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Herweg B, Welter-Frost A, Vijayaraman P. The evolution of cardiac resynchronization therapy and an introduction to conduction system pacing: a conceptual review. Europace 2021; 23:496-510. [PMID: 33247913 DOI: 10.1093/europace/euaa264] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Indexed: 01/14/2023] Open
Abstract
In chronic systolic heart failure and conduction system disease, cardiac resynchronization therapy (CRT) is the only known non-pharmacologic heart failure therapy that improves cardiac function, functional capacity, and survival while decreasing cardiac workload and hospitalization rates. While conventional bi-ventricular pacing has been shown to benefit patients with heart failure and conduction system disease, there are limitations to its therapeutic success, resulting in widely variable clinical response. Limitations of conventional CRT evolve around myocardial scar, fibrosis, and inability to effectively simulate diseased tissue. Studies have shown endocardial stimulation in closer proximity to the specialized conduction system is more effective when compared with epicardial stimulation. Several observational and acute haemodynamic studies have demonstrated improved electrical resynchronization and echocardiographic response with conduction system pacing (CSP). Our objective is to provide a systematic review of the evolution of CRT, and an introduction to CSP as an intriguing, though experimental physiologic alternative to conventional CRT.
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Affiliation(s)
- Bengt Herweg
- Division of Cardiovascular Sciences, University of South Florida Morsani College of Medicine, South Tampa Center, 2 Tampa General Circle, Tampa, FL 33606, USA.,Tampa General Hospital, USF Health South Tampa Center, 1 Tampa General Circle, Tampa, FL 33606, USA
| | - Allan Welter-Frost
- Division of Cardiovascular Sciences, University of South Florida Morsani College of Medicine, South Tampa Center, 2 Tampa General Circle, Tampa, FL 33606, USA.,Tampa General Hospital, USF Health South Tampa Center, 1 Tampa General Circle, Tampa, FL 33606, USA
| | - Pugazhendhi Vijayaraman
- Division of Cardiology, Geisinger Commonwealth School of Medicine, Geisinger Heart Institute, MC 36-10, 1000 E Mountain Blvd, Wilkes-Barre, PA 18711, USA
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Qian Z, Wang Y, Hou X, Qiu Y, Jiang Z, Wu H, Zhao Z, Zhou W, Zou J. A pilot study to determine if left ventricular activation time is a useful parameter for left bundle branch capture: Validated by ventricular mechanical synchrony with SPECT imaging. J Nucl Cardiol 2021; 28:1153-1161. [PMID: 32333279 DOI: 10.1007/s12350-020-02111-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Accepted: 03/13/2020] [Indexed: 11/25/2022]
Abstract
BACKGROUND Left bundle branch (LBB) pacing has emerged as a novel pacing modality. Left ventricular activation time (LVAT) was reported to be associated with the activation via LBB, but the value of LVAT for determining LBB pacing was unknown. We conducted a pilot study to determine if LVAT could define LBB capture by validating left ventricular (LV) mechanical synchrony. METHODS We analyzed LVAT in 68 bradycardia-indicated patients who received LBB pacing. LVAT was measured from the stimulus to R-wave peak in lead V5 and V6. LV mechanical synchrony assessed by SPECT MPI was compared according to the value of LVAT and the presence of LBB potential. RESULTS The mean LVAT was 75.4 ± 12.7 ms. LBB potential was recorded in 47 patients (69.1%). Patients with LVAT < 76 ms had better LV mechanical synchrony than those with LVAT ≥ 76 ms. Patients with LVAT < 76 ms or LBB potential had better mechanical synchrony than those with LVAT ≥ 76 ms and no potential. LVAT < 76 ms could predict the normal synchrony with a sensitivity of 88.9% and a specificity of 87.5%. CONCLUSION A short LVAT indicated favorable mechanical synchrony in SPECT imaging. LVAT < 76 ms might be a practical parameter for defining LBB capture.
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Affiliation(s)
- Zhiyong Qian
- Department of Cardiology, the First Affiliated Hospital, Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, China
| | - Yao Wang
- Department of Cardiology, the First Affiliated Hospital, Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, China
| | - Xiaofeng Hou
- Department of Cardiology, the First Affiliated Hospital, Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, China
| | - Yuanhao Qiu
- Department of Cardiology, the First Affiliated Hospital, Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, China
| | - Zeyu Jiang
- Department of Cardiology, the First Affiliated Hospital, Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, China
| | - Hongping Wu
- Department of Cardiology, the First Affiliated Hospital, Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, China
| | - Zhongqiang Zhao
- Department of Cardiology, the First Affiliated Hospital, Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, China
| | - Weihua Zhou
- College of Computing, Michigan Technological University, Houghton, MI, 49931, USA
| | - Jiangang Zou
- Department of Cardiology, the First Affiliated Hospital, Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, China.
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53
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Huang W, Zhou X, Ellenbogen KA. Pursue physiological pacing therapy: A better understanding of left bundle branch pacing and left ventricular septal myocardial pacing. Heart Rhythm 2021; 18:1290-1291. [PMID: 33992731 DOI: 10.1016/j.hrthm.2021.05.013] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 05/07/2021] [Accepted: 05/11/2021] [Indexed: 10/21/2022]
Affiliation(s)
- Weijian Huang
- Department of Cardiology, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China.
| | - Xiaohong Zhou
- Cardiac Rhythm Management, Medtronic, plc, Minneapolis, Minnesota
| | - Kenneth A Ellenbogen
- Division of Cardiology, Virginia Commonwealth University Medical Center, Richmond, Virginia
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54
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Left bundle branch pacing compared to left ventricular septal myocardial pacing increases interventricular dyssynchrony but accelerates left ventricular lateral wall depolarization. Heart Rhythm 2021; 18:1281-1289. [PMID: 33930549 DOI: 10.1016/j.hrthm.2021.04.025] [Citation(s) in RCA: 55] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Revised: 04/11/2021] [Accepted: 04/22/2021] [Indexed: 11/21/2022]
Abstract
BACKGROUND Nonselective His-bundle pacing (nsHBp), nonselective left bundle branch pacing (nsLBBp), and left ventricular septal myocardial pacing (LVSP) are recognized as physiological pacing techniques. OBJECTIVE The purpose of this study was to compare differences in ventricular depolarization between these techniques using ultra-high-frequency electrocardiography (UHF-ECG). METHODS In patients with bradycardia, nsHBp, nsLBBp (confirmed concomitant left bundle branch [LBB] and myocardial capture), and LVSP (pacing in left ventricular [LV] septal position without proven LBB capture) were performed. Timings of ventricular activations in precordial leads were displayed using UHF-ECG, and electrical dyssynchrony (e-DYS) was calculated as the difference between the first and last activation. Duration of local depolarization (Vd) was determined as width of the UHF-QRS complex at 50% of its amplitude. RESULTS In 68 patients, data were collected during nsLBBp (35), LVSP (96), and nsHBp (55). nsLBBp resulted in larger e-DYS than did LVSP and nsHBp [- 24 ms (-28;-19) vs -12 ms (-16;-9) vs 10 ms (7;14), respectively; P <.001]. nsLBBp produced similar values of Vd in leads V5-V8 (36-43 ms vs 38-43 ms; P = NS in all leads) but longer Vd in leads V1-V4 (47-59 ms vs 41-44 ms; P <.05) as nsHBp. LVSP caused prolonged Vd in leads V1-V8 compared to nsHBp and longer Vd in leads V5-V8 compared to nsLBBp (44-51 ms vs 36-43 ms; P <.05) regardless of R-wave peak time in lead V5 or QRS morphology in lead V1 present during LVSP. CONCLUSION nslbbp preserves physiological LV depolarization but increases interventricular electrical dyssynchrony. LV lateral wall depolarization during LVSP is prolonged, but interventricular synchrony is preserved.
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55
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Liu P, Wang Q, Sun H, Qin X, Zheng Q. Left Bundle Branch Pacing: Current Knowledge and Future Prospects. Front Cardiovasc Med 2021; 8:630399. [PMID: 33834042 PMCID: PMC8021709 DOI: 10.3389/fcvm.2021.630399] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 02/05/2021] [Indexed: 12/16/2022] Open
Abstract
Cardiac pacing is an effective therapy for treating patients with bradycardia due to sinus node dysfunction or atrioventricular block. However, traditional right ventricular apical pacing (RVAP) causes electric and mechanical dyssynchrony, which is associated with increased risk for atrial arrhythmias and heart failure. Therefore, there is a need to develop a physiological pacing approach that activates the normal cardiac conduction and provides synchronized contraction of ventricles. Although His bundle pacing (HBP) has been widely used as a physiological pacing modality, it is limited by challenging implantation technique, unsatisfactory success rate in patients with wide QRS wave, high pacing capture threshold, and early battery depletion. Recently, the left bundle branch pacing (LBBP), defined as the capture of left bundle branch (LBB) via transventricular septal approach, has emerged as a newly physiological pacing modality. Results from early clinical studies have demonstrated LBBP's feasibility and safety, with rare complications and high success rate. Overall, this approach has been found to provide physiological pacing that guarantees electrical synchrony of the left ventricle with low pacing threshold. This was previously specifically characterized by narrow paced QRS duration, large R waves, fast synchronized left ventricular activation, and correction of left bundle branch block. Therefore, LBBP may be a potential alternative pacing modality for both RVAP and cardiac resynchronization therapy with HBP or biventricular pacing (BVP). However, the technique's widespread adaptation needs further validation to ascertain its safety and efficacy in randomized clinical trials. In this review, we discuss the current knowledge of LBBP.
