{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,15]],"date-time":"2026-01-15T23:30:18Z","timestamp":1768519818599,"version":"3.49.0"},"reference-count":33,"publisher":"Wiley","issue":"13","license":[{"start":{"date-parts":[[2023,7,2]],"date-time":"2023-07-02T00:00:00Z","timestamp":1688256000000},"content-version":"vor","delay-in-days":1,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["physoc.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Physiological Reports"],"published-print":{"date-parts":[[2023,7]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Diastolic stiffness coefficient (\u03b2) and end\u2010diastolic elastance (Eed) are ventricular\u2010specific diastolic parameters. However, the diastolic function of right ventricle had not been investigated sufficiently due to the lack of established evaluation method. We evaluated the validity of these parameters calculated using only data of right heart catheterization (RHC) and assessed it in patients with restrictive cardiomyopathy (RCM) and cardiac amyloidosis. We retrospectively analyzed 46 patients with heart failure who underwent RHC within 10\u2009days of cardiac magnetic resonance (CMR). Right ventricular end\u2010diastolic volume and end\u2010systolic volume were calculated using only RHC data, which were found to be finely correlated with those obtained from CMR. \u03b2 and Eed calculated by this method were also significantly correlated with those derived from conventional method using CMR. By this method, \u03b2 and Eed were significantly higher in RCM with amyloidosis group than dilated cardiomyopathy group. In addition, the \u03b2 and Eed calculated by our method were finely correlated with E\/A ratio on echocardiography. We established an easy method to estimate \u03b2 and Eed of right ventricle from only RHC. The method finely demonstrated right ventricular diastolic dysfunction in patients with RCM and amyloidosis.<\/jats:p>","DOI":"10.14814\/phy2.15751","type":"journal-article","created":{"date-parts":[[2023,7,3]],"date-time":"2023-07-03T02:10:27Z","timestamp":1688350227000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["A new assessment method for right ventricular diastolic function using right heart catheterization by pressure\u2010volume loop"],"prefix":"10.14814","volume":"11","author":[{"given":"Yoshitaka","family":"Isotani","sequence":"first","affiliation":[{"name":"Department of Cardiovascular Medicine, Graduate School of Medicine The University of Tokyo  Bunkyo\u2010ku Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2810-8040","authenticated-orcid":false,"given":"Eisuke","family":"Amiya","sequence":"additional","affiliation":[{"name":"Department of 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