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Dong M, Liang C, Cheng G. The Loop Technique in Cardiac Resynchronization Therapy: A Prospective Cohort Study. Int J Gen Med 2024; 17:3711-3717. [PMID: 39219670 PMCID: PMC11363949 DOI: 10.2147/ijgm.s482227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2024] [Accepted: 08/21/2024] [Indexed: 09/04/2024] Open
Abstract
Objective A new approach called the loop technique has been proven safe and effective for repeated intraoperative transvenous left ventricular (LV) lead dislocations during cardiac resynchronization therapy (CRT) in a 3-year follow-up. This study aimed to report on the 5-year safety and effectiveness of the loop technique. Methods This study was a prospective cohort study. Forty-four patients who underwent CRT device implantation at the Cardiology Department of Shaanxi Provincial People's Hospital between January 2013 and June 2019 were included. Data on patient demographics, medical history, laboratory test results, and echocardiography images at admission were collected. The loop technique was performed with repeated intraoperative dislocations of the LV lead. The intraoperative CRT parameters were also recorded. All patients were followed for 5 years. Several auxiliary examinations were performed during follow-up. Results The 44 patients were divided into the traditional operation group (n=36, 81.8%) and loop technique group (n=8, 18.2%). The baseline patient characteristics were almost balanced. During the 5-year follow-up, 8 (22.2%) patients in the traditional operation group and 2 (25.0%) patients in the loop technique group died. No lead dislocation or other complications related to CRT were observed. There were no significant differences in mortality rate (P=0.87), cardiac function (P=0.56), echocardiographic indices, threshold (P=0.58), or impedance (P=0.22) of the LV lead. There were no significant differences in the threshold and impedance between postoperative, 3-year, and 5-year follow-ups in the loop technique group (P=0.53). Conclusion The loop technique is an ideal solution for repeated intraoperative LV lead dislocation during CRT implantation.
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Affiliation(s)
- Mengya Dong
- Department of Cardiovascular Medicine, Shaanxi Provincial People’s Hospital, Xi’an, People’s Republic of China
| | - Chenyuan Liang
- Department of Cardiovascular Medicine, Shaanxi Provincial People’s Hospital, Xi’an, People’s Republic of China
| | - Gong Cheng
- Department of Cardiovascular Medicine, Honghui Hospital, Xi’an Jiaotong University, Xi’an, People’s Republic of China
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2
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Nguyên UC, Prinzen FW, Vernooy K. Left ventricular lead placement in cardiac resynchronization therapy: Current data and potential explanations for the lack of benefit. Heart Rhythm 2024; 21:197-205. [PMID: 37806647 DOI: 10.1016/j.hrthm.2023.10.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 09/22/2023] [Accepted: 10/02/2023] [Indexed: 10/10/2023]
Abstract
The present article reviews the literature on image-guided cardiac resynchronization therapy (CRT) studies. Improved outcome to CRT has been associated with the placement of a left ventricular (LV) lead in the latest activated segment free from scar. The majority of randomized controlled trials investigating guided LV lead implantation did not show superiority over conventional implantation approaches. Several factors may contribute to this paradoxical observation, including inclusion criteria favoring patients with left bundle branch block who already respond well to conventional anatomical LV lead implantation, differences in activation wavefronts during simultaneous right ventricular and LV pacing, incorrect definition of target regions, and limitations in coronary venous anatomy that prevent access to target regions that are detected by imaging. It is imperative that exclusion of patients lacking access to target regions from these studies would lead to larger benefit of image-guided CRT.
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Affiliation(s)
- Uyên Châu Nguyên
- Department of Physiology, Maastricht University Medical Center (MUMC+), Maastricht, The Netherlands; Department of Cardiology, Maastricht University Medical Center (MUMC+), Maastricht, The Netherlands.
| | - Frits W Prinzen
- Department of Physiology, Maastricht University Medical Center (MUMC+), Maastricht, The Netherlands
| | - Kevin Vernooy
- Department of Cardiology, Maastricht University Medical Center (MUMC+), Maastricht, The Netherlands
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3
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Chousou PA, Chattopadhyay RK, Matthews GDK, Vassiliou VS, Pugh PJ. Location, Location, Location: A Pilot Study to Compare Electrical with Echocardiographic-Guided Targeting of Left Ventricular Lead Placement in Cardiac Resynchronisation Therapy. Diagnostics (Basel) 2024; 14:299. [PMID: 38337816 PMCID: PMC10855693 DOI: 10.3390/diagnostics14030299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 01/21/2024] [Accepted: 01/25/2024] [Indexed: 02/12/2024] Open
Abstract
Introduction: Cardiac resynchronisation therapy is ineffective in 30-40% of patients with heart failure with reduced ejection fraction. Targeting non-scarred myocardium by selecting the site of latest mechanical activation using echocardiography has been suggested to improve outcomes but at the cost of increased resource utilisation. The interval between the beginning of the QRS complex and the local LV lead electrogram (QLV) might represent an alternative electrical marker. Aims: To determine whether the site of latest myocardial electrical and mechanical activation are concordant. Methods: This was a single-centre, prospective pilot study, enrolling patients between March 2019 and June 2021. Patients underwent speckle-tracking echocardiography (STE) prior to CRT implantation. Intra-procedural QLV measurement and R-wave amplitude were performed in a blinded fashion at all accessible coronary sinus branches. Pearson's correlation coefficient and Cohen's Kappa coefficient were utilised for the comparison of electrical and echocardiographic parameters. Results: A total of 20 subjects had complete data sets. In 15, there was a concordance at the optimal site between the electrically targeted region and the mechanically targeted region; in four, the regions were adjacent (within one segment). There was discordance (≥2 segments away) in only one case between the two methods of targeting. There was a statistically significant increase in procedure time and fluoroscopy duration using the intraprocedural QLV strategy. There was no statistical correlation between the quantitative electrical and echocardiographic data. Conclusions: A QLV-guided approach to targeting LV lead placement appears to be a potential alternative to the established echocardiographic-guided technique. However, it is associated with prolonged fluoroscopy and overall procedure time.
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Affiliation(s)
- Panagiota A. Chousou
- Norwich Medical School, University of East Anglia, Norwich NR4 7TJ, UK
- Department of Cardiology, Addenbrookes Hospital, Cambridge University Hospitals NHS Foundation Trust, Cambridge CB2 0QQ, UK
| | - Rahul K. Chattopadhyay
- Norwich Medical School, University of East Anglia, Norwich NR4 7TJ, UK
- Department of Cardiology, Addenbrookes Hospital, Cambridge University Hospitals NHS Foundation Trust, Cambridge CB2 0QQ, UK
| | | | | | - Peter J. Pugh
- Norwich Medical School, University of East Anglia, Norwich NR4 7TJ, UK
- Department of Cardiology, Addenbrookes Hospital, Cambridge University Hospitals NHS Foundation Trust, Cambridge CB2 0QQ, UK
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Eerenberg F, Luermans J, Lumens J, Nguyên UC, Vernooy K, van Stipdonk A. Exploring QRS Area beyond Patient Selection in CRT-Can It Guide Left Ventricular Lead Placement? J Cardiovasc Dev Dis 2024; 11:18. [PMID: 38248888 PMCID: PMC10816025 DOI: 10.3390/jcdd11010018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 01/04/2024] [Accepted: 01/04/2024] [Indexed: 01/23/2024] Open
Abstract
Vectorcardiographic QRS area is a promising tool for patient selection and implantation guidance in cardiac resynchronization therapy (CRT). Research has mainly focused on the role of QRS area in patient selection for CRT. Recently, QRS area has been proposed as a tool to guide left ventricular lead placement in CRT. Theoretically, vector-based electrical information of ventricular fusion pacing, calculated from the basic 12-lead ECG, can give real-time insight into the extent of resynchronization at any LV lead position, as well as any selected electrode on the LV lead. The objective of this review is to provide an overview of the background of vectorcardiographic QRS area and its potential in optimizing LV lead location in order to optimize the benefits of CRT.
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Affiliation(s)
- Frederieke Eerenberg
- Department of Cardiology, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University Medical Center+, 6229 ER Maastricht, The Netherlands; (J.L.); (U.C.N.); (K.V.); (A.v.S.)
| | - Justin Luermans
- Department of Cardiology, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University Medical Center+, 6229 ER Maastricht, The Netherlands; (J.L.); (U.C.N.); (K.V.); (A.v.S.)
| | - Joost Lumens
- Cardiovascular Research Institute Maastricht (CARIM), University Maastricht (UM), 6229 ER Maastricht, The Netherlands;
| | - Uyên Châu Nguyên
- Department of Cardiology, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University Medical Center+, 6229 ER Maastricht, The Netherlands; (J.L.); (U.C.N.); (K.V.); (A.v.S.)
| | - Kevin Vernooy
- Department of Cardiology, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University Medical Center+, 6229 ER Maastricht, The Netherlands; (J.L.); (U.C.N.); (K.V.); (A.v.S.)
| | - Antonius van Stipdonk
- Department of Cardiology, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University Medical Center+, 6229 ER Maastricht, The Netherlands; (J.L.); (U.C.N.); (K.V.); (A.v.S.)
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5
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Stankovic I, Voigt JU, Burri H, Muraru D, Sade LE, Haugaa KH, Lumens J, Biffi M, Dacher JN, Marsan NA, Bakelants E, Manisty C, Dweck MR, Smiseth OA, Donal E. Imaging in patients with cardiovascular implantable electronic devices: part 1-imaging before and during device implantation. A clinical consensus statement of the European Association of Cardiovascular Imaging (EACVI) and the European Heart Rhythm Association (EHRA) of the ESC. Eur Heart J Cardiovasc Imaging 2023; 25:e1-e32. [PMID: 37861372 DOI: 10.1093/ehjci/jead272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2023] [Revised: 10/15/2023] [Accepted: 10/15/2023] [Indexed: 10/21/2023] Open
Abstract
More than 500 000 cardiovascular implantable electronic devices (CIEDs) are implanted in the European Society of Cardiology countries each year. The role of cardiovascular imaging in patients being considered for CIED is distinctly different from imaging in CIED recipients. In the former group, imaging can help identify specific or potentially reversible causes of heart block, the underlying tissue characteristics associated with malignant arrhythmias, and the mechanical consequences of conduction delays and can also aid challenging lead placements. On the other hand, cardiovascular imaging is required in CIED recipients for standard indications and to assess the response to device implantation, to diagnose immediate and delayed complications after implantation, and to guide device optimization. The present clinical consensus statement (Part 1) from the European Association of Cardiovascular Imaging, in collaboration with the European Heart Rhythm Association, provides comprehensive, up-to-date, and evidence-based guidance to cardiologists, cardiac imagers, and pacing specialists regarding the use of imaging in patients undergoing implantation of conventional pacemakers, cardioverter defibrillators, and resynchronization therapy devices. The document summarizes the existing evidence regarding the use of imaging in patient selection and during the implantation procedure and also underlines gaps in evidence in the field. The role of imaging after CIED implantation is discussed in the second document (Part 2).
