20.500.12556/DiRROS-24958 Conduction system pacing vs. biventricular pacing for cardiac resynchronization the CSP-SYNC randomized single centre study Aims: There are limited prospective randomized studies comparing left bundle branch area pacing (LBBAP) and biventricular (BiV) pacing for cardiac resynchronization therapy (CRT). The study tested whether LBBAP is non-inferior to BiV pacing in patients with Class I indication for CRT. Methods and results: The CSP-SYNC study is an investigator-initiated, randomized, single-centre study. Sixty-two patients were randomized 1:1 to LBBAP or BiV. The primary study endpoint was the change in left ventricular ejection fraction (LVEF) at 6 months. Secondary endpoints included changes in echo and clinical parameters after 6 months and 12 months. Thirty-one patients were randomized to each arm. Most patients were males (71%), and 32% had ischaemic cardiomyopathy. At 6 months, similar improvement of LVEF was observed in the LBBAP group compared to the BiV group [14.0% (95% confidence interval (CI): 11.2–16.8) in LBBAP vs. 8.5% (95% CI: 5.6–11.2) in BiV] with a mean intergroup difference of 5.6% (95% CI: 1.6–9.5; P < 0.001 for non-inferiority). Both groups showed comparable decrease in LVESV [−64 mL (95% CI: −78 to −50) vs. −40 mL (95% CI: −54 to −25) respectively, mean difference −24 mL (CI 95%: −44 to −4); P < 0.001 for non-inferiority] and changes in 6-min walk test (P < 0.001 for non-inferiority) and NYHA class (P = 0.011 for non-inferiority). Temporal trends of LV remodelling and heart failure hospitalization rates were also comparable. Conclusion: In patients with a Class I indication for CRT, LBBAP was non-inferior to BiV pacing in improving LVEF and provided similar structural and electrical remodelling. cardiac resynchronization therapy biventricular pacing left bundle branch area pacing left bundle branch block conduction system pacing stimulacija prevodnega sistema resinhronizacijsko zdravljenje lovokračni blok true false true Angleški jezik Slovenski jezik Neznano 2026-01-05 15:15:13 2026-01-05 15:15:13 2026-01-06 03:43:51 0000-00-00 00:00:00 2025 0 0 Nasl. z nasl. zaslona; Opis vira z dne 26. 11. 2025; str. 1-10 iss. 9 Vol. 27 2025 0000-00-00 Zaloznikova Objavljeno apc 0000-00-00 0000-00-00 0000-00-00 616.1 1532-2092 10.1093/europace/euaf192 258720259 RAZ_Zizek_David_2025.pdf RAZ_Zizek_David_2025.pdf 1 586F34DE953A9FE67505F1E7E13258EA b0bfd6d3efe9abb56694dbfa1cf30b1abd696789ab8208377afe4175639c0995 1d611741-ea41-11f0-94a7-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=37393 https://academic.oup.com/europace/article/27/9/euaf192/8240303 0 2c91af82-ea41-11f0-94a7-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=37394 Univerzitetni klinični center Ljubljana 0 0 0