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Affiliation(s)
- Peng Liu
- Department of Cardiology, The Second Affiliate Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Qiaozhu Wang
- Department of Cardiology, The Second Affiliate Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Hongke Sun
- Department of Cardiology, The Second Affiliate Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Xinghua Qin
- School of Life Sciences, Northwestern Polytechnical University, Xi'an, China
| | - Qiangsun Zheng
- Department of Cardiology, The Second Affiliate Hospital of Xi'an Jiaotong University, Xi'an, China
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Abstract
Cardiac implantable electronic devices (CIEDs) are essential for the management of a variety of cardiac conditions, including tachyarrhythmias, bradyarrhythmias, and medically refractory heart failure (HF). Recent advancements in CIED technology have led to innovative solutions that overcome shortcomings associated with traditional devices or address unmet needs. Leadless pacemakers, subcutaneous implantable cardioverter defibrillators (ICDs), and extravascular ICDs eliminate lead-related complications common with conventional pacemakers or ICDs. Conduction system pacing (His bundle pacing and left bundle branch pacing) is a more physiologic method of pacing and avoids the deleterious consequences associated with long-term right ventricular pacing. For HF-related devices, cardiac contractility modulation is an emerging therapy that bridges a gap for many patients ineligible for cardiac resynchronization therapy and has been shown to improve HF symptoms and decrease hospitalizations and mortality in select patients. Implantable pulmonary artery pressure monitors help guide HF management and reduce hospitalizations. Lastly, new phrenic nerve stimulating devices are being utilized to treat central sleep apnea, a common comorbidity associated with HF. While further long-term studies are still underway for many of these new technologies, it is anticipated that these devices will become indispensable therapeutics in the expanding cardiovascular armamentarium.
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57
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Comparing Ventricular Synchrony in Left Bundle Branch and Left Ventricular Septal Pacing in Pacemaker Patients. J Clin Med 2021; 10:jcm10040822. [PMID: 33671420 PMCID: PMC7923157 DOI: 10.3390/jcm10040822] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Revised: 02/11/2021] [Accepted: 02/12/2021] [Indexed: 12/21/2022] Open
Abstract
Background: Left bundle branch area pacing (LBBAP) has recently been introduced as a novel physiological pacing strategy. Within LBBAP, distinction is made between left bundle branch pacing (LBBP) and left ventricular septal pacing (LVSP, no left bundle capture). Objective: To investigate acute electrophysiological effects of LBBP and LVSP as compared to intrinsic ventricular conduction. Methods: Fifty patients with normal cardiac function and pacemaker indication for bradycardia underwent LBBAP. Electrocardiography (ECG) characteristics were evaluated during pacing at various depths within the septum: starting at the right ventricular (RV) side of the septum: the last position with QS morphology, the first position with r’ morphology, LVSP and—in patients where left bundle branch (LBB) capture was achieved—LBBP. From the ECG’s QRS duration and QRS morphology in lead V1, the stimulus- left ventricular activation time left ventricular activation time (LVAT) interval were measured. After conversion of the ECG into vectorcardiogram (VCG) (Kors conversion matrix), QRS area and QRS vector in transverse plane (Azimuth) were determined. Results: QRS area significantly decreased from 82 ± 29 µVs during RV septal pacing (RVSP) to 46 ± 12 µVs during LVSP. In the subgroup where LBB capture was achieved (n = 31), QRS area significantly decreased from 46 ± 17 µVs during LVSP to 38 ± 15 µVs during LBBP, while LVAT was not significantly different between LVSP and LBBP. In patients with normal ventricular activation and narrow QRS, QRS area during LBBP was not significantly different from that during intrinsic activation (37 ± 16 vs. 35 ± 19 µVs, respectively). The Azimuth significantly changed from RVSP (−46 ± 33°) to LVSP (19 ± 16°) and LBBP (−22 ± 14°). The Azimuth during both LVSP and LBBP were not significantly different from normal ventricular activation. QRS area and LVAT correlated moderately (Spearman’s R = 0.58). Conclusions: ECG and VCG indices demonstrate that both LVSP and LBBP improve ventricular dyssynchrony considerably as compared to RVSP, to values close to normal ventricular activation. LBBP seems to result in a small, but significant, improvement in ventricular synchrony as compared to LVSP.
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58
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De Pooter J, Calle S, Timmermans F, Van Heuverswyn F. Left bundle branch area pacing using stylet‐driven pacing leads with a new delivery sheath: A comparison with lumen‐less leads. J Cardiovasc Electrophysiol 2021; 32:439-448. [DOI: 10.1111/jce.14851] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Revised: 11/26/2020] [Accepted: 12/13/2020] [Indexed: 11/30/2022]
Affiliation(s)
- Jan De Pooter
- Heart Center Ghent University Hospital Ghent Belgium
| | - Simon Calle
- Heart Center Ghent University Hospital Ghent Belgium
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59
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Chen AY, Upadhyay GA. Current Treatment Options in Cardiovascular Medicine Arrhythmia Section From the His Bundle to the Left Bundle: Clinical Applications of Conduction System Pacing. CURRENT TREATMENT OPTIONS IN CARDIOVASCULAR MEDICINE 2021. [DOI: 10.1007/s11936-020-00880-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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60
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Wu S, Sharma PS, Huang W. Novel left ventricular cardiac synchronization: left ventricular septal pacing or left bundle branch pacing? Europace 2020; 22:ii10-ii18. [PMID: 33370804 DOI: 10.1093/europace/euaa297] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Indexed: 02/01/2023] Open
Abstract
Abstract
It is well recognized that a high burden of right ventricular pacing results in deleterious clinical outcomes over the long term. His bundle pacing can achieve optimal ventricular synchronization; however, relatively high pacing thresholds, low R-wave amplitudes, and the long-term performance have been concerns. Recently, left ventricular (LV) septal endocardium pacing (LVSP) has demonstrated improved acute haemodynamics. Another novel technique of intraseptal left bundle branch pacing (LBBP) via transvenous approach has been adopted rapidly and has demonstrated its feasibility and effectiveness. This article reviews the clinical application and differences between LVSP and LBBP. Compared with LVSP, LBBP has strict criteria for left conduction system capture and lead location. In addition to LV septal capture it also stimulates the proximal left bundle branch, resulting in rapid and physiological LV activation. With a uniformity and standardization of the implant procedure and definitions, it may be possible to achieve widespread application of this form of physiological pacing.
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Affiliation(s)
- Shengjie Wu
- Department of Cardiology, The First Affiliated Hospital of Wenzhou Medical University, Nanbaixiang, Wenzhou 325000, PR China
- The Key Lab of Cardiovascular Disease, Science and Technology of Wenzhou, Wenzhou, PR China
| | - Parikshit S Sharma
- Division of Cardiology, Rush University Medical Center, Chicago, IL, USA
| | - Weijian Huang
- Department of Cardiology, The First Affiliated Hospital of Wenzhou Medical University, Nanbaixiang, Wenzhou 325000, PR China
- The Key Lab of Cardiovascular Disease, Science and Technology of Wenzhou, Wenzhou, PR China
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61
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Zhang J, Sheng X, Pan Y, Wang M, Fu G. Electrophysiological Insights into Three Modalities of Left Bundle Branch Area Pacing in Patients Indicated for Pacing Therapy. Int Heart J 2020; 62:78-86. [PMID: 33390564 DOI: 10.1536/ihj.20-490] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Left bundle branch pacing (LBBP) has been adopted as a new pacing therapy whether in routine pacing or patients with heart failure, but the criteria for a completely captured LBBP are too complicated and have a low success rate in routine clinical practice.Consecutive patients with pacing therapy indications were enrolled. Left bundle branch area pacing (LBBAP) was conducted, and the presence of LBB potential, paced QRS duration, stimulus to left ventricular activation time (Stim-LVAT), and LBB potential to left ventricular activation time (LBB po-LVAT) were determined and utilized to characterize LBBAP modalities. Pacing parameters and safety were assessed at 6-month follow-up. LBBAP succeeded in 95.6% of patients (103/106) who completed the 6-month follow-up. Complete LBBP was achieved in 21 (20%) patients, characterized with a short Stim-LVAT equal to LBB po-LVAT. Incomplete LBBP was achieved in 58 (56%) patients with a short Stim-LVAT equal to LBB po-LVAT at a high pacing output and a relatively longer Stim-LVAT at a low pacing output. Deep septal pacing (DSP) characterized with no LBB potential and a longer Stim-LVAT (83.3 ± 7.7 ms) than that in LBBP (71.37 ± 7.1 ms, P < 0.01 versus DSP) was observed in 24 (23%) patients. Complete LBBP had a longer total procedure time and longer fluoroscopic time than the other two groups.This study describes the similarities and differences in electrophysiological characteristics and the possible mechanisms of the different types of LBBAP, classified into 3 modalities in routine clinical practice, each with narrow paced QRS duration and stable parameters, indicating LBBAP can be a near-physiological pacing modality.
