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This retrospective study was aimed to explore the predictive value of the MHR for the late recurrence of AF after radiofrequency ablation.<\/jats:p>\n<\/jats:sec><jats:sec>\n<jats:title>Methods<\/jats:title>\n<jats:p>From April 2015 to October 2018, patients with paroxysmal AF who had undergone radiofrequency catheter ablation at Subei People\u2019s Hospital of Jiangsu Province were enrolled in our study. All the participants were observed until November 2019 after the procedure. During the postoperative follow up, the patients were categorized into the recurrence group and maintenance of sinus rhythm group based on who had experienced AF recurrence.<\/jats:p>\n<\/jats:sec><jats:sec>\n<jats:title>Results<\/jats:title>\n<jats:p>One hundred twenty-five patients were diagnosed with paroxysmal AF, with an average age of 61.2\u2009\u00b1\u20099.3\u2009years. Forty-seven patients had developed late recurrence during a mean follow up of 25.1\u2009\u00b1\u200912.0\u2009months. The AF recurrence event rates were significantly increased in the highest MHR tertile compared with those in the lowest MHR tertile (22.0% vs. 57.1%; <jats:italic>P<\/jats:italic>\u2009&lt;\u20090.05). On multivariate logistic regression analysis, the preablation MHR (<jats:italic>OR<\/jats:italic>\u2009=\u20091.34; 95% <jats:italic>CI<\/jats:italic>\u2009=\u20091.12\u2009~\u20091.60; <jats:italic>P<\/jats:italic>\u2009=\u20090.001) and left atrial diameter (LAD) (<jats:italic>OR<\/jats:italic>\u2009=\u20091.21, 95% <jats:italic>CI<\/jats:italic>\u2009=\u20091.08\u2009~\u20091.35; <jats:italic>P<\/jats:italic>\u2009=\u20090.001) were independent risk factors predicting the recurrence of AF after radiofrequency ablation. Furthermore, receiver operating characteristic (ROC) curve analysis revealed that the area under the curve (AUC) of the MHR was 0.712 (95% <jats:italic>CI<\/jats:italic>\u2009=\u20090.618\u2009~\u20090.806; <jats:italic>P<\/jats:italic>\u2009=\u20090.000) and that of LAD was 0.739 (95% <jats:italic>CI<\/jats:italic>\u2009=\u20090.653\u2009~\u20090.814; <jats:italic>P<\/jats:italic>\u2009=\u20090.000). Z-test found no significant difference between the MHR and LAD regarding the AUC (<jats:italic>Z<\/jats:italic>\u2009=\u20090.451; <jats:italic>P<\/jats:italic>\u2009=\u20090.652).<\/jats:p>\n<\/jats:sec><jats:sec>\n<jats:title>Conclusion<\/jats:title>\n<jats:p>An elevated preablation MHR was associated with an increased risk of the postoperative recurrence of AF. Additionally, the MHR independently predicted the late recurrence of paroxysmal AF after radiofrequency ablation, with the same predictive value as LAD.<\/jats:p>\n<\/jats:sec>","DOI":"10.1186\/s12872-020-01670-3","type":"journal-article","created":{"date-parts":[[2020,9,14]],"date-time":"2020-09-14T10:43:35Z","timestamp":1600080215000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":27,"title":["The preablation monocyte\/ high density lipoprotein ratio predicts the late recurrence of paroxysmal atrial fibrillation after radiofrequency ablation"],"prefix":"10.1186","volume":"20","author":[{"given":"She-an","family":"Chen","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Man-man","family":"Zhang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Meifang","family":"Zheng","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Fei","family":"Liu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lei","family":"Sun","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zheng-yu","family":"Bao","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Fu-kun","family":"Chen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hong-xiao","family":"Li","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0240-9403","authenticated-orcid":false,"given":"Xiang","family":"Gu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2020,9,7]]},"reference":[{"issue":"2","key":"1670_CR1","doi-asserted-by":"publisher","first-page":"255","DOI":"10.1016\/j.ccl.2015.12.002","volume":"34","author":"F Pistoia","year":"2016","unstructured":"Pistoia F, Sacco S, Tiseo C, et al. 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