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Affiliation(s)
- Ivan Stankovic
- Clinical Hospital Centre Zemun, Department of Cardiology, Faculty of Medicine, University of Belgrade, Vukova 9, 11080 Belgrade, Serbia
| | - Jens-Uwe Voigt
- Department of Cardiovascular Diseases, University Hospitals Leuven/Department of Cardiovascular Sciences, Catholic University of Leuven, Herestraat 49, Leuven 3000, Belgium
| | - Haran Burri
- Cardiac Pacing Unit, Cardiology Department, University Hospital of Geneva, Geneva, Switzerland
| | - Denisa Muraru
- Department of Medicine and Surgery, University of Milano-Bicocca, Milan, Italy
- Department of Cardiology, Istituto Auxologico Italiano, IRCCS, Milan, Italy
| | - Leyla Elif Sade
- University of Pittsburgh Medical Center, Heart and Vascular Institute, Pittsburgh, PA, USA
- Department of Cardiology, University of Baskent, Ankara, Turkey
| | - Kristina Hermann Haugaa
- ProCardio Center for Innovation, Department of Cardiology, Oslo University Hospital, Rikshospitalet, Oslo, Norway
- Faculty of Medicine Karolinska Institutet AND Cardiovascular Division, Karolinska University Hospital, StockholmSweden
| | - Joost Lumens
- Cardiovascular Research Center Maastricht (CARIM), Maastricht University, Maastricht, The Netherlands
| | - Mauro Biffi
- Department of Cardiology, IRCCS, Azienda Ospedaliero Universitaria Di Bologna, Policlinico Di S.Orsola, Bologna, Italy
| | - Jean-Nicolas Dacher
- Department of Radiology, Normandie University, UNIROUEN, INSERM U1096 - Rouen University Hospital, F 76000 Rouen, France
| | - Nina Ajmone Marsan
- Department of Cardiology, Heart and Lung Center, Leiden University Medical Center, Leiden, The Netherlands
| | - Elise Bakelants
- Cardiac Pacing Unit, Cardiology Department, University Hospital of Geneva, Geneva, Switzerland
| | - Charlotte Manisty
- Department of Cardiovascular Imaging, Barts Heart Centre, Barts Health NHS Trust, London, UK
- Institute of Cardiovascular Science, University College London, London, UK
| | - Marc R Dweck
- Centre for Cardiovascular Science, University of Edinburgh, Little France Crescent, Edinburgh EH16 4SB, United Kingdom
| | - Otto A Smiseth
- Institute for Surgical Research, Oslo University Hospital and University of Oslo, Oslo, Norway
| | - Erwan Donal
- University of Rennes, CHU Rennes, Inserm, LTSI-UMR 1099, Rennes, France
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6
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Kronborg MB, Frausing MHJP, Svendsen JH, Johansen JB, Riahi S, Haarbo J, Poulsen SH, Eiskjær H, Køber L, Øvrehus K, Sommer AM, Schou M, Nørgaard BL, Risum N, Poulsen MK, Søgaard P, Sandgaard N, Kofoed KF, Hansen TF, Graff C, Pedersen SS, Skals RG, Nielsen JC. Does targeted positioning of the left ventricular pacing lead towards the latest local electrical activation in cardiac resynchronization therapy reduce the incidence of death or hospitalization for heart failure? Am Heart J 2023; 263:112-122. [PMID: 37220821 DOI: 10.1016/j.ahj.2023.05.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 05/04/2023] [Accepted: 05/15/2023] [Indexed: 05/25/2023]
Abstract
BACKGROUND Cardiac resynchronization therapy (CRT) improves symptoms, health-related quality of life and long-term survival in patients with systolic heart failure (HF) and shortens QRS duration. However, up to one third of patients attain no measurable clinical benefit from CRT. An important determinant of clinical response is optimal choice in left ventricular (LV) pacing site. Observational data have shown that achieving an LV lead position at a site of late electrical activation is associated with better clinical and echocardiographic outcomes compared to standard placement, but mapping-guided LV lead placement towards the site of latest electrical activation has never been investigated in a randomized controlled trial (RCT). The purpose of this study was to evaluate the effect of targeted positioning of the LV lead towards the latest electrically activated area. We hypothesize that this strategy is superior to standard LV lead placement. METHODS The DANISH-CRT trial is a national, double-blinded RCT (ClinicalTrials.gov NCT03280862). A total of 1,000 patients referred for a de novo CRT implantation or an upgrade to CRT from right ventricular pacing will be randomized 1:1 to receive conventional LV lead positioning preferably in a nonapical posterolateral branch of the coronary sinus (CS) (control group) or targeted positioning of the LV lead to the CS branch with the latest local electrical LV activation (intervention group). In the intervention group, late activation will be determined using electrical mapping of the CS. The primary endpoint is a composite of death and nonplanned HF hospitalization. Patients are followed for a minimum of 2 years and until 264 primary endpoints occurred. Analyses will be conducted according to the intention-to-treat principle. Enrollment for this trial began in March 2018, and per April 2023, a total of 823 patients have been included. Enrollment is expected to be complete by mid-2024. CONCLUSIONS The DANISH-CRT trial will clarify whether mapping-guided positioning of the LV lead according to the latest local electrical activation in the CS is beneficial for patients in terms of reducing the composite endpoint of death or nonplanned hospitalization for heart failure. Results from this trial are expected to impact future guidelines on CRT. CLINICALTRIALS GOV IDENTIFIER NCT03280862.
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Affiliation(s)
- Mads Brix Kronborg
- Department of Cardiology, Aarhus University Hospital, Aarhus, Denmark; Department of Clinical Medicine, Aarhus University, Aarhus, Denmark.
| | - Maria Hee Jung Park Frausing
- Department of Cardiology, Aarhus University Hospital, Aarhus, Denmark; Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Jesper Hastrup Svendsen
- Department of Cardiology, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark; Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | | | - Sam Riahi
- Department of Cardiology, Aalborg University Hospital, Aalborg, Denmark; Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
| | - Jens Haarbo
- Department of Cardiology, Copenhagen University Hospital - Herlev and Gentofte, Copenhagen, Denmark
| | - Steen Hvitfeldt Poulsen
- Department of Cardiology, Aarhus University Hospital, Aarhus, Denmark; Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Hans Eiskjær
- Department of Cardiology, Aarhus University Hospital, Aarhus, Denmark; Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Lars Køber
- Department of Cardiology, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Kristian Øvrehus
- Department of Cardiology, Odense University Hospital, Odense, Denmark
| | | | - Morten Schou
- Department of Cardiology, Copenhagen University Hospital - Herlev and Gentofte, Copenhagen, Denmark
| | - Bjarne Linde Nørgaard
- Department of Cardiology, Aarhus University Hospital, Aarhus, Denmark; Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Niels Risum
- Department of Cardiology, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | | | - Peter Søgaard
- Department of Cardiology, Aalborg University Hospital, Aalborg, Denmark
| | - Niels Sandgaard
- Department of Cardiology, Odense University Hospital, Odense, Denmark
| | - Klaus F Kofoed
- Department of Cardiology, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark; Department of Radiology, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark; Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Thomas Fritz Hansen
- Department of Cardiology, Copenhagen University Hospital - Herlev and Gentofte, Copenhagen, Denmark
| | - Claus Graff
- Department of Health Science and Technology, Aalborg University, Aalborg, Denmark
| | - Susanne S Pedersen
- Department of Cardiology, Odense University Hospital, Odense, Denmark; Department of Psychology, University of Southern Denmark, Odense, Denmark
| | | | - Jens Cosedis Nielsen
- Department of Cardiology, Aarhus University Hospital, Aarhus, Denmark; Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
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7
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Fyenbo DB, Bjerre HL, Frausing MHJP, Stephansen C, Sommer A, Borgquist R, Bakos Z, Glikson M, Milman A, Beinart R, Kockova R, Sedlacek K, Wichterle D, Saba S, Jain S, Shalaby A, Kronborg MB, Nielsen JC. Targeted left ventricular lead positioning to the site of latest activation in cardiac resynchronization therapy: a systematic review and meta-analysis. Europace 2023; 25:euad267. [PMID: 37695316 PMCID: PMC10507669 DOI: 10.1093/europace/euad267] [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: 06/25/2023] [Accepted: 09/06/2023] [Indexed: 09/12/2023] Open
Abstract
AIMS Several studies have evaluated the use of electrically- or imaging-guided left ventricular (LV) lead placement in cardiac resynchronization therapy (CRT) recipients. We aimed to assess evidence for a guided strategy that targets LV lead position to the site of latest LV activation. METHODS AND RESULTS A systematic review and meta-analysis was performed for randomized controlled trials (RCTs) until March 2023 that evaluated electrically- or imaging-guided LV lead positioning on clinical and echocardiographic outcomes. The primary endpoint was a composite of all-cause mortality and heart failure hospitalization, and secondary endpoints were quality of life, 6-min walk test (6MWT), QRS duration, LV end-systolic volume, and LV ejection fraction. We included eight RCTs that comprised 1323 patients. Six RCTs compared guided strategy (n = 638) to routine (n = 468), and two RCTs compared different guiding strategies head-to-head: electrically- (n = 111) vs. imaging-guided (n = 106). Compared to routine, a guided strategy did not significantly reduce the risk of the primary endpoint after 12-24 (RR 0.83, 95% CI 0.52-1.33) months. A guided strategy was associated with slight improvement in 6MWT distance after 6 months of follow-up of absolute 18 (95% CI 6-30) m between groups, but not in remaining secondary endpoints. None of the secondary endpoints differed between the guided strategies. CONCLUSION In this study, a CRT implantation strategy that targets the latest LV activation did not improve survival or reduce heart failure hospitalizations.