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Affiliation(s)
- Jiefang Zhang
- Department of Cardiology, Sir Run Run Shaw Hospital, Zhejiang University of Medicine
| | - Xia Sheng
- Department of Cardiology, Sir Run Run Shaw Hospital, Zhejiang University of Medicine
| | - Yiwen Pan
- Department of Cardiology, Sir Run Run Shaw Hospital, Zhejiang University of Medicine
| | - Min Wang
- Department of Cardiology, Sir Run Run Shaw Hospital, Zhejiang University of Medicine
| | - Guosheng Fu
- Department of Cardiology, Sir Run Run Shaw Hospital, Zhejiang University of Medicine
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Padala SK, Master VM, Terricabras M, Chiocchini A, Garg A, Kron J, Shepard R, Kalahasty G, Azizi Z, Tsang B, Khaykin Y, Pantano A, Koneru JN, Ellenbogen KA, Verma A. Initial Experience, Safety, and Feasibility of Left Bundle Branch Area Pacing. JACC Clin Electrophysiol 2020; 6:1773-1782. [DOI: 10.1016/j.jacep.2020.07.004] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 06/19/2020] [Accepted: 07/05/2020] [Indexed: 02/01/2023]
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63
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Arnold AD, Whinnett ZI, Vijayaraman P. His-Purkinje Conduction System Pacing: State of the Art in 2020. Arrhythm Electrophysiol Rev 2020; 9:136-145. [PMID: 33240509 PMCID: PMC7675135 DOI: 10.15420/aer.2020.14] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Accepted: 06/30/2020] [Indexed: 01/02/2023] Open
Abstract
Conduction system pacing involves directly stimulating the specialised His-Purkinje cardiac conduction system with the aim of activating the ventricles physiologically, in contrast to the dyssynchronous activation produced by conventional myocardial pacing. Since the first report of permanent His bundle pacing (HBP) in 2000, the stylet-driven technique of its earliest incarnation has been superseded by a more successful stylet-less approach. Widespread uptake has led to a much greater evidence base. Single-centre observational studies have now been supported by large multicentre, international registries, mechanistic studies and the first randomised controlled trials. New evidence has elucidated mechanisms of HBP and illustrated the nature and magnitude of its potential benefits for preventing pacing-induced cardiomyopathy and correcting bundle branch block. Left bundle branch pacing (LBBP) is a newer technique in which the lead is fixed deep into the left side of the intraventricular septum to allow capture of the left bundle, distal to the His bundle. LBBP holds promise as a method for physiological pacing that overcomes some of the fixation, threshold and sensing challenges of HBP. In this state-of-the-art review of His-Purkinje conduction system pacing, the authors assess recent evidence and current practice and explore emerging and future directions in this rapidly evolving field.
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Affiliation(s)
- Ahran D Arnold
- National Heart and Lung Institute, Imperial College London, London, UK
| | | | - Pugazhendhi Vijayaraman
- Geisinger Heart Institute, Geisinger Commonwealth School of Medicine, Wilkes-Barre, Pennsylvania, US
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64
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Wang S, Lan R, Zhang N, Zheng J, Gao Y, Bai J, Wu X, Xu X, Wang T, Xu W. LBBAP in patients with normal intrinsic QRS duration: Electrical and mechanical characteristics. PACING AND CLINICAL ELECTROPHYSIOLOGY: PACE 2020; 44:82-92. [PMID: 33118183 PMCID: PMC7898286 DOI: 10.1111/pace.14114] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 09/03/2020] [Accepted: 10/25/2020] [Indexed: 12/11/2022]
Abstract
BACKGROUND Left bundle branch area pacing (LBBAP) is an innovative pacing technology, which needs further study. METHODS Seventy LBBAP patients with intrinsic QRS duration (QRSd) less than 120 ms were consecutively enrolled in our center. According to whether the left bundle branch potential (LBBp) was recorded or not, the patients were divided into the potential positive group (LBBAP+) and the potential negative group (LBBAP-). Electrocardiographic and echocardiographic parameters were used to evaluate electrical and mechanical characteristics. Lead parameters and complications were followed-up. RESULTS There were 52 patients in LBBAP+ and 18 patients in LBBAP-. The QRSd and the left ventricular activation time (LVAT) were wider after LBBAP. QRSd showed no significant difference between LBBAP+ and LBBAP-. LVAT was significantly shorter in LBBAP+ than in LBBAP-. Frontal QRS axis shifted leftward and the V1 morphologies changed after LBBAP. QRS axis and V1 morphologies showed no significant differences between two groups. Paced R-wave transition moved forward compared with intrinsic R-wave transition in both groups. Peak systolic strain of left ventricle (LVPSS) increased, and peak systolic dispersion of left ventricle (LVPSD) did not change significantly after LBBAP. Systolic and diastolic function as well as mechanical synchronism had no significant differences between two groups. LBBAP had great pacing parameters. CONCLUSION LBBAP changes electrical and mechanical characteristics and has good safety in patients with normal intrinsic QRSd. LBBAP+ and LBBAP- show no significant differences in mechanical synchronization and interventricular electrical synchronization. The LBBAP+ shows better left ventricular electrical synchronicity.
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Affiliation(s)
- Shaoxian Wang
- Department of Cardiology, Nanjing Drum Tower Hospital, Clinical College of Nanjing Medical University, Nanjing, China
| | - Rongfang Lan
- Department of Cardiology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University, Nanjing, China
| | - Ning Zhang
- Department of Cardiology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University, Nanjing, China
| | - Jia Zheng
- Department of Cardiology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University, Nanjing, China
| | - Yuan Gao
- Department of Cardiology, Nanjing Drum Tower Hospital, Clinical College of Nanjing Medical University, Nanjing, China
| | - Jian Bai
- Department of Cardiology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University, Nanjing, China
| | - Xiang Wu
- Department of Cardiology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University, Nanjing, China
| | - Xinyue Xu
- Department of Cardiology, Nanjing Drum Tower Hospital, Clinical College of Nanjing Medical University, Nanjing, China
| | - Tianqi Wang
- Department of Cardiology, Nanjing Drum Tower Hospital, Clinical College of Nanjing Medical University, Nanjing, China
| | - Wei Xu
- Department of Cardiology, Nanjing Drum Tower Hospital, Clinical College of Nanjing Medical University, Nanjing, China.,Department of Cardiology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University, Nanjing, China
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65
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Heckman L, Vijayaraman P, Luermans J, Stipdonk AMW, Salden F, Maass AH, Prinzen FW, Vernooy K. Novel bradycardia pacing strategies. Heart 2020; 106:1883-1889. [DOI: 10.1136/heartjnl-2020-316849] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 08/08/2020] [Accepted: 08/30/2020] [Indexed: 11/04/2022] Open
Abstract
The adverse effects of ventricular dyssynchrony induced by right ventricular (RV) pacing has led to alternative pacing strategies, such as biventricular, His bundle (HBP), LV septal (LVSP) and left bundle branch pacing (LBBP). Given the overlap, LVSP and LBBP are also collectively referred to as left bundle branch area pacing (LBBAP). Although among these alternative pacing sites HBP is theoretically the ideal strategy as it maintains a physiological ventricular activation, its application requires more skills and is associated with the most complications. LBBAP, where the ventricular pacing lead is advanced through the interventricular septum to its left side, creates ventricular activation that is only slightly more dyssynchronous. Preliminary studies have shown that LBBAP is feasible, safe and encounters less limitations than HBP. Further studies are needed to differentiate between LVSP and LBBP with regard to acute functional and long-term clinical outcome.
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66
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Feng XF, Zhang PP, Liu B, Zhao Y, Lu QF, Li YG. Permanent left bundle branch area pacing utilizing intracardiac echocardiogram. BMC Cardiovasc Disord 2020; 20:377. [PMID: 32811431 PMCID: PMC7436978 DOI: 10.1186/s12872-020-01649-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2019] [Accepted: 08/03/2020] [Indexed: 11/10/2022] Open
Abstract
Background Recently, left bundle branch area pacing (LBBAP) has been shown to be feasible. However, the right ventricular (RV) implantation site for LBBAP remains elusive. We believe that the RV implantation site should be located at the posteromedial basal septum, and in this paper, we propose a new method to help guide lead implantation. The aim of this study is to demonstrate the feasibility of the proposed method. Methods The RV implantation site was positioned by a combination of a nine-grid system on fluoroscopy and the use of intracardiac echocardiogram (ICE) and then verified by ICE. Results Fifteen patients were enrolled for LBBAP using our method. The acute success rate was 86.7% (13/15), which demonstrated that our method is useful for assisting with lead implantation. According to ICE, the distance between the implantation site and apex (the front) and the distance between the implantation site and tricuspid annulus (the back) were 44.9 ± 10.7 and 33.2 ± 10.4 mm, respectively, and the ratio of the front and the back was 1.57 ± 0.80. The distance between the implantation site and the front junction point of the left-right ventricle (the upper) and the distance between the implantation site and the back junction point (the lower) were 33.4 ± 10.6 and 24.5 ± 10.2 mm, respectively. The ratio of the upper to the lower was 1.76 ± 1.36. These results suggest that the implantation site was at the posteromedial basal septum. The width of the QRS duration increased from 110.4 ± 33.1 ms at baseline to 114.1 ± 16.1 ms post LBBAP (P > 0.05). The operation time was 133 ± 32.9 min. The time of X-ray fluoroscopy was 21.2 ± 5.9 min. The mean time for lead positioning during LBBAP was 33.8 ± 16.6 min. During a follow-up of 3 months, the LBB capture threshold remained stable in 12 patients, except for one patient who had an increase in the LBB capture threshold to 3.0 v/0.4 ms. Conclusions Our preliminary results indicate that the posteromedial basal septum could be seen as the implantation site for LBBAP. As a technique for LBBAP, ICE is a useful method for assisting with lead implantation. It is feasible and safe to use a nine-grid system combined with ICE for LBBAP.
