{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2023,10,23]],"date-time":"2023-10-23T05:04:36Z","timestamp":1698037476158},"reference-count":13,"publisher":"Wiley","issue":"5","license":[{"start":{"date-parts":[[2009,2,4]],"date-time":"2009-02-04T00:00:00Z","timestamp":1233705600000},"content-version":"vor","delay-in-days":7219,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Clinical Cardiology"],"published-print":{"date-parts":[[1989,5]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>The U loop of the vectorcardiogram was examined qualitatively and quantitatively in 100 normal subjects and 67 patients with old myocardial infarction, using a direct\u2010writing vectorcardiograph with memory function. In the control group, the U loop was directed to the left, anteriorly and inferiorly, and it was inscribed counterclockwise in the horizontal plane. In patients with anterior myocardial infarction, the U loop tended to be displaced to the right, and in patients with inferior myocardial infarction to the right and superiorly. The shape of the U loop in patients was also different from that of normal subjects. The maximum U vector was significantly smaller in magnitude both in patients with anterior and inferior myocardial infarction than that of normal subjects (p&gt;0.01). In patients with ventricular aneurysm, the magnitude of the maximum U vector was significantly smaller and its direction was displaced more to the right and posteriorly than those without aneurysm (p&gt;0.01). In standard 12\u2010lead electrocardiogram (ECG), observation of the U wave in patients with old myocardial infarction was difficult, especially in the limb lead, because of the small size of the U wave. Therefore, vectorcardiographic observation may be more useful than electrocardiographic observation for the analysis of the U wave in patients with old myocardial infarction.<\/jats:p>","DOI":"10.1002\/clc.4960120510","type":"journal-article","created":{"date-parts":[[2009,7,15]],"date-time":"2009-07-15T22:08:56Z","timestamp":1247695736000},"page":"277-282","source":"Crossref","is-referenced-by-count":1,"title":["Vector u loop in patients with old myocardial infarction"],"prefix":"10.1002","volume":"12","author":[{"given":"Q.","family":"Yang","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"K.","family":"Kiyoshige","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"T.","family":"Fujimoto","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"M.","family":"Katayama","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"K.","family":"Fujino","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"K.","family":"Saito","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Y.","family":"Nakaya","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"H.","family":"Mori","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2009,2,4]]},"reference":[{"key":"e_1_2_1_2_2","doi-asserted-by":"publisher","DOI":"10.1159\/000169720"},{"key":"e_1_2_1_3_2","doi-asserted-by":"publisher","DOI":"10.1161\/01.CIR.60.5.1014"},{"key":"e_1_2_1_4_2","first-page":"545","article-title":"Resting\u2010U wave inversion as a marker of the left anterior descending coronary artery","volume":"69","author":"Gerson MG","year":"1980","journal-title":"Am J Cardiol"},{"key":"e_1_2_1_5_2","doi-asserted-by":"publisher","DOI":"10.1002\/clc.4960101108"},{"key":"e_1_2_1_6_2","doi-asserted-by":"publisher","DOI":"10.1136\/hrt.50.4.378"},{"key":"e_1_2_1_7_2","doi-asserted-by":"publisher","DOI":"10.1536\/ihj.28.15"},{"key":"e_1_2_1_8_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0022-0736(84)81091-2"},{"key":"e_1_2_1_9_2","first-page":"119","volume-title":"Frontiers of Cardiac Electrophysiology","author":"Kishida H","year":"1983"},{"key":"e_1_2_1_10_2","first-page":"353","volume-title":"Advances in Electrocardiography","author":"Lepeschkin E","year":"1976"},{"key":"e_1_2_1_11_2","first-page":"857","article-title":"Clinical significance of ischemia\u2010induced negative U wave as a marker of myocardial infarction (abstr)","volume":"49","author":"Ono S","year":"1985","journal-title":"Jpn Circ J"},{"key":"e_1_2_1_12_2","doi-asserted-by":"publisher","DOI":"10.1093\/cvr\/16.5.240"},{"key":"e_1_2_1_13_2","doi-asserted-by":"publisher","DOI":"10.1136\/hrt.55.5.428"},{"key":"e_1_2_1_14_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0022-0736(87)80090-0"}],"container-title":["Clinical Cardiology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1002%2Fclc.4960120510","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/clc.4960120510","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,10,22]],"date-time":"2023-10-22T11:57:39Z","timestamp":1697975859000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/clc.4960120510"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1989,5]]},"references-count":13,"journal-issue":{"issue":"5","published-print":{"date-parts":[[1989,5]]}},"alternative-id":["10.1002\/clc.4960120510"],"URL":"https:\/\/doi.org\/10.1002\/clc.4960120510","archive":["Portico"],"relation":{},"ISSN":["0160-9289","1932-8737"],"issn-type":[{"value":"0160-9289","type":"print"},{"value":"1932-8737","type":"electronic"}],"subject":[],"published":{"date-parts":[[1989,5]]}}}