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Affiliation(s)
- Daniel Benjamin Fyenbo
- Department of Cardiology, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200 Aarhus N, Denmark
- Department of Clinical Medicine, Aarhus University, Palle Juul-Jensens Boulevard 11, 8200 Aarhus N, Denmark
- Diagnostic Center, Silkeborg Regional Hospital, Falkevej 1A, 8600 Silkeborg, Denmark
| | - Henrik Laurits Bjerre
- Department of Cardiology, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200 Aarhus N, Denmark
- Department of Clinical Medicine, Aarhus University, Palle Juul-Jensens Boulevard 11, 8200 Aarhus N, Denmark
| | - Maria Hee Jung Park Frausing
- Department of Cardiology, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200 Aarhus N, Denmark
- Department of Clinical Medicine, Aarhus University, Palle Juul-Jensens Boulevard 11, 8200 Aarhus N, Denmark
| | - Charlotte Stephansen
- Department of Cardiology, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200 Aarhus N, Denmark
| | - Anders Sommer
- Department of Cardiology, Aalborg University Hospital, Aalborg, Denmark
| | | | - Zoltan Bakos
- Department of Cardiology, Kristianstad Hospital, Kristianstad, Sweden
| | - Michael Glikson
- Jesselson Integrated Heart Center, Shaare Zedek Medical Center, Jerusalem, Israel
- Faculty of Medicine, Hebrew University, Jerusalem, Israel
| | - Anat Milman
- Leviev Heart Institute, The Chaim Sheba Medical Center, Tel Hashomer, Israel
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Roy Beinart
- Leviev Heart Institute, The Chaim Sheba Medical Center, Tel Hashomer, Israel
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Radka Kockova
- Department of Cardiac Surgery, Na Homolce Hospital, Prague, Czech Republic
| | - Kamil Sedlacek
- 1st Department of Internal Medicine—Cardiology and Angiology, University Hospital, Hradec Králové, Czech Republic
- Faculty of Medicine, Charles University, Hradec Králové, Czech Republic
| | - Dan Wichterle
- Department of Cardiology, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Samir Saba
- Heart and Vascular Institute, Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Sandeep Jain
- Heart and Vascular Institute, Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Alaa Shalaby
- Heart and Vascular Institute, Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Mads Brix Kronborg
- Department of Cardiology, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200 Aarhus N, Denmark
- Department of Clinical Medicine, Aarhus University, Palle Juul-Jensens Boulevard 11, 8200 Aarhus N, Denmark
| | - Jens Cosedis Nielsen
- Department of Cardiology, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200 Aarhus N, Denmark
- Department of Clinical Medicine, Aarhus University, Palle Juul-Jensens Boulevard 11, 8200 Aarhus N, Denmark
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8
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Brandtvig TO, Marinko S, Farouq M, Brandt J, Mörtsell D, Wang L, Chaudhry U, Saba S, Borgquist R. Association between left ventricular lead position and intrinsic QRS morphology with regard to clinical outcome in cardiac resynchronization therapy for heart failure. Ann Noninvasive Electrocardiol 2023:e13065. [PMID: 37200452 DOI: 10.1111/anec.13065] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 03/17/2023] [Accepted: 05/02/2023] [Indexed: 05/20/2023] Open
Abstract
BACKGROUND Left ventricular (LV) lead position may be an important factor for delivering effective cardiac resynchronization therapy (CRT). We therefore aimed to evaluate the effects of LV lead position, stratified by native QRS morphology, regarding the clinical outcome. METHODS A total of 1295 CRT-implanted patients were retrospectively evaluated. LV lead position was classified as lateral, anterior, inferior, or apical, and was determined using the left and right anterior oblique X-ray views. Kaplan Meier and Cox regression were performed to evaluate the effects on all-cause mortality and heart failure hospitalization, and the potential interaction between LV lead position and native ECG morphologies. RESULTS A total of 1295 patients were included. Patients were aged 69 ± 7 years, 20% were female, 46% received a CRT-Pacemaker (vs. CRT-Defibrillator), mean LVEF was 25% ± 7%, and median follow-up was 3.3 years [IQR 1.6-5-7 years]. Eight hundred and eighty-two patients (68%) had a lateral LV lead location, 207 (16%) anterior, 155 (12%) apical, and 51 (4%) inferior. Patients with lateral LV lead position had larger QRS reduction (-13 ± 27 ms vs. -3 ± 24 ms, p < .001). Non-lateral lead location was associated with a higher risk for all-cause mortality (HR 1.34 [1.09-1.67], p = .007) and heart failure hospitalization (HR 1.25 [1.03-1.52], p = .03). This association was strongest for patients with native left or right bundle branch block, and not significant for patients with prior paced QRS or nonspecific intraventricular conduction delay. CONCLUSIONS In patients treated with CRT, non-lateral LV lead positions (including apical, anterior, and inferior positions) were associated with worse clinical outcome and less reduction of QRS duration. This association was strongest for patients with native LBBB or RBBB.
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Affiliation(s)
- Tove Olsson Brandtvig
- Department of Clinical Sciences, Lund University, Lund, Sweden
- Department of Cardiology, Arrhythmia Section, Skane University Hospital, Lund, Sweden
| | - Sofia Marinko
- Department of Clinical Sciences, Lund University, Lund, Sweden
- Department of Cardiology, Arrhythmia Section, Skane University Hospital, Lund, Sweden
| | - Maiwand Farouq
- Department of Clinical Sciences, Lund University, Lund, Sweden
- Department of Cardiology, Arrhythmia Section, Skane University Hospital, Lund, Sweden
| | - Johan Brandt
- Department of Clinical Sciences, Lund University, Lund, Sweden
- Department of Cardiology, Arrhythmia Section, Skane University Hospital, Lund, Sweden
| | - David Mörtsell
- Department of Clinical Sciences, Lund University, Lund, Sweden
- Department of Cardiology, Arrhythmia Section, Skane University Hospital, Lund, Sweden
| | - Lingwei Wang
- Department of Clinical Sciences, Lund University, Lund, Sweden
- Department of Cardiology, Arrhythmia Section, Skane University Hospital, Lund, Sweden
| | - Uzma Chaudhry
- Department of Clinical Sciences, Lund University, Lund, Sweden
- Department of Cardiology, Arrhythmia Section, Skane University Hospital, Lund, Sweden
| | - Samir Saba
- Department of Medicine, University of Pittsburgh Medical Center (UPMC), Pittsburgh, Pennsylvania, USA
| | - Rasmus Borgquist
- Department of Clinical Sciences, Lund University, Lund, Sweden
- Department of Cardiology, Arrhythmia Section, Skane University Hospital, Lund, Sweden
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Odland HH, Holm T, Cornelussen R, Kongsgård E. Determinants of the time-to-peak left ventricular dP/dt (Td) and QRS duration with different fusion strategies in cardiac resynchronization therapy. Front Cardiovasc Med 2022; 9:979581. [PMID: 36186985 PMCID: PMC9520326 DOI: 10.3389/fcvm.2022.979581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Accepted: 08/23/2022] [Indexed: 12/03/2022] Open
Abstract
Background Cardiac resynchronization therapy (CRT) is helpful in selected patients; however, responder rates rarely exceed 70%. Optimization of CRT may therefore benefit a large number of patients. Time-to-peak dP/dt (Td) is a novel marker of myocardial synergy that reflects the degree of myocardial dyssynchrony with the potential to guide and optimize treatment with CRT. Optimal electrical activation is a prerequisite for CRT to be effective. Electrical activation can be altered by changing the electrical wave-front fusion resulting from pacing to optimize resynchronization. We designed this study to understand the acute effects of different electrical wave-front fusion strategies and LV pre-/postexcitation on Td and QRS duration (QRSd). A better understanding of measuring and optimizing resynchronization can help improve the benefits of CRT. Methods Td and QRSd were measured in 19 patients undergoing a CRT implantation. Two biventricular pacing groups were compared: pacing the left ventricle (LV) with fusion with intrinsic right ventricular activation (FUSION group) and pacing the LV and right ventricle (RV) at short atrioventricular delay (STANDARD group) to avoid fusion with intrinsic RV activation. A quadripolar LV lead enabled pacing from widely separated electrodes; distal (DIST), proximal (PROX) and both electrodes combined (multipoint pacing, MPP). The LV was stimulated relative in time to RV activation (either RV pace-onset or QRS-onset), with the LV stimulated prior to (PRE), simultaneous with (SIM) or after (POST) RV activation. In addition, we analyzed the interactions of the two groups (FUSION/STANDARD) with three different electrode configurations (DIST, PROX, MPP), each paced with three different degrees of LV pre-/postexcitation (PRE, SIM, POST) in a statistical model. Results We found that FUSION provided shorter Td and QRSd than STANDARD, MPP provided shorter Td and QRSd than DIST and PROX, and SIM provided both the shortest QRSd and Td compared to PRE and POST. The interaction analysis revealed that pacing MPP with fusion with intrinsic RV activation simultaneous with the onset of the QRS complex (MPP*FUSION*SIM) shortened QRSd and Td the most compared to all other modes and configurations. The difference in QRSd and Td from their respective references were significantly correlated (β = 1, R = 0.9, p < 0.01). Conclusion Pacing modes and electrode configurations designed to optimize electrical wave-front fusion (intrinsic RV activation, LV multipoint pacing and simultaneous RV and LV activation) shorten QRSd and Td the most. As demonstrated in this study, electrical and mechanical measures of resynchronization are highly correlated. Therefore, Td can potentially serve as a marker for CRT optimization.
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Affiliation(s)
- Hans Henrik Odland
- Department of Cardiology and Pediatric Cardiology, Section for Arrhythmias, Oslo University Hospital, Oslo, Norway
- *Correspondence: Hans Henrik Odland
| | - Torbjørn Holm
- Department of Cardiology, Section for Arrhythmias, Oslo University Hospital, Oslo, Norway
| | | | - Erik Kongsgård
- Department of Cardiology, Section for Arrhythmias, Oslo University Hospital, Oslo, Norway
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10
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Allen LaPointe NM, Ali-Ahmed F, Dalgaard F, Kosinski AS, Sanders Schmidler G, Al-Khatib SM. Cardiac resynchronization therapy outcomes with left ventricular lead concordant with latest mechanical activation: A meta-analysis. Pacing Clin Electrophysiol 2022; 45:930-939. [PMID: 35687711 PMCID: PMC10752256 DOI: 10.1111/pace.14549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 05/11/2022] [Accepted: 06/05/2022] [Indexed: 11/30/2022]
Abstract
BACKGROUND For cardiac resynchronization therapy (CRT), image-guided approaches targeting left ventricular (LV) lead placement at the site of latest mechanical activation had inconsistent outcomes. We examined evidence for improved CRT outcomes when LV lead placement concordant with latest mechanical activation occurred. METHODS A review of EMBASE and PubMed was performed for randomized controlled trials or prospective observational studies from October 2008 through October 2020 comparing outcomes with concordant versus discordant LV lead placement. Meta-analyses were performed to assess the association between concordance and death, death or heart failure (HF) hospitalization, ≥ 15% reduction in LV end systolic volume (LVESV), and changes in LVESV or ejection fraction (LVEF). RESULTS From 5897 citations, nine publications (eight studies) with 1355 patients were selected; 975 with a concordant LV lead and 380 with a discordant lead. Mean age was 66-68 years, 82% were male, and 64% had ischemic cardiomyopathy. Meta-analyses demonstrated a statistically significant reduction in death/HF hospitalization at 2 years (OR 0.38; 95% CI 0.16, 0.92) and LVESV at 6 months (mean difference [MD] -13.4%; 95% CI -6.7%, -20.0%), and an increase in LVEF (MD 4.03; 95% CI 0.77, 7.30) with the concordant LV lead. There were trends toward decreased death at 2 years (OR 0.49; 95% CI 0.19, 1.23) and ≥ 15% reduction in LVESV at 6 months (OR 3.81; 95% CI 0.24, 61.24) with concordant LV lead placement. CONCLUSION A concordant LV lead was associated with better CRT outcomes. Further study of feasible methods to achieve LV lead concordance is needed.