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Affiliation(s)
- Xiang-Fei Feng
- Department of Cardiology, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, 1665#, KongJiang Road, Shanghai, 200092, China.
| | - Peng-Pai Zhang
- Department of Cardiology, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, 1665#, KongJiang Road, Shanghai, 200092, China
| | - Bo Liu
- Department of Cardiology, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, 1665#, KongJiang Road, Shanghai, 200092, China
| | - Yan Zhao
- Department of Cardiology, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, 1665#, KongJiang Road, Shanghai, 200092, China
| | - Qiu-Fen Lu
- Department of Cardiology, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, 1665#, KongJiang Road, Shanghai, 200092, China
| | - Yi-Gang Li
- Department of Cardiology, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, 1665#, KongJiang Road, Shanghai, 200092, China.
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Salden FCWM, Luermans JGLM, Westra SW, Weijs B, Engels EB, Heckman LIB, Lamerichs LJM, Janssen MHG, Clerx KJH, Cornelussen R, Ghosh S, Prinzen FW, Vernooy K. Short-Term Hemodynamic and Electrophysiological Effects of Cardiac Resynchronization by Left Ventricular Septal Pacing. J Am Coll Cardiol 2020; 75:347-359. [PMID: 32000945 DOI: 10.1016/j.jacc.2019.11.040] [Citation(s) in RCA: 88] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 10/31/2019] [Accepted: 11/08/2019] [Indexed: 11/18/2022]
Abstract
BACKGROUND Cardiac resynchronization therapy (CRT) is usually performed by biventricular (BiV) pacing. Previously, feasibility of transvenous implantation of a lead at the left ventricular (LV) endocardial side of the interventricular septum, referred to as LV septal (LVs) pacing, was demonstrated. OBJECTIVES The authors sought to compare the acute electrophysiological and hemodynamic effects of LVs with BiV and His bundle (HB) pacing in CRT patients. METHODS Temporary LVs pacing (transaortic approach) alone or in combination with right ventricular (RV) (LVs+RV), BiV, and HB pacing was performed in 27 patients undergoing CRT implantation. Electrophysiological changes were assessed using electrocardiography (QRS duration), vectorcardiography (QRS area), and multielectrode body surface mapping (standard deviation of activation times [SDAT]). Hemodynamic changes were assessed as the first derivative of LV pressure (LVdP/dtmax). RESULTS As compared with baseline, LVs pacing resulted in a larger reduction in QRS area (to 73 ± 22 μVs) and SDAT (to 26 ± 7 ms) than BiV (to 93 ± 26 μVs and 31 ± 7 ms; both p < 0.05) and LVs+RV pacing (to 108 ± 37 μVs; p < 0.05; and 29 ± 8 ms; p = 0.05). The increase in LVdP/dtmax was similar during LVs and BiV pacing (17 ± 10% vs. 17 ± 9%, respectively) and larger than during LVs+RV pacing (11 ± 9%; p < 0.05). There were no significant differences between basal, mid-, or apical LVs levels in LVdP/dtmax and SDAT. In a subgroup of 16 patients, changes in QRS area, SDAT, and LVdP/dtmax were comparable between LVs and HB pacing. CONCLUSIONS LVs pacing provides short-term hemodynamic improvement and electrical resynchronization that is at least as good as during BiV and possibly HB pacing. These results indicate that LVs pacing may serve as a valuable alternative for CRT.
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Affiliation(s)
- Floor C W M Salden
- Department of Physiology, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, Maastricht, the Netherlands.
| | - Justin G L M Luermans
- Department of Cardiology, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University Medical Center (MUMC+), Maastricht, the Netherlands; Department of Cardiology, Radboud University Medical Centre (Radboudumc), Nijmegen, the Netherlands
| | - Sjoerd W Westra
- Department of Cardiology, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University Medical Center (MUMC+), Maastricht, the Netherlands; Department of Cardiology, Radboud University Medical Centre (Radboudumc), Nijmegen, the Netherlands
| | - Bob Weijs
- Department of Cardiology, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University Medical Center (MUMC+), Maastricht, the Netherlands
| | - Elien B Engels
- Department of Physiology, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, Maastricht, the Netherlands; Department of Medicine, University of Western Ontario, London, Ontario, Canada
| | - Luuk I B Heckman
- Department of Physiology, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, Maastricht, the Netherlands
| | - Léon J M Lamerichs
- Department of Cardiology, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University Medical Center (MUMC+), Maastricht, the Netherlands
| | - Michel H G Janssen
- Department of Cardiology, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University Medical Center (MUMC+), Maastricht, the Netherlands
| | - Kristof J H Clerx
- Department of Cardiology, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University Medical Center (MUMC+), Maastricht, the Netherlands
| | - Richard Cornelussen
- Department of Physiology, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, Maastricht, the Netherlands; Medtronic PLC, Bakken Research Center, Maastricht, the Netherlands
| | - Subham Ghosh
- Medtronic PLC, Cardiac Rhythm and Heart Failure (CRHF), Mounds View, Minnesota
| | - Frits W Prinzen
- Department of Physiology, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, Maastricht, the Netherlands
| | - Kevin Vernooy
- Department of Cardiology, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University Medical Center (MUMC+), Maastricht, the Netherlands; Department of Cardiology, Radboud University Medical Centre (Radboudumc), Nijmegen, the Netherlands
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Cardiac Resynchronization Therapy in Patients With Nonischemic Cardiomyopathy Using Left Bundle Branch Pacing. JACC Clin Electrophysiol 2020; 6:849-858. [DOI: 10.1016/j.jacep.2020.04.011] [Citation(s) in RCA: 103] [Impact Index Per Article: 25.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 04/02/2020] [Accepted: 04/03/2020] [Indexed: 11/23/2022]
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69
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Tung R, Upadhyay GA. Defining Left Bundle Branch Block Patterns in Cardiac Resynchronisation Therapy: A Return to His Bundle Recordings. Arrhythm Electrophysiol Rev 2020; 9:28-33. [PMID: 32637117 PMCID: PMC7330724 DOI: 10.15420/aer.2019.12] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Left bundle branch block (LBBB) is associated with improved outcome after cardiac resynchronisation therapy (CRT). One historical presumption of LBBB has been that the underlying pathophysiology involved diffuse disease throughout the distal conduction system. The ability to normalize wide QRS patterns with His bundle pacing (HBP) has called this notion into question. The determination of LBBB pattern is conventionally made by assessment of surface 12-lead ECGs and can include patients with and without conduction block, as assessed by invasive electrophysiology study (EPS). During a novel extension of the classical EPS to involve left-sided recordings, we found that conduction block associated with the LBBB pattern is most often proximal, usually within the left-sided His fibres, and these patients are the most likely to demonstrate QRS correction with HBP for resynchronisation. Patients with intact Purkinje activation and intraventricular conduction delay are less likely to benefit from HBP. Future EPS are required to determine the impact of newer approaches to conduction system pacing, including intraseptal or left ventricular septal pacing. Left-sided EPS has the potential to refine patient selection in CRT trials and may be used to physiologically phenotype distinct conduction patterns beyond LBBB pattern.
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Affiliation(s)
- Roderick Tung
- Center for Arrhythmia Care, Pritzker School of Medicine, University of Chicago, Chicago, IL, US
| | - Gaurav A Upadhyay
- Center for Arrhythmia Care, Pritzker School of Medicine, University of Chicago, Chicago, IL, US
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De Pooter J, Calle S, Bove T, Van Heuverswyn FE, Timmermans F. Perimembranous ventricular septal defect following His bundle lead implantation. J Cardiovasc Electrophysiol 2020; 31:1844-1847. [PMID: 32412109 DOI: 10.1111/jce.14553] [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: 04/09/2020] [Revised: 05/07/2020] [Accepted: 05/12/2020] [Indexed: 11/29/2022]
Abstract
His bundle pacing (HBP) offers physiologic pacing by placing the pacing lead directly to the His bundle. We present a case in which a HBP lead, implanted at the fragile membranous septum, resulted in a persistent restrictive perimembranous ventricular septal defect (VSD). This complication of HBP has not been reported before but brings new insights in the discussion regarding the optimal position of a pacing lead in the ventricular septum. The fragility of the membranous septum and low rate of spontaneous closure of membranous VSD, might favor lead placement in the muscular septum when aiming for physiologic pacing.
