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Article Abstract
Background: Electrical cardioversion (ECV) is highly effective in restoring sinus rhythm in patients with atrial fibrillation (AF), but it does not influence long-term rhythm control. Remote ischemic preconditioning (RIPC) has demonstrated various cardioprotective effects. Combining ECV with RIPC could provide a promising approach to minimizing AF recurrences after successful ECV.
Methods: This prospective, randomized, single-blinded, single-centre study investigated the impact of RIPC on early AF recurrence following successful ECV (defined as sinus rhythm ≥ 30 seconds). Patients were randomized in a 1:1 ratio to receive either RIPC or sham preconditioning before ECV. RIPC was performed in a standardized manner, with 3 cycles of 5-minute forearm ischemia followed by 5 minutes of reperfusion. The primary efficacy endpoint was AF recurrence after 30 days. Safety endpoints included death, stroke, and procedure-related complications. Secondary endpoints were acute ECV success, mean energy, and number of shocks required to restore sinus rhythm.
Results: A total of 240 patients were enrolled. Of these, 214 (89%) had successful ECV. At follow-up, the RIPC group did not show a lower AF recurrence rate, compared to that in the sham group (39% vs 36%, = 0.63), and no effect of RIPC on cardioversion parameters was seen. One stroke occurred in the RIPC group. The study was terminated before the number of prespecified follow-up visits was reached, due to determination of futility.
Conclusions: RIPC did not impact the short-term rhythm-control or cardioversion procedure in patients with AF undergoing ECV.
Clinical Trial Registration: NCT05342220.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC12105482 | PMC |
| http://dx.doi.org/10.1016/j.cjco.2025.03.004 | DOI Listing |
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