Association III–IV stage) between 2007 and 2017 in a single centre. In 36 cases, the transseptal puncture (TP) was performed via the femoral vein, and in 18 cases, the TP and also the left ventricular (LV) lead placement were performed via the subclavian vein. An electrophysiological deflectable catheter was used to reach the LV wall through the dilated TP hole. The LV lead implantation was successful in all patients. A total of 54 patients were followed up for a median of 29 months [interquartile range (IQR) 8–40 months], the maximum follow-up time was 94 months. Significant improvement in the LV ejection fraction was observed at the 3-month visit, from the median of 27% (IQR 25–34%) to 33% (IQR 32–44%), P < 0.05. Early lead dislocation was observed in three cases (5%), reposition was performed using the original puncture site in all. The patients were maintained on anticoagulation therapy with a target international normalized ratio between 2.5 and 3.5. Four thromboembolic events were noticed during follow-up. A total of 27 patients died, with a median survival of 15 months (IQR 6–40). Conclusion The TELVLI is an effective approach for cardiac resynchronization therapy (CRT) however it is associated with a substantial thromboembolic risk (7%).
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Affiliation(s)
- László Gellér
- Department of Cardiology, The Heart and Vascular Center of Semmelweis University, Városmajor street 68, Budapest H, Hungary
| | - Zoltán Salló
- Department of Cardiology, The Heart and Vascular Center of Semmelweis University, Városmajor street 68, Budapest H, Hungary
| | - Levente Molnár
- Department of Cardiology, The Heart and Vascular Center of Semmelweis University, Városmajor street 68, Budapest H, Hungary
| | - Tamás Tahin
- Department of Cardiology, St. Rafael Hospital, Zrínyi street 1, Zalaegerszeg H, Hungary
| | - Emin Evren Özcan
- Department of Cardiology, Faculty of Medicine, Dokuz Eylül University, Kültür Mahallesi, Cumhuriyet Blv No: 144, İzmir, Turkey
| | - Valentina Kutyifa
- Department of Cardiology, The Heart and Vascular Center of Semmelweis University, Városmajor street 68, Budapest H, Hungary.,University of Rochester Medical Center, 265 Crittenden Boulevard, Box 653, Rochester, NY, USA
| | - István Osztheimer
- Department of Cardiology, The Heart and Vascular Center of Semmelweis University, Városmajor street 68, Budapest H, Hungary
| | - Szabolcs Szilágyi
- Department of Cardiology, The Heart and Vascular Center of Semmelweis University, Városmajor street 68, Budapest H, Hungary
| | - Nándor Szegedi
- Department of Cardiology, The Heart and Vascular Center of Semmelweis University, Városmajor street 68, Budapest H, Hungary
| | - Pál Ábrahám
- Department of Cardiology, The Heart and Vascular Center of Semmelweis University, Városmajor street 68, Budapest H, Hungary
| | - Astrid Apor
- Department of Cardiology, The Heart and Vascular Center of Semmelweis University, Városmajor street 68, Budapest H, Hungary
| | - Klaudia Vivien Nagy
- Department of Cardiology, The Heart and Vascular Center of Semmelweis University, Városmajor street 68, Budapest H, Hungary
| | - Annamária Kosztin
- Department of Cardiology, The Heart and Vascular Center of Semmelweis University, Városmajor street 68, Budapest H, Hungary
| | - Dávid Becker
- Department of Cardiology, The Heart and Vascular Center of Semmelweis University, Városmajor street 68, Budapest H, Hungary
| | - Szilvia Herczeg
- Department of Cardiology, The Heart and Vascular Center of Semmelweis University, Városmajor street 68, Budapest H, Hungary
| | - Endre Zima
- Department of Cardiology, The Heart and Vascular Center of Semmelweis University, Városmajor street 68, Budapest H, Hungary
| | - Béla Merkely
- Department of Cardiology, The Heart and Vascular Center of Semmelweis University, Városmajor street 68, Budapest H, Hungary
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Rav Acha M, Soifer E, Hasin T. Cardiac Implantable Electronic Miniaturized and Micro Devices. MICROMACHINES 2020; 11:E902. [PMID: 33003460 PMCID: PMC7600795 DOI: 10.3390/mi11100902] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Revised: 09/21/2020] [Accepted: 09/25/2020] [Indexed: 12/13/2022]
Abstract