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Affiliation(s)
- Jan De Pooter
- Heart Center, University Hospital Ghent, Ghent, Belgium
| | - Simon Calle
- Heart Center, University Hospital Ghent, Ghent, Belgium
| | - Thierry Bove
- Department of Cardiac Surgery, University Hospital Ghent, Ghent, Belgium
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Affiliation(s)
- Santosh K Padala
- Department of Cardiac Electrophysiology, Virginia Commonwealth University, Richmond, Virginia
| | - Kenneth A Ellenbogen
- Department of Cardiac Electrophysiology, Virginia Commonwealth University, Richmond, Virginia
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Affiliation(s)
| | | | - Roderick Tung
- Address reprint requests and correspondence: Dr Roderick Tung, The University of Chicago Medicine, Center for Arrhythmia Care, 5841 S Maryland Ave, MC 6080, Chicago, IL 60637.
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74
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Vijayaraman P, Nayak HM, Ellenbogen KA. Left Ventricular Septal Versus Left Bundle Branch Pacing: A New Beginning in Cardiac Resynchronization Therapy? J Am Coll Cardiol 2020; 75:360-362. [PMID: 32000946 DOI: 10.1016/j.jacc.2019.11.041] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Accepted: 11/11/2019] [Indexed: 11/28/2022]
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75
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Calle S, Delens C, Kamoen V, De Pooter J, Timmermans F. Septal flash: At the heart of cardiac dyssynchrony. Trends Cardiovasc Med 2020; 30:115-122. [DOI: 10.1016/j.tcm.2019.03.008] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Revised: 03/31/2019] [Accepted: 03/31/2019] [Indexed: 11/29/2022]
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Jastrzębski M, Moskal P, Bednarek A, Kiełbasa G, Kusiak A, Sondej T, Bednarski A, Vijayaraman P, Czarnecka D. Programmed deep septal stimulation: A novel maneuver for the diagnosis of left bundle branch capture during permanent pacing. J Cardiovasc Electrophysiol 2020; 31:485-493. [PMID: 31930753 DOI: 10.1111/jce.14352] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Revised: 12/13/2019] [Accepted: 12/23/2019] [Indexed: 11/28/2022]
Abstract
INTRODUCTION Permanent deep septal stimulation with capture of the left bundle branch (LBB) enables maintenance/restoration of the physiological activation of the left ventricle. However, it is almost always accompanied by the simultaneous engagement of the local septal myocardium, resulting in a fused (nonselective) QRS complex, therefore, confirmation of LBB capture remains difficult. METHODS We hypothesized that programmed extrastimulus technique can differentiate nonselective LBB capture from myocardial-only capture as the effective refractory period (ERP) of the myocardium is different from the ERP of the LBB. Consecutive patients undergoing pacemaker implantation underwent programmed stimulation delivered from the lead implanted in a deep septal position. Responses to programmed stimulation were categorized on the basis of sudden change in the QRS morphology of the extrastimuli, observed when ERP of LBB or myocardium was encroached upon, as: "myocardial," "selective LBB," or nondiagnostic (unequivocal change of QRS morphology). RESULTS Programmed deep septal stimulation was performed 269 times in 143 patients; in every patient with the use of a basic drive train of 600 milliseconds and in 126 patients also during intrinsic rhythm. The average septal-myocardial refractory period was shorter than the LBB refractory period: 263.0 ± 34.4 vs 318.0 ± 37.4 milliseconds. Responses diagnostic for LBB capture ("myocardial" or "selective LBB") were observed in 114 (79.7%) of patients. CONCLUSIONS A novel maneuver for the confirmation of LBB capture during deep septal stimulation was developed and found to enable definitive diagnosis by visualization of both components of the paced QRS complex: selective paced LBB QRS and myocardial-only paced QRS.
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Affiliation(s)
- Marek Jastrzębski
- First Department of Cardiology, Interventional Electrocardiology and Hypertension, Jagiellonian University Medical College, Kraków, Poland
| | - Paweł Moskal
- First Department of Cardiology, Interventional Electrocardiology and Hypertension, Jagiellonian University Medical College, Kraków, Poland
| | - Agnieszka Bednarek
- First Department of Cardiology, Interventional Electrocardiology and Hypertension, Jagiellonian University Medical College, Kraków, Poland.,Geisinger Heart Institute, Geisinger Commonwealth School of Medicine, Wilkes-Barre, Pennsylvania
| | - Grzegorz Kiełbasa
- First Department of Cardiology, Interventional Electrocardiology and Hypertension, Jagiellonian University Medical College, Kraków, Poland
| | - Aleksander Kusiak
- First Department of Cardiology, Interventional Electrocardiology and Hypertension, Jagiellonian University Medical College, Kraków, Poland.,Geisinger Heart Institute, Geisinger Commonwealth School of Medicine, Wilkes-Barre, Pennsylvania
| | - Tomasz Sondej
- First Department of Cardiology, Interventional Electrocardiology and Hypertension, Jagiellonian University Medical College, Kraków, Poland
| | - Adam Bednarski
- First Department of Cardiology, Interventional Electrocardiology and Hypertension, Jagiellonian University Medical College, Kraków, Poland
| | - Pugazhendhi Vijayaraman
- Geisinger Heart Institute, Geisinger Commonwealth School of Medicine, Wilkes-Barre, Pennsylvania
| | - Danuta Czarnecka
- First Department of Cardiology, Interventional Electrocardiology and Hypertension, Jagiellonian University Medical College, Kraków, Poland
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Jiang Z, Chang Q, Wu Y, Ji L, Zhou X, Shan Q. Typical BBB morphology and implantation depth of 3830 electrode predict QRS correction by left bundle branch area pacing. PACING AND CLINICAL ELECTROPHYSIOLOGY: PACE 2019; 43:110-117. [PMID: 31773756 DOI: 10.1111/pace.13849] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Revised: 11/18/2019] [Accepted: 11/23/2019] [Indexed: 11/26/2022]
Abstract
AIM Strict criteria of typical left bundle branch block (LBBB) can help with the prediction for cardiac resynchronization therapy response. The aim of this study is to determine whether the use of strict criteria for both LBBB and right bundle branch block (RBBB) predicts successful QRS correction (≤130 ms) by left bundle branch area pacing (LBBAP). METHODS Consecutive patients with pacemaker indications according to the present guideline who also underwent LBBAP implantation were retrospectively assessed. Inclusion criteria were patients with BBB and the baseline QRSd > 130 ms. Baseline characteristics and pacing parameters were compared between typical and atypical BBB groups. Multivariate logistic regression was used to adjust for covariates that were found in univariate analyses for successful QRS correction by LBBAP. RESULTS Seventy-three patients were enrolled. Among them, 10 (13.6%) had atypical BBB (5 LBBB and 5 RBBB) and 63 (86.4%) had typical BBB (30 LBBB and 33 RBBB). The rate of successful QRS correction was higher in typical-BBB patients (52/63; 82.5%) than that in atypical-BBB patients (3/10; 30%), P < .001. Paced QRSd was obviously narrower in patients with typical BBB than that in patients with atypical-BBB (118 ± 14 vs 133 ± 14 ms, P = .003). In multivariate logistic regression, only typical BBB morphology and the implantation depth of 3830 pacing electrode in the ventricular septum were independent predictors for successful QRS correction. CONCLUSION This study demonstrates that patients with typical-BBB morphology benefit more from LBBAP for QRS correction. Typical BBB morphology together with deep penetration of 3830 ventricular electrode in the interventricular septum predicts the success of QRS correction by LBBAP.
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Affiliation(s)
- Zhixin Jiang
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, China
| | - Qin Chang
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, China
| | - Yucheng Wu
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, China
| | - Ling Ji
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, China
| | - Xiujuan Zhou
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, China
| | - Qijun Shan
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, China
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Prospective evaluation of feasibility and electrophysiologic and echocardiographic characteristics of left bundle branch area pacing. Heart Rhythm 2019; 16:1774-1782. [DOI: 10.1016/j.hrthm.2019.05.011] [Citation(s) in RCA: 188] [Impact Index Per Article: 37.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Indexed: 01/08/2023]
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Zhang S, Zhou X, Gold MR. Left Bundle Branch Pacing. J Am Coll Cardiol 2019; 74:3039-3049. [DOI: 10.1016/j.jacc.2019.10.039] [Citation(s) in RCA: 86] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Revised: 10/15/2019] [Accepted: 10/28/2019] [Indexed: 11/24/2022]
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Left bundle branch pacing for symptomatic bradycardia: Implant success rate, safety, and pacing characteristics. Heart Rhythm 2019; 16:1758-1765. [DOI: 10.1016/j.hrthm.2019.05.014] [Citation(s) in RCA: 110] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2018] [Indexed: 11/18/2022]
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81
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Li X, Li H, Ma W, Ning X, Liang E, Pang K, Yao Y, Hua W, Zhang S, Fan X. Permanent left bundle branch area pacing for atrioventricular block: Feasibility, safety, and acute effect. Heart Rhythm 2019; 16:1766-1773. [DOI: 10.1016/j.hrthm.2019.04.043] [Citation(s) in RCA: 130] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Indexed: 02/07/2023]
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82
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Kaye G. The desire for physiological pacing: Are we there yet? J Cardiovasc Electrophysiol 2019; 30:3025-3038. [DOI: 10.1111/jce.14248] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Revised: 10/11/2019] [Accepted: 10/16/2019] [Indexed: 01/23/2023]
Affiliation(s)
- Gerry Kaye
- University of Queensland Medical School, Herston Brisbane Queensland Australia
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Hou X, Qian Z, Wang Y, Qiu Y, Chen X, Jiang H, Jiang Z, Wu H, Zhao Z, Zhou W, Zou J. Feasibility and cardiac synchrony of permanent left bundle branch pacing through the interventricular septum. Europace 2019; 21:1694-1702. [PMID: 31322651 DOI: 10.1093/europace/euz188] [Citation(s) in RCA: 157] [Impact Index Per Article: 31.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Accepted: 06/28/2019] [Indexed: 11/14/2022] Open
Abstract
Abstract
Aims
Left bundle branch pacing (LBBP) recently emerges as a novel pacing modality. We aimed to evaluate the feasibility and cardiac synchrony of permanent LBBP in bradycardia patients.