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Affiliation(s)
- Nancy M. Allen LaPointe
- Department of Medicine, Duke University School of Medicine, Durham, North Carolina, USA
- Duke-Margolis Center for Health Policy, Duke University, Durham, North Carolina, USA
| | - Fatima Ali-Ahmed
- Department of Cardiology, Mayo Clinic, Rochester, Minnesota, USA
| | - Frederik Dalgaard
- Department of Cardiology, Herlev and Gentofte Hospital, Hellerup, Denmark
| | - Andrzej S. Kosinski
- Department of Biostatistics and Bioinformatics, Duke University School of Medicine, Durham, North Carolina, USA
- Duke Clinical Research Institute, Durham, North Carolina, USA
| | - Gillian Sanders Schmidler
- Duke-Margolis Center for Health Policy, Duke University, Durham, North Carolina, USA
- Duke Clinical Research Institute, Durham, North Carolina, USA
- Department of Population Health Sciences, Duke University School of Medicine, Durham, North Carolina, USA
| | - Sana M. Al-Khatib
- Department of Medicine, Duke University School of Medicine, Durham, North Carolina, USA
- Duke Clinical Research Institute, Durham, North Carolina, USA
- Division of Cardiology, Duke University Medical Center, Durham, North Carolina, USA
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11
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Mehta VS, Ayis S, Elliott MK, Widjesuriya N, Kardaman N, Gould J, Behar JM, Chiribiri A, Razavi R, Niederer S, Rinaldi CA. The role of guidance in delivering cardiac resynchronization therapy: A systematic review and network meta-analysis. Heart Rhythm O2 2022; 3:482-492. [PMID: 36340494 PMCID: PMC9626880 DOI: 10.1016/j.hroo.2022.07.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 07/12/2022] [Accepted: 07/15/2022] [Indexed: 11/28/2022] Open
Abstract
Background Positioning the left ventricular lead at the optimal myocardial segment has been proposed to improve cardiac resynchronization therapy (CRT) response. Objectives We performed a systematic review and network meta-analysis evaluating echocardiographic and clinical response delivered with different guidance modalities compared to conventional fluoroscopic positioning. Methods Randomized trials with ≥6 months follow-up comparing any combination of imaging, electrical, hemodynamic, or fluoroscopic guidance were included. Imaging modalities were split whether one modality was used: cardiac magnetic resonance (CMR), speckle-tracking echocardiography (STE), single-photon emission computed tomography, cardiac computed tomography (CT), or a combination of these, defined as “multimodality imaging.” Results Twelve studies were included (n = 1864). Pair-wise meta-analysis resulted in significant odds of reduction in left ventricular end-systolic volume (LVESV) >15% (odds ratio [OR] 1.50, 95% confidence interval [CI] 1.05–2.13, P = .025) and absolute reduction in LVESV (standardized mean difference [SMD] -0.25, 95% CI -0.43 to -0.08, P = .005) with guidance. CMR (OR 55.3, 95% CI 4.7–656.9, P = .002), electrical (OR 17.0, 95% CI 2.9–100, P = .002), multimodality imaging (OR 4.47, 95% CI 1.36–14.7, P = .014), and hemodynamic guidance (OR 1.29–28.0, P = .02) were significant in reducing LVESV >15%. Only STE demonstrated a significant reduction in absolute LVESV (SMD -0.38, 95% CI -0.68 to -0.09, P = .011]. CMR had the highest probability of improving clinical response (OR 17.9, 95% CI 5.14–62.5, P < .001). Conclusion Overall, guidance improves CRT outcomes. STE and multimodality imaging provided the most reliable evidence of efficacy. Wide CIs observed for results of CMR guidance suggest more powered studies are required before a clear ranking is possible.
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Affiliation(s)
- Vishal S. Mehta
- Cardiology Department, Guy’s and St Thomas’ NHS Foundation Trust, London, United Kingdom
- School of Biomedical Engineering and Imaging Sciences, King’s College London, London, United Kingdom
- Address reprint requests and correspondence: Dr Vishal S. Mehta, School of Biomedical Engineering and Imaging Sciences, St Thomas’ Hospital, London, SE1 7EH, UK.
| | - Salma Ayis
- School of Population Health and Environmental Sciences, King's College London, London, United Kingdom
| | - Mark K. Elliott
- Cardiology Department, Guy’s and St Thomas’ NHS Foundation Trust, London, United Kingdom
- School of Biomedical Engineering and Imaging Sciences, King’s College London, London, United Kingdom
| | - Nadeev Widjesuriya
- Cardiology Department, Guy’s and St Thomas’ NHS Foundation Trust, London, United Kingdom
- School of Biomedical Engineering and Imaging Sciences, King’s College London, London, United Kingdom
| | - Nuha Kardaman
- Cardiology Department, Guy’s and St Thomas’ NHS Foundation Trust, London, United Kingdom
- School of Biomedical Engineering and Imaging Sciences, King’s College London, London, United Kingdom
| | - Justin Gould
- Cardiology Department, Guy’s and St Thomas’ NHS Foundation Trust, London, United Kingdom
- School of Biomedical Engineering and Imaging Sciences, King’s College London, London, United Kingdom
| | - Jonathan M. Behar
- Cardiology Department, Guy’s and St Thomas’ NHS Foundation Trust, London, United Kingdom
- School of Biomedical Engineering and Imaging Sciences, King’s College London, London, United Kingdom
| | - Amedeo Chiribiri
- Cardiology Department, Guy’s and St Thomas’ NHS Foundation Trust, London, United Kingdom
- School of Biomedical Engineering and Imaging Sciences, King’s College London, London, United Kingdom
| | - Reza Razavi
- Cardiology Department, Guy’s and St Thomas’ NHS Foundation Trust, London, United Kingdom
- School of Biomedical Engineering and Imaging Sciences, King’s College London, London, United Kingdom
| | - Steven Niederer
- School of Biomedical Engineering and Imaging Sciences, King’s College London, London, United Kingdom
| | - Christopher A. Rinaldi
- Cardiology Department, Guy’s and St Thomas’ NHS Foundation Trust, London, United Kingdom
- School of Biomedical Engineering and Imaging Sciences, King’s College London, London, United Kingdom
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12
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Vectorcardiography-derived index allows a robust quantification of ventricular electrical synchrony. Sci Rep 2022; 12:9961. [PMID: 35705598 PMCID: PMC9200867 DOI: 10.1038/s41598-022-14000-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Accepted: 02/03/2022] [Indexed: 11/25/2022] Open
Abstract
Alteration of muscle activation sequence is a key mechanism in heart failure with reduced ejection fraction. Successful cardiac resynchronization therapy (CRT), which has become standard therapy in these patients, is limited by the lack of precise dyssynchrony quantification. We implemented a computational pipeline that allows assessment of ventricular dyssynchrony by vectorcardiogram reconstruction from the patient’s electrocardiogram. We defined a ventricular dyssynchrony index as the distance between the voltage and speed time integrals of an individual observation and the linear fit of these variables obtained from a healthy population. The pipeline was tested in a 1914-patient population. The dyssynchrony index showed minimum values in heathy controls and maximum values in patients with left bundle branch block (LBBB) or with a pacemaker (PM). We established a critical dyssynchrony index value that discriminates electrical dyssynchronous patterns (LBBB and PM) from ventricular synchrony. In 10 patients with PM or CRT devices, dyssynchrony indexes above the critical value were associated with high time to peak strain standard deviation, an echocardiographic measure of mechanical dyssynchrony. Our index proves to be a promising tool to evaluate ventricular activation dyssynchrony, potentially enhancing the selection of candidates for CRT, device configuration during implantation, and post-implant optimization.
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13
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Prinzen FW, Auricchio A, Mullens W, Linde C, Huizar JF. Electrical management of heart failure: from pathophysiology to treatment. Eur Heart J 2022; 43:1917-1927. [PMID: 35265992 PMCID: PMC9123241 DOI: 10.1093/eurheartj/ehac088] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 12/02/2021] [Accepted: 02/22/2022] [Indexed: 11/14/2022] Open
Abstract
Electrical disturbances, such as atrial fibrillation (AF), dyssynchrony, tachycardia, and premature ventricular contractions (PVCs), are present in most patients with heart failure (HF). While these disturbances may be the consequence of HF, increasing evidence suggests that they may also cause or aggravate HF. Animal studies show that longer-lasting left bundle branch block, tachycardia, AF, and PVCs lead to functional derangements at the organ, cellular, and molecular level. Conversely, electrical treatment may reverse or mitigate HF. Clinical studies have shown the superiority of atrial and pulmonary vein ablation for rhythm control and AV nodal ablation for rate control in AF patients when compared with medical treatment. Ablation of PVCs can also improve left ventricular function. Cardiac resynchronization therapy (CRT) is an established adjunct therapy currently undergoing several interesting innovations. The current guideline recommendations reflect the safety and efficacy of these ablation therapies and CRT, but currently, these therapies are heavily underutilized. This review focuses on the electrical treatment of HF with reduced ejection fraction (HFrEF). We believe that the team of specialists treating an HF patient should incorporate an electrophysiologist in order to achieve a more widespread use of electrical therapies in the management of HFrEF and should also include individual conditions of the patient, such as body size and gender in therapy fine-tuning.
