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Conduction system pacing compared with biventricular pacing for cardiac resynchronization therapy in patients with heart failure and mildly reduced left ventricular ejection fraction: Results from International Collaborative LBBAP Study (I-CLAS) Group

P. Vijayaraman, F. Zanon, SS. Ponnusamy, B. Herweg, P. Sharma, M. Molina-Lerma, M. Jastrzębski, Z. Whinnett, K. Vernooy, RK. Pathak, R. Tung, G. Upadhyay, K. Curila, D. Zalavadia, N. Shah, L. Marcantoni, M. Gad, R. Morcos, P. Moskal, A. Naraen,...

. 2025 ; 22 (6) : 1512-1522. [pub] 20240927

Jazyk angličtina Země Spojené státy americké

Typ dokumentu srovnávací studie, časopisecké články, multicentrická studie, pozorovací studie

Perzistentní odkaz   https://www.medvik.cz/link/bmc25015597

BACKGROUND: Cardiac resynchronization therapy (CRT) is a guideline-recommended therapy in patients with heart failure with mildly reduced ejection fraction (HFmrEF, 36%-50%) and left bundle branch block or indication for ventricular pacing. Conduction system pacing (CSP) using left bundle branch area pacing or His bundle pacing has been shown to be a safe and physiologic alternative to biventricular pacing (BVP). OBJECTIVE: The aim of this study was to compare the clinical outcomes between BVP and CSP for patients with HFmrEF undergoing CRT. METHODS: Consecutive patients who underwent BVP or CSP with HFmrEF between January 2018 and June 2023 at 16 international centers were included. The primary outcome was the composite end point of time to death or heart failure hospitalization (HFH). Secondary end points included change in left ventricular ejection fraction (LVEF) and individual end points of death and HFH. RESULTS: A total of 1004 patients met inclusion criteria: BVP, 178; CSP, 826 (His bundle pacing, 154; left bundle branch area pacing, 672). Mean age was 73 ± 13 years; female, 34%; and LVEF, 42% ± 5%. Paced QRS duration in CSP was significantly narrower compared with BVP (129 ± 21 ms vs 144 ± 19 ms; P < .001). LVEF improved during follow-up in both groups (49% ± 10% vs 48% ± 10%; P = .32). CSP was independently associated with significant reduction in the primary end point of time to death or HFH compared with BVP (22% vs 34%; hazard ratio, 0.64; 95% confidence interval, 0.43-0.94; P = .025). CONCLUSION: CSP was associated with improved clinical outcomes compared with BVP in this large cohort of patients with HFmrEF undergoing CRT. Randomized controlled trials comparing CSP with BVP will be necessary to confirm these results.

Citace poskytuje Crossref.org

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$a BACKGROUND: Cardiac resynchronization therapy (CRT) is a guideline-recommended therapy in patients with heart failure with mildly reduced ejection fraction (HFmrEF, 36%-50%) and left bundle branch block or indication for ventricular pacing. Conduction system pacing (CSP) using left bundle branch area pacing or His bundle pacing has been shown to be a safe and physiologic alternative to biventricular pacing (BVP). OBJECTIVE: The aim of this study was to compare the clinical outcomes between BVP and CSP for patients with HFmrEF undergoing CRT. METHODS: Consecutive patients who underwent BVP or CSP with HFmrEF between January 2018 and June 2023 at 16 international centers were included. The primary outcome was the composite end point of time to death or heart failure hospitalization (HFH). Secondary end points included change in left ventricular ejection fraction (LVEF) and individual end points of death and HFH. RESULTS: A total of 1004 patients met inclusion criteria: BVP, 178; CSP, 826 (His bundle pacing, 154; left bundle branch area pacing, 672). Mean age was 73 ± 13 years; female, 34%; and LVEF, 42% ± 5%. Paced QRS duration in CSP was significantly narrower compared with BVP (129 ± 21 ms vs 144 ± 19 ms; P < .001). LVEF improved during follow-up in both groups (49% ± 10% vs 48% ± 10%; P = .32). CSP was independently associated with significant reduction in the primary end point of time to death or HFH compared with BVP (22% vs 34%; hazard ratio, 0.64; 95% confidence interval, 0.43-0.94; P = .025). CONCLUSION: CSP was associated with improved clinical outcomes compared with BVP in this large cohort of patients with HFmrEF undergoing CRT. Randomized controlled trials comparing CSP with BVP will be necessary to confirm these results.
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$a Jastrzębski, Marek $u First Department of Cardiology, Interventional Electrocardiology and Hypertension, Jagiellonian University, Krakow, Poland
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$a Whinnett, Zachary $u Imperial College, London, United Kingdom
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$a Vernooy, Kevin $u Department of Cardiology, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University Medical Center, Maastricht, The Netherlands
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$a Pathak, Rajeev K $u Australian National University, Canberra Heart Rhythm, Canberra, Australia
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$a Tung, Roderick $u Banner Health, Phoenix, Arizona
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$a Upadhyay, Gaurav $u University of Chicago, Chicago, Illinois
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$a Zalavadia, Dipen $u Geisinger Heart Institute, Wilkes Barre, Pennsylvania
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$a Marcantoni, Lina $u Santa Maria della Misericordia Hospital, Rovigo, Italy
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$a Gad, Mohamed $u Baylor College of Medicine, Houston, Texas
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$a Morcos, Ramez $u Geisinger Heart Institute, Wilkes Barre, Pennsylvania
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$a Moskal, Pawel $u First Department of Cardiology, Interventional Electrocardiology and Hypertension, Jagiellonian University, Krakow, Poland
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$a Skeete, Jamario R $u Rush University, Chicago, Illinois
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$a Kolominsky, Jeffrey $u VCU Health System, Richmond, Virginia
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$a van Koll, Johan $u Department of Cardiology, Cardiovascular Research Institute Maastricht (CARIM), Maastricht University Medical Center, Maastricht, The Netherlands
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$a Chelu, Mihail G $u Baylor College of Medicine, Houston, Texas
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$a Ellenbogen, Kenneth A $u VCU Health System, Richmond, Virginia
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