Methods and results
Left bundle branch pacing was successfully performed in 56 pacemaker-indicated patients with normal cardiac function. Left bundle branch pacing was achieved by penetrating the interventricular septum (IVS) into the left side sub-endocardium with the pacing lead. His-bundle pacing (HBP) was successfully performed in another 29 patients, 19 of whom had right ventricular septal pacing (RVSP) for backup pacing. The QRS duration, left ventricular (LV) activation time (LVAT), and mechanical synchrony using phase analysis of gated SPECT myocardial perfusion imaging were evaluated. Paced QRS duration in LBBP group was significantly shorter than that in RVSP group (117.8 ± 11.0 ms vs. 158.1 ± 11.1 ms, P < 0.0001) and wider than that in HBP group (99.7 ± 15.6 ms, P < 0.0001). Left bundle branch potential was recorded during procedure in 37 patients (67.3%). Left bundle branch pacing patients with potential had shorter LVAT than those without potential (73.1 ± 11.3 ms vs. 83.2 ± 16.8 ms, P = 0.03). Left bundle branch pacing patients with potential had similar LV mechanical synchrony to those in HBP group. R-wave amplitude and capture threshold of LBBP were 17.0 ± 6.7 mV and 0.5 ± 0.1 V, respectively at implant and remained stable during a mean follow-up of 4.5 months without lead-related complications.
Conclusion
Permanent LBBP through IVS is safe and feasible in bradycardia patients. Left bundle branch pacing could achieve favourable cardiac electrical and LV mechanical synchrony.
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Affiliation(s)
- Xiaofeng Hou
- Department of Cardiology, The First Affiliated Hospital, Nanjing Medical University, 300 Guangzhou Road, Nanjing, China
| | - Zhiyong Qian
- Department of Cardiology, The First Affiliated Hospital, Nanjing Medical University, 300 Guangzhou Road, Nanjing, China
| | - Yao Wang
- Department of Cardiology, The First Affiliated Hospital, Nanjing Medical University, 300 Guangzhou Road, Nanjing, China
| | - Yuanhao Qiu
- Department of Cardiology, The First Affiliated Hospital, Nanjing Medical University, 300 Guangzhou Road, Nanjing, China
| | - Xing Chen
- Department of Cardiology, The First Affiliated Hospital, Nanjing Medical University, 300 Guangzhou Road, Nanjing, China
| | - Hai Jiang
- Department of Cardiology, The First Affiliated Hospital, Nanjing Medical University, 300 Guangzhou Road, Nanjing, China
| | - Zeyu Jiang
- Department of Cardiology, The First Affiliated Hospital, Nanjing Medical University, 300 Guangzhou Road, Nanjing, China
| | - Hongping Wu
- Department of Cardiology, The First Affiliated Hospital, Nanjing Medical University, 300 Guangzhou Road, Nanjing, China
| | - Zhongqiang Zhao
- Department of Cardiology, The First Affiliated Hospital, Nanjing Medical University, 300 Guangzhou Road, Nanjing, China
| | - Weihua Zhou
- School of Computing, University of Southern Mississippi, Long Beach, MS, USA
| | - Jiangang Zou
- Department of Cardiology, The First Affiliated Hospital, Nanjing Medical University, 300 Guangzhou Road, Nanjing, China
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Gu M, Li H, Hu YR, Niu HX, Hua W. Cardiac resynchronization therapy using left ventricular septal pacing: An alternative to biventricular pacing? HeartRhythm Case Rep 2019; 5:426-429. [PMID: 31453095 PMCID: PMC6700673 DOI: 10.1016/j.hrcr.2019.03.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
Affiliation(s)
- Min Gu
- The Cardiac Arrhythmia Center, State Key Laboratory of Cardiovascular Disease, National Clinical Research Center of Cardiovascular Diseases, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Hui Li
- The Cardiac Arrhythmia Center, State Key Laboratory of Cardiovascular Disease, National Clinical Research Center of Cardiovascular Diseases, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yi-Ran Hu
- The Cardiac Arrhythmia Center, State Key Laboratory of Cardiovascular Disease, National Clinical Research Center of Cardiovascular Diseases, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Hong-Xia Niu
- The Cardiac Arrhythmia Center, State Key Laboratory of Cardiovascular Disease, National Clinical Research Center of Cardiovascular Diseases, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Wei Hua
- The Cardiac Arrhythmia Center, State Key Laboratory of Cardiovascular Disease, National Clinical Research Center of Cardiovascular Diseases, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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Goette A, Auricchio A, Boriani G, Braunschweig F, Terradellas JB, Burri H, Camm AJ, Crijns H, Dagres N, Deharo JC, Dobrev D, Hatala R, Hindricks G, Hohnloser SH, Leclercq C, Lewalter T, Lip GYH, Merino JL, Mont L, Prinzen F, Proclemer A, Pürerfellner H, Savelieva I, Schilling R, Steffel J, van Gelder IC, Zeppenfeld K, Zupan I, Heidbüchel H, Boveda S, Defaye P, Brignole M, Chun J, Guerra Ramos JM, Fauchier L, Svendsen JH, Traykov VB, Heinzel FR. EHRA White Paper: knowledge gaps in arrhythmia management—status 2019. Europace 2019; 21:993-994. [DOI: 10.1093/europace/euz055] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Accepted: 03/15/2019] [Indexed: 12/23/2022] Open
Abstract
Abstract
Clinicians accept that there are many unknowns when we make diagnostic and therapeutic decisions. Acceptance of uncertainty is essential for the pursuit of the profession: bedside decisions must often be made on the basis of incomplete evidence. Over the years, physicians sometimes even do not realize anymore which the fundamental gaps in our knowledge are. As clinical scientists, however, we have to halt and consider what we do not know yet, and how we can move forward addressing those unknowns. The European Heart Rhythm Association (EHRA) believes that scanning the field of arrhythmia / cardiac electrophysiology to identify knowledge gaps which are not yet the subject of organized research, should be undertaken on a regular basis. Such a review (White Paper) should concentrate on research which is feasible, realistic, and clinically relevant, and should not deal with futuristic aspirations. It fits with the EHRA mission that these White Papers should be shared on a global basis in order to foster collaborative and needed research which will ultimately lead to better care for our patients. The present EHRA White Paper summarizes knowledge gaps in the management of atrial fibrillation, ventricular tachycardia/sudden death and heart failure.