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Affiliation(s)
- Frits W Prinzen
- Department of Physiology, Cardiovascular Research Institute Maastricht, Maastricht University, PO Box 616, 6200 MD Maastricht, The Netherlands
| | - Angelo Auricchio
- Division of Cardiology, Istituto Cardiocentro Ticino, Lugano, Switzerland
| | - Wilfried Mullens
- Ziekenhuis Oost Limburg, Genk, Belgium
- Biomedical Research Institute, Faculty of Medicine and Life Sciences, University Hasselt, Hasselt, Belgium
| | - Cecilia Linde
- Department of Medicine, Karolinska Institutet, Solna, Sweden
- Department of Cardiology, Karolinska University Hospital, Stockholm, Sweden
| | - Jose F Huizar
- Cardiology Division, Virginia Commonwealth University/Pauley Heart Center, Richmond, VA, USA
- Cardiology Division, Hunter Holmes McGuire Veterans Affairs Medical Center, Richmond, VA, USA
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14
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Allen LaPointe NM, Ali-Ahmed F, Dalgaard F, Kosinski AS, Schmidler GS, Al-Khatib SM. Outcomes of Cardiac Resynchronization Therapy with Image-Guided Left Ventricular Lead Placement at the Site of Latest Mechanical Activation: A Systematic Review and Meta-Analysis. J Interv Cardiol 2022; 2022:6285894. [PMID: 35655661 PMCID: PMC9146808 DOI: 10.1155/2022/6285894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Accepted: 04/22/2022] [Indexed: 12/07/2022] Open
Abstract
Aim To assess evidence for an image-guided approach for cardiac resynchronization therapy (CRT) that targets left ventricular (LV) lead placement at the segment of latest mechanical activation. Methods A systematic review of EMBASE and PubMed was performed for randomized controlled trials (RCTs) and prospective observational studies from October 2008 through October 2020 that compared an image-guided CRT approach with a non-image-guided approach for LV lead placement. Meta-analyses were performed to assess the association between the image-guided approach and NYHA class improvement or changes in end-systolic volume (LVESV), end-diastolic volume (LVEDV), and ejection fraction (LVEF). Results From 5897 citations, 5 RCTs including 818 patients (426 image-guided and 392 non-image-guided) were identified. The mean age ranged from 66 to 71 years, 76% were male, and 53% had ischemic cardiomyopathy. Speckle tracking echocardiography was the primary image-guided method in all studies. LV lead placement within the segment of the latest mechanical activation (concordant) was achieved in the image-guided arm in 45% of the evaluable patients. There was a statistically significant improvement in the NYHA class at 6 months (odds ratio 1.66; 95% confidence interval (CI) [1.02, 2.69]) with the image-guided approach, but no statistically significant change in LVESV (MD -7.1%; 95% CI [-16.0, 1.8]), LVEDV (MD -5.2%; 95% CI [-15.8, 5.4]), or LVEF (MD 0.68; 95% CI [-4.36, 5.73]) versus the non-image-guided approach. Conclusion The image-guided CRT approach was associated with improvement in the NYHA class but not echocardiographic measures, possibly due to the small sample size and a low rate of concordant LV lead placement despite using the image-guided approach. Therefore, our meta-analysis was not able to identify consistent improvement in CRT outcomes with an image-guided approach.
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Affiliation(s)
- Nancy M. Allen LaPointe
- Department of Medicine, Duke University School of Medicine, Durham, NC 27710, USA
- Duke-Margolis Center for Health Policy, Duke University, Durham, NC 27708, USA
| | | | - Frederik Dalgaard
- Department of Cardiology, Herlev and Gentofte Hospital, Hellerup, Denmark
| | - Andrzej S. Kosinski
- Department of Biostatistics and Bioinformatics, Duke University School of Medicine, Durham, NC 27710, USA
- Duke Clinical Research Institute, Durham, NC 27710, USA
| | - Gillian Sanders Schmidler
- Duke-Margolis Center for Health Policy, Duke University, Durham, NC 27708, USA
- Department of Population Health Sciences, Duke University School of Medicine, Durham, NC 27710, USA
| | - Sana M. Al-Khatib
- Department of Medicine, Duke University School of Medicine, Durham, NC 27710, USA
- Duke Clinical Research Institute, Durham, NC 27710, USA
- Division of Cardiology, Duke University Medical Center, Durham, NC 27710, USA
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15
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Johansen JB, Nielsen JC, Kristensen J, Sandgaard NC. Troubleshooting the difficult left ventricular lead placement in cardiac resynchronization therapy: current status and future perspectives. Expert Rev Med Devices 2022; 19:341-352. [PMID: 35536115 DOI: 10.1080/17434440.2022.2075728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
INTRODUCTION Cardiac resynchronization therapy (CRT) is an important option in modern cardiac implantable electronic device (CIED) treatment. Techniques for left ventricular (LV) lead placement in the coronary sinus and its tributaries are neither well described nor studied systematically, despite attention regarding where to place the LV lead. AREAS COVERED This review presents specialized tools and techniques to overcome some of the most common problems encountered in LV lead placement in CRT. These tools and techniques are termed Interventional-CRT (I-CRT), as they share technology with other interventional procedures. The main principle in I-CRT, compared to the traditional Over-The-Wire technique, is to add better support for delivery of the LV lead through dedicated inner catheters that also allows more flexibility with use of more guidewires and better imaging with direct venography in the target vein. EXPERT OPINION Even though CRT is an established therapeutic option, there are still many challenges in the implementation of the therapy. The cornerstone should be an ease of delivering the CRT and specifically implantation of the LV lead. Therefore, knowledge of the principles in I-CRT, as I-CRT could make implantation simpler in general and easier to reach the optimal LV pacing site.
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Affiliation(s)
| | - Jens Cosedis Nielsen
- Department of Cardiology, Aarhus University Hospital and Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Jens Kristensen
- Department of Cardiology, Aarhus University Hospital and Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
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16
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Borgquist R, Barrington WR, Bakos Z, Werther-Evaldsson A, Saba S. Targeting the latest site of left ventricular mechanical activation is associated with improved long-term outcomes for recipients of Cardiac Resynchronization Therapy. Heart Rhythm O2 2022; 3:377-384. [PMID: 36097466 PMCID: PMC9463689 DOI: 10.1016/j.hroo.2022.05.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Background Previous studies have suggested that targeting the site of latest mechanical activation of the left ventricle (LV) results in improved cardiac resynchronization therapy (CRT) outcomes. It is not known whether these benefits are sustained over medium-term follow-up. Objective To assess the clinical outcome of imaging-guided LV lead position. Methods We sought to assess the medium-term clinical outcome by performing a patient-level meta-analysis of 2 previously published randomized controlled trials (the “STARTER” trial and the “CRT Clinic” trial). These 2 trials compared imaging-guided LV lead placement in the latest activated scar-free segment (intervention group) to standard of care (control). Mortality and heart failure hospitalization outcomes over extended follow-up were gathered from the medical records and merged. Results were stratified for native electrocardiogram (ECG) morphology. Results A total of 289 patients were followed for a median of 6.3 years. Seven years post implant, 47 (28%) in the intervention group had died, vs 47 (38%) in the control group (P = .13); 49 (30%) vs 53 (42%) had been hospitalized for heart failure (P = .035); and 47% vs 59% (P = .057) had reached the combined endpoint. In Kaplan-Meier analysis, patients in the intervention group had better survival free of heart failure hospitalization (P = .045) and lower risk of heart failure hospitalization (P = .019). Conclusion Targeting the latest mechanically activated segment in CRT results in better medium-term clinical outcome, mainly driven by a reduced risk of hospitalization for heart failure. The effect was seen regardless of native ECG morphology.
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Affiliation(s)
- Rasmus Borgquist
- Arrhythmia Section, Department of Cardiology, Lund University, Skane University Hospital, Lund, Sweden
- Address reprint requests and correspondence: Dr Rasmus Borgquist, Arrhythmia Section, Skane University Hospital, 221 85, Lund, Sweden.
| | - William R. Barrington
- Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Zoltan Bakos
- Department of Cardiology, Kristianstad Hospital, Kristianstad, Sweden
| | - Anna Werther-Evaldsson
- Heart Failure and Transplant Section, Department of Cardiology, Lund University, Skane University Hospital, Lund, Sweden
| | - Samir Saba
- Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
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17
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2021 ESC Guidelines on cardiac pacing and cardiac resynchronization therapy. Translation of the document prepared by the Czech Society of Cardiology. COR ET VASA 2022. [DOI: 10.33678/cor.2022.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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18
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Cardiac computed tomography-verified right ventricular lead position and outcomes in cardiac resynchronization therapy. J Interv Card Electrophysiol 2022; 64:783-792. [DOI: 10.1007/s10840-022-01193-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Accepted: 03/20/2022] [Indexed: 10/18/2022]
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Glikson M, Nielsen JC, Kronborg MB, Michowitz Y, Auricchio A, Barbash IM, Barrabés JA, Boriani G, Braunschweig F, Brignole M, Burri H, Coats AJ, Deharo JC, Delgado V, Diller GP, Israel CW, Keren A, Knops RE, Kotecha D, Leclercq C, Merkely B, Starck C, Thylén I, Tolosana JM. Grupo de trabajo sobre estimulación cardiaca y terapia de resincronización cardiaca de la Sociedad Europea de Cardiología (ESC). Rev Esp Cardiol 2022. [DOI: 10.1016/j.recesp.2021.10.025] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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20
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Glikson M, Nielsen JC, Kronborg MB, Michowitz Y, Auricchio A, Barbash IM, Barrabés JA, Boriani G, Braunschweig F, Brignole M, Burri H, Coats AJS, Deharo JC, Delgado V, Diller GP, Israel CW, Keren A, Knops RE, Kotecha D, Leclercq C, Merkely B, Starck C, Thylén I, Tolosana JM, Leyva F, Linde C, Abdelhamid M, Aboyans V, Arbelo E, Asteggiano R, Barón-Esquivias G, Bauersachs J, Biffi M, Birgersdotter-Green U, Bongiorni MG, Borger MA, Čelutkienė J, Cikes M, Daubert JC, Drossart I, Ellenbogen K, Elliott PM, Fabritz L, Falk V, Fauchier L, Fernández-Avilés F, Foldager D, Gadler F, De Vinuesa PGG, Gorenek B, Guerra JM, Hermann Haugaa K, Hendriks J, Kahan T, Katus HA, Konradi A, Koskinas KC, Law H, Lewis BS, Linker NJ, Løchen ML, Lumens J, Mascherbauer J, Mullens W, Nagy KV, Prescott E, Raatikainen P, Rakisheva A, Reichlin T, Ricci RP, Shlyakhto E, Sitges M, Sousa-Uva M, Sutton R, Suwalski P, Svendsen JH, Touyz RM, Van Gelder IC, Vernooy K, Waltenberger J, Whinnett Z, Witte KK. 2021 ESC Guidelines on cardiac pacing and cardiac resynchronization therapy. Europace 2022; 24:71-164. [PMID: 34455427 DOI: 10.1093/europace/euab232] [Citation(s) in RCA: 140] [Impact Index Per Article: 70.0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
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21
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Glikson M, Beinart R, Golovchiner G, Sheshet AB, Swissa M, Bolous M, Rosso R, Medina A, Haim M, Friedman P, Khalamaizer V, Benzvi S, Ito S, Goldenberg I, Klempfner R, Vaturi O, Oh JK. Radial strain imaging-guided lead placement for improving response to cardiac resynchronization therapy in patients with ischaemic cardiomyopathy: the raise cardiac resynchronization therapy trial. Europace 2021; 24:835-844. [PMID: 34734227 DOI: 10.1093/europace/euab253] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2021] [Indexed: 11/12/2022] Open
Abstract
AIMS To evaluate the benefit of speckle tracking radial strain imaging (STRSI)-guided left ventricular (LV) lead (LVL) positioning in cardiac resynchronization therapy (CRT) in patients (pts) with ischaemic cardiomyopathy with CRT indication. METHODS AND RESULTS We conducted a prospective randomized controlled trial. Patients were enrolled in nine centres with 2:1 randomization into two groups (guided vs. control). Patients underwent STRSI to identify the optimal LV position from six LV segments at midventricular level. Implantation via STRSI was attempted for recommended segment in the guided group only. Follow-up included echocardiography (6 months) and clinical evaluation (6 and 12 months). The primary endpoint was comparison % reduction in LV end-systolic volume at 6 months with baseline. Secondary endpoints included hospitalizations for heart failure and death, and improvement in additional echocardiographic measurements and quality of life score. A total of 172 patients (115 guided vs. 57 control) were enrolled. In the guided group, 60% of the implanted LV leads were adjudicated to be successfully located at the recommended segment, whereas in the control group 44% reached the best STRSI determined segment. There was no difference between the groups in any of the primary or secondary endpoints at 6 and 12 months. CONCLUSION Our findings suggest that echo-guided implantation of an LV lead using STRSI does not improve the clinical or echocardiographic response compared with conventional implantation.
