{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,28]],"date-time":"2026-04-28T18:11:39Z","timestamp":1777399899309,"version":"3.51.4"},"reference-count":21,"publisher":"SAGE Publications","issue":"9","license":[{"start":{"date-parts":[[1988,9,1]],"date-time":"1988-09-01T00:00:00Z","timestamp":589075200000},"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":["Angiology"],"published-print":{"date-parts":[[1988,9]]},"abstract":"\n In order to evaluate the pulmonary hemodynamics in primary pulmonary hypertension, the relation between the standard 12-lead electrocardiogram (ECG) and pulmonary hemodynamics as determined by right-heart catheteriza tion was analyzed. Significant positive correlations were noted between ampli tude of the R in V\n 1<\/jats:sub>\n , the R\/S ratio in V\n 1<\/jats:sub>\n , and the pulmonary artery systolic pressure (r=0.46 and 0.50, respectively, p < 0.01). An amplitude of the R in V\n 1<\/jats:sub>\n of more than 1.2 mV indicated a pulmonary artery systolic pressure of more than 90 mmHg with a sensitivity of 94% and a specificity of 47%. The cardiac index showed a significant positive relationship with amplitude of the R in V\n 5<\/jats:sub>\n and V\n 6<\/jats:sub>\n and the R\/S ratio in Vs and V\n 6<\/jats:sub>\n (r = 0.46, 0.46, 0.39, and 0.48, respec tively ; each with a p < 0.01). Moreover, an \u00c2QRS \u2265 100\u00b0, and either an SV\n 6<\/jats:sub>\n \u2265 0.7 mV, or R\/SV\n 6<\/jats:sub>\n \u2264 2 indicated a cardiac index of < 2.8L\/min\/m\n 2<\/jats:sup>\n with a sensitivity of 82% and 84% and a specificity of 86% and 100% respectively. This study suggests, therefore, that the 12-lead ECG is useful for the evalua tion of the severity of pulmonary hypertension by its ability to predict pulmo nary artery systolic pressure and cardiac index with clinically useful accuracy.\n <\/jats:p>","DOI":"10.1177\/000331978803900901","type":"journal-article","created":{"date-parts":[[2007,11,26]],"date-time":"2007-11-26T17:46:29Z","timestamp":1196099189000},"page":"781-787","source":"Crossref","is-referenced-by-count":15,"title":["Electrocardiographic and Hemodynamic Correlations in Primary Pulmonary Hypertension"],"prefix":"10.1177","volume":"39","author":[{"given":"Nariaki","family":"Kanemoto","sequence":"first","affiliation":[{"name":"From the Department of Internal Medicine, School of Medicine, Tokai University, Kanagawa, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[1988,9,1]]},"reference":[{"key":"atypb1","volume-title":"Report on a WHO meeting. Primary pulmonary hypertension","author":"Hatano S.","year":"1975"},{"key":"atypb2","volume-title":"Annual Report of the Ministry of Health and Welfare Primary Pulmonary Hypertension Research Committee","year":"1976"},{"key":"atypb3","doi-asserted-by":"publisher","DOI":"10.1097\/00005792-198601000-00004"},{"key":"atypb4","first-page":"265","volume":"4","author":"Kanemoto N.","year":"1979","journal-title":"Tokai J Exp Clin Med"},{"key":"atypb5","first-page":"634","volume":"20","author":"Kanemoto N.","year":"1982","journal-title":"Jpn J Thorac Dis"},{"key":"atypb6","first-page":"79","volume":"17","author":"Kanemoto N.","year":"1974","journal-title":"Med J"},{"key":"atypb7","doi-asserted-by":"publisher","DOI":"10.1536\/ihj.20.395"},{"key":"atypb8","doi-asserted-by":"publisher","DOI":"10.1016\/0002-9343(84)90279-1"},{"key":"atypb9","doi-asserted-by":"publisher","DOI":"10.1016\/0002-8703(87)90510-2"},{"key":"atypb10","doi-asserted-by":"publisher","DOI":"10.1016\/0002-8703(49)91335-6"},{"key":"atypb11","doi-asserted-by":"publisher","DOI":"10.1056\/NEJM196605262742104"},{"key":"atypb12","doi-asserted-by":"publisher","DOI":"10.1016\/0002-8703(48)90182-3"},{"key":"atypb13","doi-asserted-by":"publisher","DOI":"10.1161\/01.CIR.16.3.348"},{"key":"atypb14","doi-asserted-by":"publisher","DOI":"10.1016\/0002-9149(61)90504-5"},{"key":"atypb15","doi-asserted-by":"publisher","DOI":"10.1161\/01.CIR.11.2.223"},{"key":"atypb16","doi-asserted-by":"publisher","DOI":"10.1253\/jcj.30.435"},{"key":"atypb17","doi-asserted-by":"publisher","DOI":"10.1161\/01.CIR.42.5.903"},{"key":"atypb18","first-page":"24","volume":"38","author":"Harasawa M.","year":"1979","journal-title":"Nihonkyoburinsho"},{"key":"atypb19","doi-asserted-by":"publisher","DOI":"10.1016\/0002-8703(83)90288-0"},{"key":"atypb20","doi-asserted-by":"publisher","DOI":"10.1016\/S0025-6196(12)62055-2"},{"key":"atypb21","doi-asserted-by":"publisher","DOI":"10.1016\/S0002-9343(70)80115-2"}],"container-title":["Angiology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/000331978803900901","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/000331978803900901","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,4,28]],"date-time":"2026-04-28T10:16:06Z","timestamp":1777371366000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.sagepub.com\/doi\/10.1177\/000331978803900901"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1988,9]]},"references-count":21,"journal-issue":{"issue":"9","published-print":{"date-parts":[[1988,9]]}},"alternative-id":["10.1177\/000331978803900901"],"URL":"https:\/\/doi.org\/10.1177\/000331978803900901","relation":{},"ISSN":["0003-3197","1940-1574"],"issn-type":[{"value":"0003-3197","type":"print"},{"value":"1940-1574","type":"electronic"}],"subject":[],"published":{"date-parts":[[1988,9]]}}}