{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,2]],"date-time":"2026-05-02T12:36:48Z","timestamp":1777725408890,"version":"3.51.4"},"reference-count":14,"publisher":"SAGE Publications","issue":"5","license":[{"start":{"date-parts":[[1998,10,1]],"date-time":"1998-10-01T00:00:00Z","timestamp":907200000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J Int Med Res"],"published-print":{"date-parts":[[1998,10]]},"abstract":"<jats:p>We evaluated the usefulness of the newly defined Doppler index combining systolic and diastolic myocardial performance, in assessing right-heart dysfunction in 29 patients with chronic respiratory failure caused by old tuberculosis who were on 24-h home oxygen therapy. We measured tricuspid inflow velocity, right-ventricular outflow velocity, late\/early diastolic peak velocities (A\/E), the ratio between pre-ejection period and ejection time (PEP\/ET), and the new index of systolic and diastolic myocardial performance (SDMP) calculated as (isovolumetric contraction time + isovolumetric relaxation time)\/ejection time. The calculated A\/E, PEP\/ET and SDMP in our patients were significantly higher than those in age-matched healthy subjects ( n = 37, mean age 67 \u00b1 8 years). There was no overlap in the SDMP index between healthy subjects and patients and the index was not influenced by heart rate. Our results suggest that SDMP index is a better marker than A\/E and PEP\/ET for the assessment of right-ventricular impairment.<\/jats:p>","DOI":"10.1177\/030006059802600503","type":"journal-article","created":{"date-parts":[[2017,1,15]],"date-time":"2017-01-15T07:11:58Z","timestamp":1484464318000},"page":"239-247","source":"Crossref","is-referenced-by-count":11,"title":["Right Ventricular Impairment in Patients with Chronic Respiratory Failure on Home Oxygen Therapy \u2014 Non-Invasive Assessment Using a New Doppler Index"],"prefix":"10.1177","volume":"26","author":[{"given":"K","family":"Yamaguchi","sequence":"first","affiliation":[{"name":"The Second Department of Internal Medicine, Nagasaki University School of Medicine, Nagasaki, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Y","family":"Miyahara","sequence":"additional","affiliation":[{"name":"The Second Department of Internal Medicine, Nagasaki University School of Medicine, Nagasaki, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"K","family":"Yakabe","sequence":"additional","affiliation":[{"name":"The Second Department of Internal Medicine, Nagasaki University School of Medicine, Nagasaki, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"T","family":"Kiya","sequence":"additional","affiliation":[{"name":"Department of Internal Medicine, National Nagasaki Hospital, Nagasaki, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"M","family":"Nakatomi","sequence":"additional","affiliation":[{"name":"Department of Internal Medicine, National Nagasaki Hospital, Nagasaki, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"M","family":"Shikuwa","sequence":"additional","affiliation":[{"name":"Department of Internal Medicine, National Nagasaki Hospital, Nagasaki, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"S","family":"Kohno","sequence":"additional","affiliation":[{"name":"The Second Department of Internal Medicine, Nagasaki University School of Medicine, Nagasaki, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[1998,10,1]]},"reference":[{"key":"bibr1-030006059802600503","doi-asserted-by":"publisher","DOI":"10.1159\/000410428"},{"key":"bibr2-030006059802600503","doi-asserted-by":"publisher","DOI":"10.1159\/000410429"},{"key":"bibr3-030006059802600503","first-page":"357","volume":"26","author":"Tei C","year":"1995","journal-title":"J Cardiol"},{"key":"bibr4-030006059802600503","doi-asserted-by":"publisher","DOI":"10.1016\/0735-1097(96)00202-1"},{"key":"bibr5-030006059802600503","doi-asserted-by":"publisher","DOI":"10.1016\/S0894-7317(96)90476-9"},{"key":"bibr6-030006059802600503","doi-asserted-by":"publisher","DOI":"10.1161\/01.CIR.68.2.302"},{"key":"bibr7-030006059802600503","doi-asserted-by":"publisher","DOI":"10.1016\/0002-9149(90)90324-T"},{"key":"bibr8-030006059802600503","doi-asserted-by":"crossref","first-page":"438","DOI":"10.1183\/09031936.93.05040438","volume":"5","author":"Marangoni S","year":"1992","journal-title":"Eur Respir J"},{"key":"bibr9-030006059802600503","doi-asserted-by":"publisher","DOI":"10.1161\/01.CIR.93.8.1509"},{"key":"bibr10-030006059802600503","doi-asserted-by":"publisher","DOI":"10.1016\/0735-1097(90)90183-P"},{"key":"bibr11-030006059802600503","doi-asserted-by":"publisher","DOI":"10.1016\/S0735-1097(85)80018-8"},{"key":"bibr12-030006059802600503","doi-asserted-by":"publisher","DOI":"10.1159\/000196455"},{"key":"bibr13-030006059802600503","doi-asserted-by":"publisher","DOI":"10.1016\/0735-1097(96)81240-X"},{"key":"bibr14-030006059802600503","doi-asserted-by":"publisher","DOI":"10.1016\/0002-9149(93)90313-2"}],"container-title":["Journal of International Medical Research"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/030006059802600503","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/030006059802600503","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,4,29]],"date-time":"2026-04-29T10:42:17Z","timestamp":1777459337000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.sagepub.com\/doi\/10.1177\/030006059802600503"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1998,10]]},"references-count":14,"journal-issue":{"issue":"5","published-print":{"date-parts":[[1998,10]]}},"alternative-id":["10.1177\/030006059802600503"],"URL":"https:\/\/doi.org\/10.1177\/030006059802600503","relation":{},"ISSN":["0300-0605","1473-2300"],"issn-type":[{"value":"0300-0605","type":"print"},{"value":"1473-2300","type":"electronic"}],"subject":[],"published":{"date-parts":[[1998,10]]}}}