Association of cardiothoracic ratio with heart failure hospitalization in patients with atrial fibrillation: the Fushimi AF Registry

Abstract Background Chest radiography is the most common diagnostic imaging test in clinical medicine, and cardiothoracic ratio (CTR) a readily available non-invasive tool with which to assess volume status cardiomegaly. However, it remains unknown whether CTR on chest associated incidence of HF hospitalization AF patients unclear. Methods The Fushimi Registry community-based prospective survey Fushimi-ku, Kyoto, Japan. inclusion criterion registry documentation at 12-lead electrocardiogram or Holter monitoring any time, there are no exclusion criteria. We started enroll from March 2011, follow-up data were for 4,489 by end August 2021. In present study, 3,727 examined. divided into two groups according their baseline; Higher group (CTR ≥50.0%, n=2,696) Lower <50.0%, n=1,031), compared background outcomes between groups. Results proportion female was grater group, older. had higher prevalence HF, hypertension chronic kidney disease. During median 3,033 days, Kaplan-Meier analysis, rates (Higher group: 2.5% per person-year vs. 1.1%; p<0.01). Multivariate Cox proportional hazards regression analysis revealed that (≥50.0%) an independent determinant hospitalization. Furthermore, when we four based quartile CTR; Q1 (CTR<49.0%), Q2 (49.0≤CTR<53.8%), Q3 (53.8≤CTR<59.0%), Q4 (59.0%≤CTR), more frequent CTR, regardless presence absence prior (Figure). Conclusion Japanese patients, significantly hospitalization, HF. Funding Acknowledgement Type funding sources: None.