{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,22]],"date-time":"2026-07-22T23:13:53Z","timestamp":1784762033076,"version":"3.55.0"},"reference-count":28,"publisher":"Oxford University Press (OUP)","issue":"6","license":[{"start":{"date-parts":[[2023,2,26]],"date-time":"2023-02-26T00:00:00Z","timestamp":1677369600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100015797","name":"Austrian Society of Cardiology","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100015797","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100010109","name":"Medical University of Graz","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100010109","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001659","name":"Deutsche Forschungsgemeinschaft","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100001659","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2023,5,31]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:sec>\n                  <jats:title>Aims<\/jats:title>\n                  <jats:p>Echocardiographic diagnosis of left ventricular outflow tract obstruction (LVOTO) in hypertrophic cardiomyopathy (HCM) often requires extensive provocative manoeuvers. We investigated, whether echocardiography-derived parameters obtained at rest can aid to determine the presence of LVOTO in persons with HCM.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Methods and results<\/jats:title>\n                  <jats:p>Consecutive patients with HCM admitted to a referral centre underwent standardized transthoracic echocardiographic examination including provocative manoeuvers. Under resting conditions, the length of mitral leaflets and distances between mitral valve coordinates and ventricular walls were blindly measured in parasternal long axis (PLAX) and apical three-chamber (3ch) views, both at early and late systole. Among 142 patients (mean age 59 \u00b1 13 years, 42% women), 68 (42%) had resting or provocable LVOTO with maximal LVOT gradients \u226530 mmHg. Late-systolic distance between mitral leaflet tip and ventricular septum (TIS) was measurable in 137 participants (96%) in 3ch view and independently associated with LVOTO in multivariable logistic regression analysis. The area under the ROC curve of TIS for the identification of LVOTO was 0.91 [95% confidence interval (CI) 0.87\u20130.96]. TIS \u2264 14 mm yielded 97% sensitivity and 57% specificity regarding LVOTO. TIS &amp;gt;14 mm ruled out LVOTO with a negative predictive value of 95%. TIS \u22649 mm ruled in LVOTO with a positive predictive value of 92% (sensitivity 73%, specificity 95%). Among 43 patients with TIS between 10 and 14 mm, 35% had LVOTO.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Conclusion<\/jats:title>\n                  <jats:p>In our study, the novel echocardiographic parameter TIS showed high negative and positive predictive values for LVOTO in HCM. These exploratory results await confirmation in larger collectives and prospective investigations.<\/jats:p>\n               <\/jats:sec>","DOI":"10.1093\/ehjci\/jead036","type":"journal-article","created":{"date-parts":[[2023,2,26]],"date-time":"2023-02-26T06:01:06Z","timestamp":1677391266000},"page":"710-718","source":"Crossref","is-referenced-by-count":13,"title":["Spatial relationship between mitral valve and ventricular septum assessed by resting echocardiography to diagnose left ventricular outflow tract obstruction in hypertrophic cardiomyopathy"],"prefix":"10.1093","volume":"24","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7414-4056","authenticated-orcid":false,"given":"Nicolas","family":"Verheyen","sequence":"first","affiliation":[{"name":"Division of Cardiology, University Heart Center, Department of Internal Medicine, Medical University of Graz , Auenbruggerplatz 15, 8036 Graz , Austria"},{"name":"Comprehensive Heart Failure Center, University Hospital W\u00fcrzburg , Am Schwarzenberg 15, 97078 W\u00fcrzburg , Germany"},{"name":"Department of Internal Medicine I, University Hospital W\u00fcrzburg , Oberd\u00fcrrbacher Stra\u00dfe 6, Haus A15, 97080 W\u00fcrzburg , Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8268-6039","authenticated-orcid":false,"given":"Angelika","family":"Batzner","sequence":"additional","affiliation":[{"name":"Comprehensive Heart Failure Center, University Hospital W\u00fcrzburg , Am Schwarzenberg 15, 97078 W\u00fcrzburg , Germany"},{"name":"Department of Internal Medicine I, University Hospital W\u00fcrzburg , Oberd\u00fcrrbacher Stra\u00dfe 6, Haus A15, 97080 W\u00fcrzburg , Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0815-6731","authenticated-orcid":false,"given":"David","family":"Zach","sequence":"additional","affiliation":[{"name":"Division of Cardiology, University Heart Center, Department of Internal Medicine, Medical University of Graz , Auenbruggerplatz 15, 8036 Graz , Austria"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6290-3297","authenticated-orcid":false,"given":"Andreas","family":"Zirlik","sequence":"additional","affiliation":[{"name":"Division of Cardiology, University Heart Center, Department of Internal Medicine, Medical University of Graz , Auenbruggerplatz 15, 8036 Graz , Austria"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1363-8826","authenticated-orcid":false,"given":"Brenda","family":"Gerull","sequence":"additional","affiliation":[{"name":"Comprehensive Heart Failure Center, University Hospital W\u00fcrzburg , Am Schwarzenberg 15, 97078 W\u00fcrzburg , Germany"},{"name":"Department of Internal Medicine I, University Hospital W\u00fcrzburg , Oberd\u00fcrrbacher Stra\u00dfe 6, Haus A15, 97080 W\u00fcrzburg , Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0301-6185","authenticated-orcid":false,"given":"Stefan","family":"Frantz","sequence":"additional","affiliation":[{"name":"Comprehensive Heart Failure Center, University Hospital W\u00fcrzburg , Am Schwarzenberg 15, 97078 W\u00fcrzburg , Germany"},{"name":"Department of Internal Medicine I, University Hospital W\u00fcrzburg , Oberd\u00fcrrbacher Stra\u00dfe 6, Haus A15, 97080 W\u00fcrzburg , Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3694-4559","authenticated-orcid":false,"given":"Christoph","family":"Maack","sequence":"additional","affiliation":[{"name":"Comprehensive Heart Failure Center, University Hospital W\u00fcrzburg , Am Schwarzenberg 15, 97078 W\u00fcrzburg , Germany"},{"name":"Department of Internal Medicine I, University Hospital W\u00fcrzburg , Oberd\u00fcrrbacher Stra\u00dfe 6, Haus A15, 97080 W\u00fcrzburg , 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