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Affiliation(s)
- Michael Glikson
- Integrated Heart Centre, Shaare Zedek Medical Centre, Hebrew University, Jerusalem, Israel.,Arrhythmia center, Sheba Medical Centre, Tel Aviv University, Tel Hashomer, Israel
| | - Roy Beinart
- Arrhythmia center, Sheba Medical Centre, Tel Aviv University, Tel Hashomer, Israel
| | - Gregory Golovchiner
- Department of cardiology, Rabin MC, Tel Aviv University, Petah Tikva, Israel
| | - Alon Bar Sheshet
- Department of cardiology, Rabin MC, Tel Aviv University, Petah Tikva, Israel
| | - Moshe Swissa
- Department of cardiology, Kaplan MC, Hebrew University, Rehovot, Israel
| | - Munther Bolous
- Department of cardiology, Rambam MC, Technion Institute, Haifa, Israel
| | - Raphael Rosso
- Department of cardiology, Tel Aviv Souraski MC, Tel Aviv University, Tel Aviv, Israel
| | - Aharon Medina
- Integrated Heart Centre, Shaare Zedek Medical Centre, Hebrew University, Jerusalem, Israel
| | - Moti Haim
- Department of cardiology, Soroka MC, Ben Gurion University, Beer Sheba, Israel
| | - Paul Friedman
- Department of cardiovascular medicine, Mayo Clinic, Rochester, MN, USA
| | | | - Shlomit Benzvi
- Israeli Centre for Cardiovascular Research, Tel Hashomer, Israel
| | - Saki Ito
- Department of cardiovascular medicine, Mayo Clinic, Rochester, MN, USA
| | - Ilan Goldenberg
- Israeli Centre for Cardiovascular Research, Tel Hashomer, Israel.,University of Rochester, Rochester, NY, USA
| | - Robert Klempfner
- Israeli Centre for Cardiovascular Research, Tel Hashomer, Israel
| | - Ori Vaturi
- Arrhythmia center, Sheba Medical Centre, Tel Aviv University, Tel Hashomer, Israel
| | - Jae K Oh
- Department of cardiovascular medicine, Mayo Clinic, Rochester, MN, USA
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22
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Wouters PC, van Lieshout C, van Dijk VF, Delnoy PPH, Doevendans PA, Cramer MJ, Frederix GW, van Slochteren FJ, Meine M. Advanced image-supported lead placement in cardiac resynchronisation therapy: protocol for the multicentre, randomised controlled ADVISE trial and early economic evaluation. BMJ Open 2021; 11:e054115. [PMID: 34697125 PMCID: PMC8547507 DOI: 10.1136/bmjopen-2021-054115] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
INTRODUCTION Achieving optimal placement of the left ventricular (LV) lead in cardiac resynchronisation therapy (CRT) is a prerequisite in order to achieve maximum clinical benefit, and is likely to help avoid non-response. Pacing outside scar tissue and targeting late activated segments may improve outcome. The present study will be the first randomised controlled trial to compare the efficacy of real-time image-guided LV lead delivery to conventional CRT implantation. In addition, to estimate the cost-effectiveness of targeted lead implantation, an early decision analytic model was developed, and described here. METHODS AND ANALYSIS A multicentre, interventional, randomised, controlled trial will be conducted in a total of 130 patients with a class I or IIa indication for CRT implantation. Patients will be stratified to ischaemic heart failure aetiology and 1:1 randomised to either empirical lead placement or live image-guided lead placement. Ultimate lead location and echocardiographic assessment will be performed by core laboratories, blinded to treatment allocation and patient information. Late gadolinium enhancement cardiac magnetic resonance imaging (CMR) and CINE-CMR with feature-tracking postprocessing software will be used to semi-automatically determine myocardial scar and late mechanical activation. The subsequent treatment file with optimal LV-lead positions will be fused with the fluoroscopy, resulting in live target-visualisation during the procedure. The primary endpoint is the difference in percentage of successfully targeted LV-lead location. Secondary endpoints are relative percentage reduction in indexed LV end-systolic volume, a hierarchical clinical endpoint, and quality of life. The early analytic model was developed using a Markov-model, consisting of seven mutually exclusive health states. ETHICS AND DISSEMINATION The protocol was approved by the Medical Research Ethics Committee Utrecht (NL73416.041.20). All participants are required to provide written informed consent. Results will be submitted to peer-reviewed journals. TRIAL REGISTRATION NUMBER NCT05053568; Trial NL8666.
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Affiliation(s)
- Philippe C Wouters
- Department of Cardiology, Universitair Medisch Centrum Utrecht, Utrecht, The Netherlands
| | - Chris van Lieshout
- Department of Public Health, Healthcare Innovation & Evaluation and Medical Humanities (PHM), Universitair Medisch Centrum Utrecht, Utrecht, The Netherlands
| | - Vincent F van Dijk
- Department of Cardiology, Sint Antonius Ziekenhuis, Nieuwegein, The Netherlands
| | | | - Pieter Afm Doevendans
- Department of Cardiology, Universitair Medisch Centrum Utrecht, Utrecht, The Netherlands
| | - Maarten J Cramer
- Department of Cardiology, Universitair Medisch Centrum Utrecht, Utrecht, The Netherlands
| | - Geert Wj Frederix
- Department of Public Health, Healthcare Innovation & Evaluation and Medical Humanities (PHM), Universitair Medisch Centrum Utrecht, Utrecht, The Netherlands
| | | | - Mathias Meine
- Department of Cardiology, Universitair Medisch Centrum Utrecht, Utrecht, The Netherlands
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23
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Glikson M, Nielsen JC, Kronborg MB, Michowitz Y, Auricchio A, Barbash IM, Barrabés JA, Boriani G, Braunschweig F, Brignole M, Burri H, Coats AJS, Deharo JC, Delgado V, Diller GP, Israel CW, Keren A, Knops RE, Kotecha D, Leclercq C, Merkely B, Starck C, Thylén I, Tolosana JM. 2021 ESC Guidelines on cardiac pacing and cardiac resynchronization therapy. Eur Heart J 2021; 42:3427-3520. [PMID: 34455430 DOI: 10.1093/eurheartj/ehab364] [Citation(s) in RCA: 865] [Impact Index Per Article: 288.3] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
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24
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Butter C, Georgi C, Stockburger M. Optimal CRT Implantation-Where and How To Place the Left-Ventricular Lead? Curr Heart Fail Rep 2021; 18:329-344. [PMID: 34495452 PMCID: PMC8484220 DOI: 10.1007/s11897-021-00528-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/21/2021] [Indexed: 12/28/2022]
Abstract
Purpose of Review Cardiac resynchronization therapy (CRT) represents a well-established and effective non-pharmaceutical heart failure (HF) treatment in selected patients. Still, a significant number of patients remain CRT non-responders. An optimal placement of the left ventricular (LV) lead appears crucial for the intended hemodynamic and hence clinical improvement. A well-localized target area and tools that help to achieve successful lead implantation seem to be of utmost importance to reach an optimal CRT effect. Recent Findings Recent studies suggest previous multimodal imaging (CT/cMRI/ECG torso) to guide intraprocedural LV lead placement. Relevant benefit compared to empirical lead optimization is still a matter of debate. Technical improvements in leads and algorithms (e.g., multipoint pacing (MPP), adaptive algorithms) promise higher procedural success. Recently emerging alternatives for ventricular synchronization such as conduction system pacing (CSP), LV endocardial pacing, or leadless pacing challenge classical biventricular pacing. Summary This article reviews current strategies for a successful planning, implementation, and validation of the optimal CRT implantation. Pre-implant imaging modalities offer promising assistance for complex cases; empirical lead positioning and intraoperative testing remain the cornerstone in most cases and ensure a successful CRT effect.
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Affiliation(s)
- Christian Butter
- Department of Cardiology, Heart Center Brandenburg, University Hospital Brandenburg, Brandenburg Medical School Theodor Fontane, Brandenburg, Germany
- Faculty of Health Sciences Brandenburg, Brandenburg Medical School Theodor Fontane, Brandenburg, Germany
| | - Christian Georgi
- Department of Cardiology, Heart Center Brandenburg, University Hospital Brandenburg, Brandenburg Medical School Theodor Fontane, Brandenburg, Germany
- Faculty of Health Sciences Brandenburg, Brandenburg Medical School Theodor Fontane, Brandenburg, Germany
| | - Martin Stockburger
- Department of Internal Medicine/Cardiology, Havelland Kliniken GmbH, Nauen, Germany
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25
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Kheiri B, Przybylowicz R, Simpson TF, Merrill M, Osman M, Dalouk K, Rahmouni H, Stecker E, Nazer B, Henrikson CA. Imaging-guided cardiac resynchronization therapy: A meta-analysis of randomized controlled trials. PACING AND CLINICAL ELECTROPHYSIOLOGY: PACE 2021; 44:1570-1576. [PMID: 34255376 DOI: 10.1111/pace.14316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 06/07/2021] [Accepted: 07/11/2021] [Indexed: 11/28/2022]
Abstract
BACKGROUND Among patients with heart failure and left ventricular (LV) dysfunction despite guideline directed medical therapy, cardiac resynchronization (CRT) is an effective technology to reverse LV remodeling. Given that a large portion of patients are non-responders, alternatives to traditional LV-lead placement have been explored. A promising alternative is image targeted placement of an LV-lead to latest mechanically activated segment without scar. METHODS Electronic database search for randomized controlled trials (RCTs) that evaluated the imaging-guided LV-lead placement on clinical, echocardiographic, and functional outcomes. The primary outcome was a composite of mortality and heart failure hospitalization. The secondary outcomes included CRT responders, New York Heart Association (NYHA), 6-minute walk test, Minnesota Living with Heart Failure Questionnaire (MLHFQ), and ejection fraction (EF) changes. RESULTS Analysis included 4 RCTs of 691 patients with an average follow-up of 2 years (age 69.5 ± 10.3 years, 76% males, 54% ischemic cardiomyopathy, 81% with NYHA classes III/IV, and EF of 24.4% ± 8). The most common site for LV-lead paced segment was the anterolateral segment (45%) and at mid-LV (49%). Compared with the control, imaging-guided LV-lead placement was associated with a significant reduction of the primary outcome (hazard ratio [HR] = 0.60; 95% CI = 0.40-0.88; p = .01), higher CRT responders (odd ratio [OR] = 2.10; p < .01), more NYHA improvements by ≥1 (OR = 1.89; p = .01), increased 6MWT (mean difference [MD] = 25.78 feet; p < .01), and lower MLHFQ (MD = -4.04; p = .04), without significant differences in the LVEF (p = .08). CONCLUSIONS In patients undergoing CRT, imaging-guided LV-lead placement was associated with improved clinical, echocardiographic, and functional status.
