{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,9,4]],"date-time":"2025-09-04T13:16:01Z","timestamp":1756991761575},"reference-count":0,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"6","content-domain":{"domain":["www.ahajournals.org"],"crossmark-restriction":true},"short-container-title":["Circulation"],"published-print":{"date-parts":[[1978,6]]},"abstract":"<jats:p>In 58 patients with uncomplicated acute anterior myocardial infarction, a mean decline in the sum of ST segments (sigmaST) of 34% was observed when comparing sigmaST values recorded at 3-6 hours with those recorded at 6-9 hours after the onset of symptoms (P less than 0.05). The mean absolute difference between 19 paired readings 1-2 hours apart was 2.9 +\/- 3.0 mm and between 29 readings 2-4 hours apart 3.0 +\/- 3.0 mm. However, the mean absolute difference between 38 paired readings 4-8 hours apart was 12.2 +\/- 11.8 mm with a wide range of differences. Left ventricular failure and pericarditis were also associated with significantly higher sigmaST values. We conclude that there is a complex relationship between ST-segment elevation and a number of clinical factors during the first 48 hours after infarction. Nevertheless, precordial mapping remains a useful method for the evaluation of short-term (less than 4 hours) therapeutic interventions, if other relevant variables are unaltered and if carefully matched control groups are employed.<\/jats:p>","DOI":"10.1161\/01.cir.57.6.1096","type":"journal-article","created":{"date-parts":[[2012,6,11]],"date-time":"2012-06-11T23:57:40Z","timestamp":1339459060000},"page":"1096-1103","update-policy":"http:\/\/dx.doi.org\/10.1161\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":12,"title":["Variability, reproducibility, and applications of precordial ST-segment mapping following acute myocardial infarction."],"prefix":"10.1161","volume":"57","author":[{"given":"T","family":"Hardarson","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"H","family":"Henning","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"R A","family":"O'Rourke","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"J S","family":"Karliner","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"W","family":"Ryan","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"suffix":"Jr","given":"J","family":"Ross","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"276","container-title":["Circulation"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.ahajournals.org\/doi\/pdf\/10.1161\/01.CIR.57.6.1096","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2024,5,12]],"date-time":"2024-05-12T15:07:30Z","timestamp":1715526450000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.ahajournals.org\/doi\/10.1161\/01.CIR.57.6.1096"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1978,6]]},"references-count":0,"journal-issue":{"issue":"6","published-print":{"date-parts":[[1978,6]]}},"alternative-id":["10.1161\/01.CIR.57.6.1096"],"URL":"https:\/\/doi.org\/10.1161\/01.cir.57.6.1096","relation":{},"ISSN":["0009-7322","1524-4539"],"issn-type":[{"value":"0009-7322","type":"print"},{"value":"1524-4539","type":"electronic"}],"subject":[],"published":{"date-parts":[[1978,6]]},"assertion":[{"value":"1978-06-01","order":2,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}