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Affiliation(s)
- Andreas Goette
- St. Vincenz-Krankenhaus GmbH, Cardiology and Intensive Care Medicine, Am Busdorf 2, Paderborn, Germany
- Working Group Molecular Electrophysiology, University Hospital Magdeburg, Magdeburg, Germany
| | - Angelo Auricchio
- Department of Cardiology, Fondazione Cardiocentro Ticino, Lugano (Ticino), Switzerland
| | - Giuseppe Boriani
- Cardiology Division, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Policlinico di Modena, Modena, Italy
| | | | | | - Haran Burri
- Department of Cardiology, University Hospital of Geneva, Geneva, Switzerland
| | - A John Camm
- St. George's, University of London, Molecular and Clinical Sciences Research Institute, London, UK
| | - Harry Crijns
- Department of Cardiology and Cardiovascular Research Institute Maastricht (CARIM), Maastricht UMC+, Maastricht, The Netherlands
| | - Nikolaos Dagres
- Department of Electrophysiology, Heart Center Leipzig at University of Leipzig, Leipzig, Germany
| | - Jean-Claude Deharo
- Department of Cardiology, Aix Marseille Université, CHU la Timone, Marseille, France
| | - Dobromir Dobrev
- University Duisburg-Essen, Institute of Pharmacology, Essen, Germany
| | - Robert Hatala
- Department of Cardiology and Angiology, National Cardiovascular Institute, NUSCH, Bratislava, Slovak Republic
| | - Gerhard Hindricks
- Department of Electrophysiology, Heart Center Leipzig at University of Leipzig, Leipzig, Germany
| | - Stefan H Hohnloser
- Division of Clinical Electrophysiology, Department of Cardiology, J.W. Goethe University, Frankfurt, Germany
| | | | - Thorsten Lewalter
- Department of Cardiology and Intensive Care, Hospital for Internal Medicine Munich South, Munich, Germany
- Department of Cardiology, University of Bonn, Bonn, Germany
| | - Gregory Y H Lip
- Liverpool Centre for Cardiovascular Science, University of Liverpool and Liverpool Heart & Chest Hospital, Liverpool, UK
- Aalborg Thrombosis Research Unit, Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
| | - Jose Luis Merino
- Hospital Universitario La Paz, Arrhythmia and Robotic EP Unit, Madrid, Spain
| | - Lluis Mont
- Department of Cardiology, Hospital Clinic, University of Barcelona, Barcelona, Spain
| | - Frits Prinzen
- Department of Physiology, Maastricht University, Maastricht, Netherlands
| | | | - Helmut Pürerfellner
- Department of Cardiology, Ordensklinikum Linz Elisabethinen, Academic Teaching Hospital, Linz, Austria
| | - Irina Savelieva
- St. George's, University of London, Molecular and Clinical Sciences Research Institute, London, UK
| | | | - Jan Steffel
- University Heart Center Zurich, Zurich, Switzerland
| | - Isabelle C van Gelder
- Department Of Cardiology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Katja Zeppenfeld
- Department of Cardiology, Leiden University Medical Center (Lumc), Leiden, Netherlands
| | - Igor Zupan
- Department Of Cardiology, University Clinical Centre Ljubljana, Ljubljana, Slovenia
| | - Hein Heidbüchel
- Antwerp University and Antwerp University Hospital, Antwerp, Belgium
| | - Serge Boveda
- Cardiology Department, Clinique Pasteur, Toulouse, France
| | - Pascal Defaye
- CHU Hôpital Albert Michalon, Unité de Rythmologie Service De Cardiologie, FR-38043 Grenoble Cedex 09, France
| | - Michele Brignole
- Department of Cardiology, Ospedali Del Tigullio, Via Don Bobbio 25, IT-16033 Lavagna (GE), Italy
| | - Jongi Chun
- CCB, Cardiology Department, Med. Klinik Iii, Markuskrankenhaus, Wilhelm Epstein Str. 4, DE-60431 Frankfurt, Germany
| | | | - Laurent Fauchier
- Service de Cardiologie, Centre Hospitalier Universitaire Trousseau et Université de Tours, Faculté de Médecine, Tours, France
| | - Jesper Hastrup Svendsen
- Department of Cardiology, The Heart Centre, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Vassil B Traykov
- Department of Invasive Electrophysiology and Cardiac Pacing, Clinic of Cardiology, Acibadem City Clinic Tokuda Hospital, Sofia, Bulgaria
| | - Frank R Heinzel
- Charité University Medicine, Campus Virchow-Klinikum, Berlin, Germany
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86
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Upadhyay GA, Vijayaraman P. How to Choose Between His Bundle Pacing and Biventricular Pacing for Cardiac Resynchronization Therapy. CURRENT CARDIOVASCULAR RISK REPORTS 2019. [DOI: 10.1007/s12170-019-0598-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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87
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Nguyên UC, Cluitmans MJM, Strik M, Luermans JG, Gommers S, Wildberger JE, Bekkers SCAM, Volders PGA, Mihl C, Prinzen FW, Vernooy K. Integration of cardiac magnetic resonance imaging, electrocardiographic imaging, and coronary venous computed tomography angiography for guidance of left ventricular lead positioning. Europace 2018; 21:626-635. [DOI: 10.1093/europace/euy292] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Accepted: 11/12/2018] [Indexed: 11/13/2022] Open
Affiliation(s)
- Uyên Châu Nguyên
- Department of Physiology, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University Medical Center, Maastricht, the Netherlands
- Department of Cardiology, CARIM, Maastricht University Medical Center, Maastricht, the Netherlands
| | - Matthijs J M Cluitmans
- Department of Cardiology, CARIM, Maastricht University Medical Center, Maastricht, the Netherlands
| | - Marc Strik
- Department of Cardiology, CARIM, Maastricht University Medical Center, Maastricht, the Netherlands
| | - Justin G Luermans
- Department of Cardiology, CARIM, Maastricht University Medical Center, Maastricht, the Netherlands
| | - Suzanne Gommers
- Department of Radiology, CARIM, Maastricht University Medical Center, Maastricht, the Netherlands
| | - Joachim E Wildberger
- Department of Radiology, CARIM, Maastricht University Medical Center, Maastricht, the Netherlands
| | - Sebastiaan C A M Bekkers
- Department of Physiology, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University Medical Center, Maastricht, the Netherlands
- Department of Radiology, CARIM, Maastricht University Medical Center, Maastricht, the Netherlands
| | - Paul G A Volders
- Department of Cardiology, CARIM, Maastricht University Medical Center, Maastricht, the Netherlands
| | - Casper Mihl
- Department of Radiology, CARIM, Maastricht University Medical Center, Maastricht, the Netherlands
| | - Frits W Prinzen
- Department of Physiology, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University Medical Center, Maastricht, the Netherlands
| | - Kevin Vernooy
- Department of Cardiology, CARIM, Maastricht University Medical Center, Maastricht, the Netherlands
- Department of Cardiology, Radboud University Medical Center, Nijmegen, the Netherlands
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88
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Qian Z, Zou F, Wang Y, Qiu Y, Chen X, Jiang H, Hou X. Permanent His bundle pacing in heart failure patients: A systematic review and meta-analysis. PACING AND CLINICAL ELECTROPHYSIOLOGY: PACE 2018; 42:139-145. [PMID: 30515877 DOI: 10.1111/pace.13565] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2018] [Revised: 11/27/2018] [Accepted: 11/28/2018] [Indexed: 11/28/2022]
Abstract
BACKGROUND Cardiac resynchronization therapy (CRT) is the standard-of-care therapy for the patients with heart failure and left ventricular (LV) dyssynchrony. However, approximately 30% of the patients show no response. Recent studies have shown that His bundle pacing (HBP) could be an alternative for the patients with CRT indications. The purpose of this study was to evaluate the efficacy of HBP in patients with heart failure. METHODS We searched PubMed and Embase databases for studies evaluating HBP in patients with heart failure and LV dyssynchrony. The successful rate of implantation, QRS duration, pacing threshold, LV function at baseline and follow-up, and mortality rates were extracted and summarized. RESULTS Eleven studies including 494 patients were included in this analysis. The overall successful rate for implantation was 82.4%. The main indications for HBP were CRT candidates and cardiomyopathy with atrial fibrillation undergoing atrioventricular node ablation. Permanent HBP resulted in narrow QRS duration of 116.3 ± 13.9 ms after implantation. LV functions, including echocardiographic parameters and clinical outcomes, significantly improved at follow-up (P < 0.001). However, there was a trend of increased capture and bundle branch block correction thresholds at follow-up compared to baseline (P = 0.01 and 0.02, respectively). During a mean follow-up of 23.7 months, 5.9% of the patients experienced heart failure-related hospitalization and the mortality rate was 9.1%. CONCLUSION Permanent HBP has shown promising results for heart failure patients in small observational studies. Randomized controlled trials are needed to assess the efficacy of HBP in these patients.
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Affiliation(s)
- Zhiyong Qian
- Department of Cardiology, First Affiliated Hospital, Nanjing Medical University, Nanjing
| | - Fengwei Zou
- Georgetown University School of Medicine, Washington, Washington D.C
| | - Yao Wang
- Department of Cardiology, First Affiliated Hospital, Nanjing Medical University, Nanjing
| | - Yuanhao Qiu
- Department of Cardiology, First Affiliated Hospital, Nanjing Medical University, Nanjing
| | - Xing Chen
- Department of Cardiology, First Affiliated Hospital, Nanjing Medical University, Nanjing
| | - Hai Jiang
- Department of Cardiology, First Affiliated Hospital, Nanjing Medical University, Nanjing
| | - Xiaofeng Hou
- Department of Cardiology, First Affiliated Hospital, Nanjing Medical University, Nanjing
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89
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Paton MF, Witte KK. Heart failure and right ventricular pacing - how to avoid the need for cardiac resynchronization therapy. Expert Rev Med Devices 2018; 16:35-43. [PMID: 30477355 DOI: 10.1080/17434440.2019.1552133] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
INTRODUCTION Heart failure (HF) is a common finding in patients with pacemakers implanted for bradycardia, with cross-sectional and longitudinal studies contributing to the growing consensus that right ventricular pacing can cause adverse cardiac remodeling and left ventricular systolic dysfunction increasing the risk of hospitalization and death. An unselected approach using cardiac resynchronization therapy from the time of first implant in patients with heart block has produced equivocal results. Contemporary research has therefore begun to focus on the stratification of patients' risk of pacemaker-associated impairment to permit focused, personalized management. AREAS COVERED The present review will describe the incidence and relevance of HF in the pacemaker population and discuss current management options for such patients. EXPERT COMMENTARY At present there are few contemporary data to guide the identification of patients with and at risk of pacemaker-associated cardiac remodeling and dysfunction. Emphasis must be placed on precise and personalized treatment approaches which currently remain under-investigated due to a number of challenges, for example, small sample sizes, limited clarity on programmed settings, and short follow-up periods.