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Affiliation(s)
- Babikir Kheiri
- Knight Cardiovascular Institute, Oregon Health and Science University, Portland, Oregon, USA
| | - Ryle Przybylowicz
- Knight Cardiovascular Institute, Oregon Health and Science University, Portland, Oregon, USA
| | - Timothy F Simpson
- Knight Cardiovascular Institute, Oregon Health and Science University, Portland, Oregon, USA
| | - Miranda Merrill
- Knight Cardiovascular Institute, Oregon Health and Science University, Portland, Oregon, USA
| | - Mohammed Osman
- Knight Cardiovascular Institute, Oregon Health and Science University, Portland, Oregon, USA.,Division of Cardiology, West Virginia University School of Medicine, Morgantown, West Virginia, USA
| | - Khidir Dalouk
- Knight Cardiovascular Institute, Oregon Health and Science University, Portland, Oregon, USA
| | - Hind Rahmouni
- Knight Cardiovascular Institute, Oregon Health and Science University, Portland, Oregon, USA
| | - Eric Stecker
- Knight Cardiovascular Institute, Oregon Health and Science University, Portland, Oregon, USA
| | - Babak Nazer
- Knight Cardiovascular Institute, Oregon Health and Science University, Portland, Oregon, USA
| | - Charles A Henrikson
- Knight Cardiovascular Institute, Oregon Health and Science University, Portland, Oregon, USA
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26
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Sohal M, Hamid S, Perego G, Della Bella P, Adhya S, Paisey J, Betts T, Kamdar R, Lambiase P, Leyva F, McComb JM, Behar J, Jackson T, Claridge S, Mehta V, Elliott M, Niederer S, Razavi R, Rinaldi CA. A multicenter prospective randomized controlled trial of cardiac resynchronization therapy guided by invasive dP/dt. Heart Rhythm O2 2021; 2:19-27. [PMID: 34113901 PMCID: PMC8183864 DOI: 10.1016/j.hroo.2021.01.005] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Background No periprocedural metric has demonstrated improved cardiac resynchronization therapy (CRT) outcomes in a multicenter setting. Objective We sought to determine if left ventricular (LV) lead placement targeted to the coronary sinus (CS) branch generating the best acute hemodynamic response (AHR) results in improved outcomes at 6 months. Methods In this multicenter randomized controlled trial, patients were randomized to guided CRT or conventional CRT. Patients in the guided arm had LV dP/dtmax measured during biventricular (BIV) pacing. Target CS branches were identified and the final LV lead position was the branch with the best AHR and acceptable threshold values. The primary endpoint was the proportion of patients with a reduction in LV end-systolic volume (LVESV) of ≥15% at 6 months. Results A total of 281 patients were recruited across 12 centers. Mean age was 70.8 ± 10.9 years and 54% had ischemic etiology. Seventy-three percent of patients in the guided arm demonstrated a reduction in LVESV of ≥15% at 6 months vs 60% in the conventional arm (P = .02). Patients with AHR ≥ 10% were more likely to demonstrate a reduction of ESV ≥ 15% (84% of patients with an AHR ≥10% vs 28% with an AHR <10%; P < 0.001). Procedure duration and fluoroscopy times were longer in the pressure wire-guided arm (104 ± 39 minutes vs 142 ± 39 minutes; P < .001 and 20 ±16 minutes vs 28 ± 15 minutes; P = .002). Conclusions AHR determined by invasively measuring LV dP/dtmax during BIV pacing predicts reverse remodeling 6 months after CRT. Patients in whom LV dP/dtmax was used to guide LV lead placement demonstrated better rates of reverse remodeling.
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Affiliation(s)
- Manav Sohal
- Guy's and St. Thomas' NHS Foundation Trust, London, United Kingdom.,King's College London, London, United Kingdom
| | - Shoaib Hamid
- Queen Elizabeth Hospital, London, United Kingdom
| | | | | | - Shaumik Adhya
- Guy's and St. Thomas' NHS Foundation Trust, London, United Kingdom.,Medway Maritime Hospital, Gillingham, United Kingdom
| | - John Paisey
- Royal Bournemouth Hospital, Bournemouth, United Kingdom
| | - Tim Betts
- John Radcliffe Hospital, Oxford, United Kingdom
| | - Ravi Kamdar
- Croydon University Hospital, London, United Kingdom
| | - Pier Lambiase
- The Heart Hospital, London, United Kingdom.,Barts Heart Centre, London, United Kingdom
| | | | | | | | | | | | | | | | | | - Reza Razavi
- King's College London, London, United Kingdom
| | - C Aldo Rinaldi
- Guy's and St. Thomas' NHS Foundation Trust, London, United Kingdom.,King's College London, London, United Kingdom
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27
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Odland HH, Holm T, Gammelsrud LO, Cornelussen R, Kongsgaard E. Determinants of LV dP/dt max and QRS duration with different fusion strategies in cardiac resynchronisation therapy. Open Heart 2021; 8:e001615. [PMID: 33963078 PMCID: PMC8108692 DOI: 10.1136/openhrt-2021-001615] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 03/13/2021] [Accepted: 04/16/2021] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND We designed this study to assess the acute effects of different fusion strategies and left ventricular (LV) pre-excitation/post-excitation on LV dP/dtmax and QRS duration (QRSd). METHODS We measured LV dP/dtmax and QRSd in 19 patients having cardiac resynchronisation therapy (CRT). Two groups of biventricular pacing were compared: pacing the left ventricle (LV) with FUSION with intrinsic right ventricle (RV) activation (FUSION), and pacing the LV and RV with NO FUSION with intrinsic RV activation. In the NO FUSION group, the RV was paced before the expected QRS onset. A quadripolar LV lead enabled distal, proximal and multipoint pacing (MPP). The LV was stimulated relative in time to either RV pace or QRS-onset in four pre-excitation/post-excitation classes (PCs). We analysed the interactions of two groups (FUSION/NO FUSION) with three different electrode configurations, each paced with four different degrees of LV pre-excitation (PC1-4) in a statistical model. RESULTS LV dP/dtmax was higher with NO FUSION than with FUSION (769±46 mm Hg/s vs 746±46 mm Hg/s, p<0.01), while there was no difference in QRSd (NO FUSION 156±2 ms and FUSION 155±2 ms). LV dP/dtmax and QRSd increased with LV pre-excitation compared with pacing timed to QRS/RV pace-onset regardless of electrode configuration. Overall, pacing LV close to QRS-onset (FUSION) with MPP shortened QRSd the most, while LV dP/dtmax increased the most with LV pre-excitation. CONCLUSION We show how a beneficial change in QRSd dissociates from the haemodynamic change in LV dP/dtmax with different biventricular pacing strategies. In this study, LV pre-excitation was the main determinant of LV dP/dtmax, while QRSd shortens with optimal resynchronisation.
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Affiliation(s)
- Hans Henrik Odland
- Department of Cardiology and Pediatric Cardiology, Oslo University Hospital, Oslo, Norway
| | - Torbjørn Holm
- Department of Cardiology, Oslo University Hospital, Oslo, Norway
| | | | | | - Erik Kongsgaard
- Department of Cardiology, Oslo University Hospital, Oslo, Norway
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28
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Cardiac Resynchronization Therapy in Non-Ischemic Cardiomyopathy: Role of Multimodality Imaging. Diagnostics (Basel) 2021; 11:diagnostics11040625. [PMID: 33808474 PMCID: PMC8066641 DOI: 10.3390/diagnostics11040625] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 03/26/2021] [Accepted: 03/28/2021] [Indexed: 12/28/2022] Open
Abstract
Non-ischemic cardiomyopathy encompasses a heterogeneous group of diseases, with a generally unfavorable long-term prognosis. Cardiac resynchronization therapy (CRT) is a useful therapeutic option for patients with symptomatic heart failure, currently recommended by all available guidelines, with outstanding benefits, especially in non-ischemic dilated cardiomyopathy. Still, in spite of clear indications based on identifying a dyssynchronous pattern on the electrocardiogram (ECG,) a great proportion of patients are non-responders. The idea that multimodality cardiac imaging can play a role in refining the selection criteria and the implant technique and help with subsequent system optimization is promising. In this regard, predictors of CRT response, such as apical rocking and septal flash have been identified. Promising new data come from studies using cardiac magnetic resonance and nuclear imaging for showcasing myocardial dyssynchrony. Still, to date, no single imaging predictor has been included in the guidelines, probably due to lack of validation in large, multicenter cohorts. This review provides an up-to-date synthesis of the latest evidence of CRT use in non-ischemic cardiomyopathy and highlights the potential additional value of multimodality imaging for improving CRT response in this population. By incorporating all these findings into our clinical practice, we can aim toward obtaining a higher proportion of responders and improve the success rate of CRT.
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29
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Bazoukis G, Thomopoulos C, Tse G, Tsioufis K, Nihoyannopoulos P. Global longitudinal strain predicts responders after cardiac resynchronization therapy-a systematic review and meta-analysis. Heart Fail Rev 2021; 27:827-836. [PMID: 33782788 DOI: 10.1007/s10741-021-10094-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/01/2021] [Indexed: 11/28/2022]
Abstract
To evaluate the association between baseline global longitudinal strain (GLS) and ΔGLS (difference of baseline GLS and follow-up) and cardiac resynchronization therapy (CRT) response defined either with clinical or with echocardiographic characteristics. This meta-analysis was performed in accordance to both the Meta-Analysis of Observational Studies in Epidemiology and Strengthening the Reporting of Observational Studies in Epidemiology guidelines. Two independent investigators performed a comprehensive systematic search in MedLine, EMBASE and Cochrane databases through September 2019 without limitations. Data analysis was performed by using the Review Manager software (RevMan), version 5.3, and Stata 13 software. A p value of less than 0.05 (two-tailed) was considered statistically significant. Twelve studies (1004 patients, mean age 63.8 years old, males 69.4%) provided data on the association of baseline GLS with the response to CRT therapy. We found that CRT responders had significantly better resting GLS values compared with non-responders [GLS mean difference -2.13 (-3.03, -1.23), p < 0.001, I2 78%]. Furthermore, CRT responders had significantly greater improvement of GLS at follow-up compared with non-responders [ΔGLS mean difference -3.20 (-4.95, -1.45), p < 0.001, I2 66%]. These associations remained significant in a subgroup analysis including only studies with similar CRT response definition. In this meta-analysis, we found that CRT responders had a baseline and ΔGLS significantly higher than the non-responders strengthening the central role of GLS as a tool for selecting candidates for CRT. Furthermore, improved GLS values after CRT may be used to better define CRT responders.