Advancement in the miniaturization of high-density power sources, electronic circuits, and communication technologies enabled the construction of miniaturized electronic devices, implanted directly in the heart. These include pacing devices to prevent low heart rates or terminate heart rhythm abnormalities ('arrhythmias'), long-term rhythm monitoring devices for arrhythmia detection in unexplained syncope cases, and heart failure (HF) hemodynamic monitoring devices, enabling the real-time monitoring of cardiac pressures to detect and alert for early fluid overload. These devices were shown to prevent HF hospitalizations and improve HF patients' life quality. Pacing devices include permanent pacemakers (PPM) that maintain normal heart rates, defibrillators that are capable of fast detection and the termination of life-threatening arrhythmias, and cardiac re-synchronization devices that improve cardiac function and the survival of HF patients. Traditionally, these devices are implanted via the venous system ('endovascular') using conductors ('endovascular leads/electrodes') that connect the subcutaneous device battery to the appropriate cardiac chamber. These leads are a potential source of multiple problems, including lead-failure and systemic infection resulting from the lifelong exposure of these leads to bacteria within the venous system. One of the important cardiac innovations in the last decade was the development of a leadless PPM functioning without venous leads, thus circumventing most endovascular PPM-related problems. Leadless PPM's consist of a single device, including a miniaturized power source, electronic chips, and fixating mechanism, directly implanted into the cardiac muscle. Only rare device-related problems and almost no systemic infections occur with these devices. Current leadless PPM's sense and pace only the ventricle. However, a novel leadless device that is capable of sensing both atrium and ventricle was recently FDA approved and miniaturized devices that are designed to synchronize right and left ventricles, using novel intra-body inner-device communication technologies, are under final experiments. This review will cover these novel implantable miniaturized cardiac devices and the basic algorithms and technologies that underlie their development. Advancement in the miniaturization of high-density power sources, electronic circuits, and communication technologies enabled the construction of miniaturized electronic devices, implanted directly in the heart. These include pacing devices to prevent low heart rates or terminate heart rhythm abnormalities ('arrhythmias'), long-term rhythm monitoring devices for arrhythmia detection in unexplained syncope cases, and heart failure (HF) hemodynamic monitoring devices, enabling the real-time monitoring of cardiac pressures to detect and alert early fluid overload. These devices were shown to prevent HF hospitalizations and improve HF patients' life quality. Pacing devices include permanent pacemakers (PPM) that maintain normal heart rates, defibrillators that are capable of fast detection and termination of life-threatening arrhythmias, and cardiac re-synchronization devices that improve cardiac function and survival of HF patients. Traditionally, these devices are implanted via the venous system ('endovascular') using conductors ('endovascular leads/electrodes') that connect the subcutaneous device battery to the appropriate cardiac chamber. These leads are a potential source of multiple problems, including lead-failure and systemic infection that result from the lifelong exposure of these leads to bacteria within the venous system. The development of a leadless PPM functioning without venous leads was one of the important cardiac innovations in the last decade, thus circumventing most endovascular PPM-related problems. Leadless PPM's consist of a single device, including a miniaturized power source, electronic chips, and fixating mechanism, implanted directly into the cardiac muscle. Only rare device-related problems and almost no systemic infections occur with these devices. Current leadless PPM's sense and pace only the ventricle. However, a novel leadless device that is capable of sensing both atrium and ventricle was recently FDA approved and miniaturized devices designed to synchronize right and left ventricles, using novel intra-body inner-device communication technologies, are under final experiments. This review will cover these novel implantable miniaturized cardiac devices and the basic algorithms and technologies that underlie their development.
