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Connective tissue disorders (CTDs) are claimed as a clinical turning point, suggesting early surgery in BAV patients with CTD. Thus, we aimed at developing a score to detect high risk of carrying CTDs in consecutive BAVs from primary care. Ninety-eight BAVs without ectopia lentis or personal\/family history of aortic dissection were studied at the Marfan syndrome Tuscany Referral Center. Findings were compared with those detected in 84 Marfan patients matched for sex and age. We selected traits with high statistical difference between MFS and BAV easily obtainable by cardiologists\u00a0and primary-care internists: mitral valve prolapse, myopia\u2009\u2265\u20093DO, pectus carenatum, pes planus, wrist and thumb signs, and difference between aortic size at root and ascending aorta\u2009\u2265\u20094\u00a0mm. Clustering of\u2009\u2265\u20093 of these manifestations were more frequent in Marfan patients than in BAVs (71.4% vs 6.1%, <jats:italic>p<\/jats:italic>\u2009&lt;\u20090.0001) resulting into an Odds Ratio to be affected by MFS of 38.3 (95% confidence intervals 14.8\u201399.3, <jats:italic>p<\/jats:italic>\u2009&lt;\u20090.0001). We propose a score assembling simple clinical and echocardiographic variables resulting in an appropriate referral pattern of BAVs from a primary-care setting to a tertiary center to evaluate the presence of a potential, major CTD.<\/jats:p>","DOI":"10.1007\/s11739-020-02458-1","type":"journal-article","created":{"date-parts":[[2020,9,19]],"date-time":"2020-09-19T14:02:44Z","timestamp":1600524164000},"page":"609-615","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["When should a rare inherited connective tissue disorder be suspected in bicuspid aortic valve by primary-care internists and cardiologists? Proposal of a score"],"prefix":"10.1007","volume":"16","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9825-6618","authenticated-orcid":false,"given":"Guglielmina","family":"Pepe","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8708-9444","authenticated-orcid":false,"given":"Betti","family":"Giusti","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Stefania","family":"Colonna","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Maria Pia","family":"Fugazzaro","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0990-4618","authenticated-orcid":false,"given":"Elena","family":"Sticchi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8376-2523","authenticated-orcid":false,"given":"Rosina","family":"De Cario","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2810-7905","authenticated-orcid":false,"given":"Ada","family":"Kura","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Elisa","family":"Pratelli","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8510-0304","authenticated-orcid":false,"given":"Daniela","family":"Melchiorre","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Stefano","family":"Nistri","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2020,9,19]]},"reference":[{"key":"2458_CR1","doi-asserted-by":"publisher","first-page":"718","DOI":"10.1016\/j.amjcard.2005.04.051","volume":"96","author":"S Nistri","year":"2005","unstructured":"Nistri S, Basso C, Marzari C, Mormino P, Thiene G (2005) Frequency of bicuspid aortic valve in young male conscripts by echocardiogram. 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