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Affiliation(s)
- George Bazoukis
- Second Department of Cardiology, General Hospital of Athens "Evangelismos", Athens, Greece
| | | | - Gary Tse
- Tianjin Key Laboratory of Ionic-Molecular Function of Cardiovascular Disease, Department of Cardiology, Tianjin Institute of Cardiology, Second Hospital of Tianjin Medical University, 300211, Tianjin, P. R. China
| | - Konstantinos Tsioufis
- First Cardiology Clinic, Hippokration Hospital, University of Athens, Athens, Greece
| | - Petros Nihoyannopoulos
- Imperial College London, NHLI, National Heart & Lung Institute, London, UK. .,Imperial College London, NHLI, Hammersmith Hospital, Du Cane Road, London, W12 0NN, UK.
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30
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Gould J, Sidhu BS, Sieniewicz BJ, Porter B, Lee AWC, Razeghi O, Behar JM, Mehta V, Elliott MK, Toth D, Haberland U, Razavi R, Rajani R, Niederer S, Rinaldi CA. Feasibility of intraprocedural integration of cardiac CT to guide left ventricular lead implantation for CRT upgrades. J Cardiovasc Electrophysiol 2021; 32:802-812. [PMID: 33484216 PMCID: PMC8647921 DOI: 10.1111/jce.14896] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Revised: 12/19/2020] [Accepted: 01/17/2021] [Indexed: 11/26/2022]
Abstract
BACKGROUND Optimal positioning of the left ventricular (LV) lead is an important determinant of cardiac resynchronization therapy (CRT) response. OBJECTIVE Evaluate the feasibility of intraprocedural integration of cardiac computed tomography (CT) to guide LV lead implantation for CRT upgrades. METHODS Patients undergoing LV lead upgrade underwent ECG-gated cardiac CT dyssynchrony and LV scar assessment. Target American Heart Association segment selection was determined using latest non-scarred mechanically activating segments overlaid onto real-time fluoroscopy with image co-registration to guide optimal LV lead implantation. Hemodynamic validation was performed using a pressure wire in the LV cavity (dP/dtmax) ). RESULTS 18 patients (male 94%, 55.6% ischemic cardiomyopathy) with RV pacing burden 60.0 ± 43.7% and mean QRS duration 154 ± 30 ms underwent cardiac CT. 10/10 ischemic patients had CT evidence of scar and these segments were excluded as targets. Seventeen out of 18 (94%) patients underwent successful LV lead implantation with delivery to the CT target segment in 15 out of 18 (83%) of patients. Acute hemodynamic response (dP/dtmax ≥ 10%) was superior with LV stimulation in CT target versus nontarget segments (83.3% vs. 25.0%; p = .012). Reverse remodeling at 6 months (LV end-systolic volume improvement ≥15%) occurred in 60% of subjects (4/8 [50.0%] ischemic cardiomyopathy vs. 5/7 [71.4%] nonischemic cardiomyopathy, p = .608). CONCLUSION Intraprocedural integration of cardiac CT to guide optimal LV lead placement is feasible with superior hemodynamics when pacing in CT target segments and favorable volumetric response rates, despite a high proportion of patients with ischemic cardiomyopathy. Multicentre, randomized controlled studies are needed to evaluate whether intraprocedural integration of cardiac CT is superior to standard care.
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Affiliation(s)
- Justin Gould
- Department of CardiologyGuy's and St Thomas' NHS Foundation TrustLondonUK
- School of Biomedical Engineering and Imaging SciencesKing's CollegeLondonUK
| | - Baldeep S. Sidhu
- Department of CardiologyGuy's and St Thomas' NHS Foundation TrustLondonUK
- School of Biomedical Engineering and Imaging SciencesKing's CollegeLondonUK
| | - Benjamin J. Sieniewicz
- Department of CardiologyGuy's and St Thomas' NHS Foundation TrustLondonUK
- School of Biomedical Engineering and Imaging SciencesKing's CollegeLondonUK
| | - Bradley Porter
- Department of CardiologyGuy's and St Thomas' NHS Foundation TrustLondonUK
- School of Biomedical Engineering and Imaging SciencesKing's CollegeLondonUK
| | - Angela W. C. Lee
- School of Biomedical Engineering and Imaging SciencesKing's CollegeLondonUK
| | - Orod Razeghi
- School of Biomedical Engineering and Imaging SciencesKing's CollegeLondonUK
| | - Jonathan M. Behar
- Department of CardiologyGuy's and St Thomas' NHS Foundation TrustLondonUK
- School of Biomedical Engineering and Imaging SciencesKing's CollegeLondonUK
| | - Vishal Mehta
- Department of CardiologyGuy's and St Thomas' NHS Foundation TrustLondonUK
- School of Biomedical Engineering and Imaging SciencesKing's CollegeLondonUK
| | - Mark K. Elliott
- Department of CardiologyGuy's and St Thomas' NHS Foundation TrustLondonUK
- School of Biomedical Engineering and Imaging SciencesKing's CollegeLondonUK
| | - Daniel Toth
- School of Biomedical Engineering and Imaging SciencesKing's CollegeLondonUK
| | - Ulrike Haberland
- Medical Imaging TechnologiesSiemens HealthineersMalvernPennsylvaniaUSA
| | - Reza Razavi
- Department of CardiologyGuy's and St Thomas' NHS Foundation TrustLondonUK
- School of Biomedical Engineering and Imaging SciencesKing's CollegeLondonUK
| | - Ronak Rajani
- Department of CardiologyGuy's and St Thomas' NHS Foundation TrustLondonUK
- School of Biomedical Engineering and Imaging SciencesKing's CollegeLondonUK
| | - Steven Niederer
- School of Biomedical Engineering and Imaging SciencesKing's CollegeLondonUK
| | - Christopher A. Rinaldi
- Department of CardiologyGuy's and St Thomas' NHS Foundation TrustLondonUK
- School of Biomedical Engineering and Imaging SciencesKing's CollegeLondonUK
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31
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Wouters PC, Vernooy K, Cramer MJ, Prinzen FW, Meine M. Optimizing lead placement for pacing in dyssynchronous heart failure: The patient in the lead. Heart Rhythm 2021; 18:1024-1032. [PMID: 33601035 DOI: 10.1016/j.hrthm.2021.02.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Revised: 02/09/2021] [Accepted: 02/10/2021] [Indexed: 10/22/2022]
Abstract
Cardiac resynchronization therapy (CRT) greatly reduces morbidity and mortality in patients with dyssynchronous heart failure. However, despite tremendous efforts, response has been variable and can be further improved. Although optimizing left ventricular lead placement (LVLP) is arguably the cornerstone of CRT, the procedure of LVLP using the transvenous approach has remained largely unchanged for more than 2 decades. Improvements have been developed using scar location and electrical and/or mechanical mapping, and interest in conduction system pacing as an alternative to biventricular pacing has emerged recently. Conduction system pacing is promising but may not be suitable for all patients with dyssynchronous heart failure. This review underscores the importance of a patient-tailored approach and discusses the potential applications of both conduction system pacing and targeted biventricular CRT.
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Affiliation(s)
- Philippe C Wouters
- Department of Cardiology, University Medical Center Utrecht, Utrecht, The Netherlands.
| | - Kevin Vernooy
- Department of Cardiology, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University Medical Centre+ (MUMC+), Maastricht, The Netherlands; Department of Cardiology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Maarten J Cramer
- Department of Cardiology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Frits W Prinzen
- Department of Physiology, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, The Netherlands
| | - Mathias Meine
- Department of Cardiology, University Medical Center Utrecht, Utrecht, The Netherlands
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32
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Kronborg MB, Stephansen C, Kristensen J, Gerdes C, Nielsen JC. Reproducibility and repeatability of identifying the latest electrical activation during mapping of coronary sinus branches in CRT recipients. J Cardiovasc Electrophysiol 2020; 31:2940-2947. [PMID: 32852869 DOI: 10.1111/jce.14729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 08/11/2020] [Accepted: 08/19/2020] [Indexed: 11/28/2022]
Abstract
INTRODUCTION Studies have shown an association between the outcome in cardiac resynchronization therapy (CRT) and longer interventricular delay at the site of the left ventricular (LV) lead. Targeted LV lead placement at the latest electrically activated segment increases LV function further as compared with standard treatment. We aimed to determine reproducibility and repeatability of identifying the latest electrically activated segment during mapping of all available coronary sinus (CS) branches in patients receiving CRT. METHODS We included 35 patients who underwent CRT implantation with protocolled mapping guided LV lead implantation aiming for the site of the latest electrical activation. Three different doctors experienced in electrophysiology and implantation of CRT devices independently measured time interval from the local bipolar right ventricular (RV) electrogram (EGM) to the local unipolar LV EGM at all mapped sites (RV-LV). The segment with the latest electrical activation was defined as the target segment (TS) and the CS tributary containing TS was defined as the target vein (TV). Weighted κ statistics with 95% confidence intervals were computed to assess intra- and interobserver agreement for TS and TV. RESULTS We mapped 258 segments within 131 veins. Weighted κ values for repeatability were 0.85 (0.81-0.89) for TS and 0.92 (0.89-0.93) for TV, and weighted κ values of interobserver agreement ranged from 0.70 (0.61-0.73) to 0.80 (0.76-0.83) for TS and 0.73 (0.64-0.78) to 0.86 (0.83-0.89) for TV among all three observers. CONCLUSION The reproducibility and repeatability of identifying the latest electrically activated segment during mapping of all available CS branches in patients receiving CRT range from good to very good.
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Affiliation(s)
- Mads B Kronborg
- Department of Cardiology, Aarhus University Hospital, Aarhus, Denmark
| | | | - Jens Kristensen
- Department of Cardiology, Aarhus University Hospital, Aarhus, Denmark
| | - Christian Gerdes
- Department of Cardiology, Aarhus University Hospital, Aarhus, Denmark
| | - Jens C Nielsen
- Department of Cardiology, Aarhus University Hospital, Aarhus, Denmark
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