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Affiliation(s)
- Maria F Paton
- a Leeds Institute of Cardiovascular and Metabolic Medicine , University of Leeds , Leeds , UK
| | - Klaus K Witte
- a Leeds Institute of Cardiovascular and Metabolic Medicine , University of Leeds , Leeds , UK
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90
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Strik M, Ploux S, Huntjens PR, Nguyên UC, Frontera A, Eschalier R, Dubois R, Ritter P, Klotz N, Vernooy K, Haïssaguerre M, Crijns HJ, Prinzen FW, Bordachar P. Response to cardiac resynchronization therapy is determined by intrinsic electrical substrate rather than by its modification. Int J Cardiol 2018; 270:143-148. [DOI: 10.1016/j.ijcard.2018.06.005] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Revised: 05/24/2018] [Accepted: 06/04/2018] [Indexed: 11/29/2022]
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91
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Sieniewicz BJ, Gould J, Porter B, Sidhu BS, Behar JM, Claridge S, Niederer S, Rinaldi CA. Optimal site selection and image fusion guidance technology to facilitate cardiac resynchronization therapy. Expert Rev Med Devices 2018; 15:555-570. [PMID: 30019954 PMCID: PMC6178093 DOI: 10.1080/17434440.2018.1502084] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Accepted: 07/12/2018] [Indexed: 12/30/2022]
Abstract
INTRODUCTION Cardiac resynchronization therapy (CRT) has emerged as one of the few effective treatments for heart failure. However, up to 50% of patients derive no benefit. Suboptimal left ventricle (LV) lead position is a potential cause of poor outcomes while targeted lead deployment has been associated with enhanced response rates. Image-fusion guidance systems represent a novel approach to CRT delivery, allowing physicians to both accurately track and target a specific location during LV lead deployment. AREAS COVERED This review will provide a comprehensive evaluation of how to define the optimal pacing site. We will evaluate the evidence for delivering targeted LV stimulation at sites displaying favorable viability or advantageous mechanical or electrical properties. Finally, we will evaluate several emerging image-fusion guidance systems which aim to facilitate optimal site selection during CRT. EXPERT COMMENTARY Targeted LV lead deployment is associated with reductions in morbidity and mortality. Assessment of tissue characterization and electrical latency are critical and can be achieved in a number of ways. Ultimately, the constraints of coronary sinus anatomy have forced the exploration of novel means of delivering CRT including endocardial pacing which hold promise for the future of CRT delivery.
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Affiliation(s)
- Benjamin J. Sieniewicz
- Division of Imaging Sciences and Biomedical Engineering, King’s College London, London, United Kingdom
- Cardiology Department, Guys and St Thomas’ NHS Foundation Trust, London, United Kingdom
| | - Justin Gould
- Division of Imaging Sciences and Biomedical Engineering, King’s College London, London, United Kingdom
- Cardiology Department, Guys and St Thomas’ NHS Foundation Trust, London, United Kingdom
| | - Bradley Porter
- Division of Imaging Sciences and Biomedical Engineering, King’s College London, London, United Kingdom
- Cardiology Department, Guys and St Thomas’ NHS Foundation Trust, London, United Kingdom
| | - Baldeep S Sidhu
- Division of Imaging Sciences and Biomedical Engineering, King’s College London, London, United Kingdom
- Cardiology Department, Guys and St Thomas’ NHS Foundation Trust, London, United Kingdom
| | - Jonathan M Behar
- Division of Imaging Sciences and Biomedical Engineering, King’s College London, London, United Kingdom
- Cardiology Department, Guys and St Thomas’ NHS Foundation Trust, London, United Kingdom
| | - Simon Claridge
- Division of Imaging Sciences and Biomedical Engineering, King’s College London, London, United Kingdom
- Cardiology Department, Guys and St Thomas’ NHS Foundation Trust, London, United Kingdom
| | - Steve Niederer
- Division of Imaging Sciences and Biomedical Engineering, King’s College London, London, United Kingdom
| | - Christopher A. Rinaldi
- Division of Imaging Sciences and Biomedical Engineering, King’s College London, London, United Kingdom
- Cardiology Department, Guys and St Thomas’ NHS Foundation Trust, London, United Kingdom
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92
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Visualisation of coronary venous anatomy by computed tomography angiography prior to cardiac resynchronisation therapy implantation. Neth Heart J 2018; 26:433-444. [PMID: 30030750 PMCID: PMC6115304 DOI: 10.1007/s12471-018-1132-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
Abstract
BACKGROUND The purpose of this study was to illustrate the additive value of computed tomography angiography (CTA) for visualisation of the coronary venous anatomy prior to cardiac resynchronisation therapy (CRT) implantation. METHODS Eighteen patients planned for CRT implantation were prospectively included. A specific CTA protocol designed for visualisation of the coronary veins was carried out on a third-generation dual-source CT platform. Coronary veins were semi-automatically segmented to construct a 3D model. CTA-derived coronary venous anatomy was compared with intra-procedural fluoroscopic angiography (FA) in right and left anterior oblique views. RESULTS Coronary venous CTA was successfully performed in all 18 patients. CRT implantation and FA were performed in 15 patients. A total of 62 veins were visualised; the number of veins per patient was 3.8 (range: 2-5). Eighty-five per cent (53/62) of the veins were visualised on both CTA and FA, while 10% (6/62) were visualised on CTA only, and 5% (3/62) on FA only. Twenty-two veins were present on the lateral or inferolateral wall; of these, 95% (21/22) were visualised by CTA. A left-sided implantation was performed in 13 patients, while a right-sided implantation was performed in the remaining 2 patients because of a persistent left-sided superior vena cava with no left innominate vein on CTA. CONCLUSION Imaging of the coronary veins by CTA using a designated protocol is technically feasible and facilitates the CRT implantation approach, potentially improving the outcome.
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93
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Rinaldi CA, Auricchio A, Prinzen FW. Left ventricular endocardial pacing for the critically ill. Intensive Care Med 2018; 44:915-917. [PMID: 29350240 DOI: 10.1007/s00134-018-5062-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Accepted: 01/11/2018] [Indexed: 11/26/2022]
Affiliation(s)
- C A Rinaldi
- Cardiology Department, Guy's and St Thomas' NHS Trust, London, SE1 7EH, UK.
| | - A Auricchio
- Fondazione Cardiocentro Ticino, Lugano, Switzerland
| | - F W Prinzen
- Department of Physiology, Cardiovascular Research Institute Maastricht, Maastricht, The Netherlands
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94
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Burri H, Müller H, Kobza R, Sticherling C, Ammann P, Zerlik H, Stettler C, Klersy C, Prinzen F, Auricchio A. RIght VErsus Left Apical transvenous pacing for bradycardia: Results of the RIVELA randomized study. Indian Pacing Electrophysiol J 2017; 17:171-175. [PMID: 29110936 PMCID: PMC5784604 DOI: 10.1016/j.ipej.2017.10.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2017] [Accepted: 10/24/2017] [Indexed: 11/25/2022] Open
Abstract
Aims To compare cardiac function when pacing from the right or left ventricular apex in patients with preserved left ventricular systolic function, at 1-year follow-up. Methods Prospective, multicentre centre randomizing conventional right ventricular apical (RVA) versus left ventricular apical (LVA) pacing using a coronary sinus lead in patients requiring ventricular pacing for bradycardia. Follow-up was performed using 3D-echocardiography at 6 and 12 months. Results A total of 36 patients (age 75.4 ± 8.7 years, 21 males) were enrolled (17 patients in the RVA group and 19 patients in the LVA group). A right ventricular lead was implanted in 8 patients in the LVA group, mainly because of high capture thresholds. There were no differences in the primary endpoint of LVEF at 1 year (60.4 ± 7.1% vs 62.1 ± 7.2% for the RVA and LVA groups respectively, P = 0.26) nor in any of the secondary endpoints (left ventricular dimensions, left ventricular diastolic function, right ventricular systolic function and tricuspid/mitral insufficiency). LVEF did not change significantly over follow-up in either group. Capture thresholds were significantly higher in the LVA group, and two patients had unexpected loss of capture of the coronary sinus lead during follow-up. Conclusions Left univentricular pacing seems to be comparable to conventional RVA pacing in terms of ventricular function at up to 1 year follow-up, and is an option to consider in selected patients (e.g. those with a tricuspid valve prosthesis).
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Affiliation(s)
| | | | | | | | | | | | | | - Catherine Klersy
- Service of Biometry & Clinical Epidemiology, Research Department, IRCCS Fondazione Policlinico San Matteo, Pavia, Italy
| | - Frits Prinzen
- Department of Physiology, Cardiovascular Research Institute, University of Maastricht, The Netherlands
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95
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Auricchio A, Prinzen FW. Enhancing Response in the Cardiac Resynchronization Therapy Patient. JACC Clin Electrophysiol 2017; 3:1203-1219. [DOI: 10.1016/j.jacep.2017.08.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Revised: 08/02/2017] [Accepted: 08/10/2017] [Indexed: 12/17/2022]
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96
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Auricchio A. It Is Time for a Wake-Up Call. JACC Clin Electrophysiol 2017; 3:815-817. [DOI: 10.1016/j.jacep.2017.05.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2017] [Accepted: 05/04/2017] [Indexed: 10/19/2022]
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97
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98
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Spragg DD. Left Ventricular Endocardial Pacing for Cardiac Resynchronization Therapy. JACC Clin Electrophysiol 2016; 2:423-425. [DOI: 10.1016/j.jacep.2016.03.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Accepted: 03/10/2016] [Indexed: 11/26/2022]
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99
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Rademakers LM, van Hunnik A, Kuiper M, Vernooy K, van Gelder B, Bracke FA, Prinzen FW. A Possible Role for Pacing the Left Ventricular Septum in Cardiac Resynchronization Therapy. JACC Clin Electrophysiol 2016; 2:413-422. [DOI: 10.1016/j.jacep.2016.01.010] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Revised: 01/11/2016] [Accepted: 01/21/2016] [Indexed: 11/30/2022]
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