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Acute heart failure (AHF) is a common complication of inflammatory rheumatic disease (IRD) and usually coexists with tachycardia. Ivabradine, a direct sinus node inhibitor, which was proven to have favorable effects in patients with chronic HF (CHF), has not been sufficiently evaluated in AHF patients regarding its efficacy and safety. The present study sought to explore the effectiveness of early short-term ivabradine treatment in new-onset AHF and concurrent sinus tachycardia in patients with IRD. A total of 12 consecutive patients with IRD, who had new-onset AHF and concurrent sinus tachycardia, were prescribed ivabradine and were retrospectively recruited. Standard medication therapy for AHF was also administered. The heart rate (HR), left ventricular ejection fraction (LVEF), biomarkers of HF and New York Heart Association (NYHA) classification score were compared prior to and after ivabradine treatment. After 48 h of treatment with ivabradine, the mean resting HR decreased from 118.0±13.8 to 83.3±7.3 bpm (P&lt;0.001). Transthoracic echocardiography indicated a significant improvement in the LVEF on an average of 2 weeks after ivabradine prescription when compared with the baseline evaluation (51.2±8.4 vs. 38.0±9.0%; P&lt;0.001). In addition, ivabradine treatment resulted in significantly decreased N-terminal proB-type natriuretic peptide (4,900±3,672 vs. 16,806±16,130 pg/ml; P=0.045) and improvement of the NYHA classification score (2.3±0.6 vs. 3.5±0.5; P&lt;0.001) at 2 weeks when compared with the baseline. Overall, the results of the present study suggested that early use of ivabradine is safe in IRD patients with new-onset AHF and enhances the sinus rate reduction, which may improve heart function.

Early short‑term ivabradine treatment in new‑onset acute systolic heart failure and sinus tachycardia patients with inflammatory rheumatic disease