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Affiliation(s)
- Moshe Rav Acha
- Jesselson Integrated Heart Center, Shaare Zedek Medical Center, Hebrew University, Jerusalem 910000, Israel;
| | - Elina Soifer
- Vectorious Medical Technologies, Tel Aviv 610000, Israel;
| | - Tal Hasin
- Jesselson Integrated Heart Center, Shaare Zedek Medical Center, Hebrew University, Jerusalem 910000, Israel;
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Mansour M. Letter from the Editor in Chief. J Innov Card Rhythm Manag 2019; 10:A5. [PMID: 32477716 PMCID: PMC7252662 DOI: 10.19102/icrm.2019.101208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Liang H, Ye L, Liang W, Wang R, Ge F, Fan L, Zhu Y, Li GS, Wang SD, Phan K, Sihoe A, Zhang K, He J. Potential factors of specialists' willingness to write editorial and commentary: a retrospective study based on 5,091 invitations. ANNALS OF TRANSLATIONAL MEDICINE 2019; 7:805. [PMID: 32042821 DOI: 10.21037/atm.2019.12.75] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Background Editorials and commentaries (E/C) are common article categories and usually solicited by editors in many journals. However, not all experts accept invitation for an E/C essay for a variety of reasons. We conducted this study to explore the potential influence factors contributing whether an invitation to write E/C is accepted by a specialist. Methods Data of invited E/C from all journals of AME Publishing Company between January 1st, 2018 and December 31st, 2018 were retrospectively identified and consecutively collected. Acceptance of writing E/C from experts was recorded as "positive", while acceptance without submission, refusal, or no response, were all recorded as "negative". Factors that could potentially affect invitation acceptance were generally categorized as being related to three areas: original studies, inviting journals, and experts. Results A total of 5,091 invitations were sent to 4,788 experts from 79 different countries or areas to write E/C on 695 research papers from 43 journals, with a total positive acceptance rate of 18.88%. Greece (40.54%), India (36.8%), and Brazil (35.42%) were the top three countries for acceptance rate. Surgeons (surgeons 23.80% vs. non-surgeons 17.05%; P<0.001) and oncologists (oncologists 22.57% vs. non-oncologists 17.58%; P=0.029) were more likely to accept the E/C invitations. The acceptance rate decreased with the increasing number of published articles of an expert (P=0.005). The acceptance rate was the highest (28.03%) when an inviting journal was indexed in both SCIE and PubMed. ABS, VATS and JTD ranked as the top three journals with the highest invitation acceptance rate. The impact factor of journals on which original papers were published had a negative correlation with the invitation acceptance rate (P=0.015). Database-related studies had the highest acceptance rate (21.66%), while translational (16.49%) and basic studies (16.56%) had a significantly lower acceptance rate among all study types. Conclusion Original studies, inviting journals, and expert-related factors were all influence factors on the acceptance rate/willingness to write of E/C from invitations.
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Affiliation(s)
- Hengrui Liang
- Department of Thoracic Surgery and Oncology, the First Affiliated Hospital of Guangzhou Medical University, State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, Guangzhou 510000, China
| | - Lujiao Ye
- AME Publishing Company, Guangzhou 510000, China
| | - Wenhua Liang
- Department of Thoracic Surgery and Oncology, the First Affiliated Hospital of Guangzhou Medical University, State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, Guangzhou 510000, China
| | - Runchen Wang
- Nanshan School, Guangzhou Medical University, Guangzhou 510000, China
| | - Fan Ge
- The First Clinical College, Guangzhou Medical University, Guangzhou 510000, China
| | - Lihua Fan
- AME Publishing Company, Guangzhou 510000, China
| | - Yao Zhu
- AME Publishing Company, Guangzhou 510000, China
| | - Grace S Li
- AME Publishing Company, Guangzhou 510000, China
| | | | - Kevin Phan
- Collaborative Research (CORE) Group, Macquarie University, Sydney, Australia
| | - Alan Sihoe
- Gleneagles Hong Kong Hospital, Hong Kong, China
| | | | - Jianxing He
- Department of Thoracic Surgery and Oncology, the First Affiliated Hospital of Guangzhou Medical University, State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, Guangzhou 510000, China
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