{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,5,14]],"date-time":"2025-05-14T01:00:31Z","timestamp":1747184431450,"version":"3.40.5"},"reference-count":31,"publisher":"Wiley","issue":"11","license":[{"start":{"date-parts":[[2023,9,7]],"date-time":"2023-09-07T00:00:00Z","timestamp":1694044800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Echocardiography"],"published-print":{"date-parts":[[2023,11]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Aim<\/jats:title><jats:p>This study assessed RV dyssynchrony (irrespective to QRS duration) and RV systolic function in non\u2010ischemic dilated cardiomyopathy (NIDCM) versus ischemic dilated cardiomyopathy (IDCM) patients by using different echo\u2010Doppler modalities.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Eighty\u2010five cases (48 patients with DCM [whether ischemic or non\u2010ischemic] and 37 age\u2010matched healthy controls) were studied. Conventional echo\u2010Doppler study, tissue Doppler (TDI), and speckle tracking (STE) were carried out to measure LV and RV systolic function. Time\u2010to\u2010peak negative longitudinal strain at the four RV sites were assessed by TDI derived strain and 2D speckle tracking.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Patients with DCM (whether ischemic or non\u2010ischemic) had significantly lower fractional area change, RV tricuspid annular systolic velocity (<jats:italic>p<\/jats:italic>\u00a0&lt;\u00a0.001 for both), tricuspid annular plane systolic excursion (<jats:italic>p<\/jats:italic>\u00a0=\u00a0.01), RV\u2010GLS whether TDI or 2D derived (<jats:italic>p<\/jats:italic>\u00a0&lt;\u00a0.001). Twenty\u2010nine patients (60%) showed right intraventricular delay (RV4SD\u00a0&gt;\u00a060\u00a0ms). The RV\u2010dyssynchrony index was negatively correlated to %FAC (<jats:italic>r<\/jats:italic>\u00a0=\u00a0\u2212.362, <jats:italic>p<\/jats:italic>\u00a0=\u00a0.01), RV Sm (<jats:italic>r<\/jats:italic>\u00a0=\u00a0\u2212.312, <jats:italic>p<\/jats:italic>\u00a0=\u00a0.04), and 2D\u2010RV GLS (<jats:italic>r<\/jats:italic>\u00a0=\u00a0\u2212.305, <jats:italic>p<\/jats:italic>\u00a0=\u00a0.05). Insignificant higher RV\u2010dysynchrony index was detected in NIDCM compared to IDCM group; however, the basal septal segment was significantly delayed in dilated group. More impaired RV systolic function was detected in ischemic group. 2D STE and TDI showed a significant correlation in the assessment of the right\u2010intraventricular delay (<jats:italic>p<\/jats:italic>\u00a0=\u00a0.001).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Right\u2010intraventricular dyssynchrony are detectable in patients with dilated cardiomyopathy (whether ischemic or non\u2010ischemic) with a higher statistically insignificant value in non\u2010ischemic group by using tissue Doppler imaging and 2D speckle tracking. More impairment of the RV systolic function was noticed in the ischemic group. Impaired RV systolic function was associated with right intraventricular delay.<\/jats:p><\/jats:sec>","DOI":"10.1111\/echo.15676","type":"journal-article","created":{"date-parts":[[2023,9,7]],"date-time":"2023-09-07T14:54:23Z","timestamp":1694098463000},"page":"1166-1176","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Right ventricular systolic function and mechanical dyssynchrony in ischemic or non\u2010ischemic dilated cardiomyopathy: A speckle\u2010tracking study"],"prefix":"10.1111","volume":"40","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0054-8733","authenticated-orcid":false,"given":"Asmaa Ahmed","family":"Ali","sequence":"first","affiliation":[{"name":"Department of Cardiology Faculty of Medicine (for girls) Al\u2010Azhar University  Cairo Egypt"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shaimaa Ahmed","family":"Habib","sequence":"additional","affiliation":[{"name":"Department of Cardiology Faculty of Medicine (for girls) Al\u2010Azhar University  Cairo Egypt"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ola Hassan","family":"AbdElaziz","sequence":"additional","affiliation":[{"name":"Department of Cardiology Faculty of Medicine (for girls) Al\u2010Azhar University  Cairo Egypt"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Safaa Abouelfadl","family":"Mohammad","sequence":"additional","affiliation":[{"name":"Department of Cardiology Faculty of Medicine (for girls) Al\u2010Azhar University  Cairo 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