{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,23]],"date-time":"2026-01-23T19:29:50Z","timestamp":1769196590245,"version":"3.49.0"},"reference-count":32,"publisher":"Elsevier BV","issue":"4","license":[{"start":{"date-parts":[[2001,4,1]],"date-time":"2001-04-01T00:00:00Z","timestamp":986083200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["American Heart Journal"],"published-print":{"date-parts":[[2001,4]]},"DOI":"10.1067\/mhj.2001.113390","type":"journal-article","created":{"date-parts":[[2002,10,9]],"date-time":"2002-10-09T21:24:11Z","timestamp":1034198651000},"page":"573-579","source":"Crossref","is-referenced-by-count":21,"title":["The absence of high-frequency QRS changes in the presence of standard electrocardiographic QRS changes of old myocardial infarction"],"prefix":"10.1067","volume":"141","author":[{"given":"Michael","family":"Ringborn","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Olle","family":"Pahlm","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Galen S.","family":"Wagner","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Stafford G.","family":"Warren","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jonas","family":"Pettersson","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"78","reference":[{"key":"10.1067\/mhj.2001.113390_bib1","doi-asserted-by":"crossref","first-page":"746","DOI":"10.1016\/0002-8703(61)90661-5","article-title":"Highfrequency components in the electrocardiograms of normal subjects and of patients with coronary heart disease","volume":"62","author":"Langner","year":"1961","journal-title":"Am Heart J"},{"key":"10.1067\/mhj.2001.113390_bib2","doi-asserted-by":"crossref","first-page":"195","DOI":"10.1161\/01.CIR.35.1.195","article-title":"High-frequency components in the electrocardiogram: a comparative study of normals and patients with myocardial disease","volume":"35","author":"Reynolds","year":"1967","journal-title":"Circulation"},{"key":"10.1067\/mhj.2001.113390_bib3","doi-asserted-by":"crossref","first-page":"531","DOI":"10.1161\/01.CIR.39.4.531","article-title":"The anatomic basis for high-frequency components in the electrocardiogram","volume":"39","author":"Flowers","year":"1969","journal-title":"Circulation"},{"key":"10.1067\/mhj.2001.113390_bib4","doi-asserted-by":"crossref","first-page":"927","DOI":"10.1161\/01.CIR.40.6.927","article-title":"Localization of the site of myocardial scarring in man by high-frequency components","volume":"40","author":"Flowers","year":"1969","journal-title":"Circulation"},{"key":"10.1067\/mhj.2001.113390_bib5","doi-asserted-by":"crossref","first-page":"349","DOI":"10.1016\/0002-8703(75)90085-X","article-title":"The high-frequency electrocardiogram in coronary artery disease","volume":"89","author":"Anderson","year":"1975","journal-title":"Am Heart J"},{"key":"10.1067\/mhj.2001.113390_bib6","doi-asserted-by":"crossref","first-page":"34","DOI":"10.1161\/01.CIR.64.1.34","article-title":"Effect of myocardial infarction on high-frequency QRS potentials","volume":"64","author":"Goldberger","year":"1981","journal-title":"Circulation"},{"key":"10.1067\/mhj.2001.113390_bib7","doi-asserted-by":"crossref","first-page":"367","DOI":"10.1016\/S0022-0736(80)80089-6","article-title":"Effect of myocardial infarction on the peak amplitude of high frequency QRS potentials","volume":"13","author":"Goldberger","year":"1980","journal-title":"J Electrocardiol"},{"key":"10.1067\/mhj.2001.113390_bib8","doi-asserted-by":"crossref","first-page":"57","DOI":"10.1016\/S0022-0736(81)80029-5","article-title":"Myocardial infarction diminishes both low and high frequency QRS potentials: power spectrum analysis of lead II","volume":"14","author":"Bhargava","year":"1981","journal-title":"J Electrocardiol"},{"key":"10.1067\/mhj.2001.113390_bib9","doi-asserted-by":"crossref","first-page":"60","DOI":"10.1093\/cvr\/23.1.60","article-title":"Clinical significance of high frequency QRS potentials in myocardial infarction: analysis based on power spectrum of lead III","volume":"23","author":"Talwar","year":"1989","journal-title":"Cardiovasc Res"},{"key":"10.1067\/mhj.2001.113390_bib10","doi-asserted-by":"crossref","first-page":"147","DOI":"10.1016\/0167-5273(93)90084-T","article-title":"Analysis of high frequency QRS potentials observed during acute myocardial infarction","volume":"42","author":"Berkalp","year":"1993","journal-title":"Int J Cardiol"},{"key":"10.1067\/mhj.2001.113390_bib11","doi-asserted-by":"crossref","first-page":"49","DOI":"10.1016\/S0022-0736(05)80110-4","article-title":"Time-frequency mapping of the QRS complex in normal subjects and in postmyocardial infarction patients","volume":"27","author":"Novak","year":"1994","journal-title":"J Electrocardiol"},{"key":"10.1067\/mhj.2001.113390_bib12","doi-asserted-by":"crossref","first-page":"285","DOI":"10.1016\/0167-5273(90)90084-I","article-title":"A spectral analysis of the high frequency QRS potentials observed during acute myocardial ischemia in dogs","volume":"26","author":"Abboud","year":"1990","journal-title":"Int J Cardiol"},{"key":"10.1067\/mhj.2001.113390_bib13","doi-asserted-by":"crossref","first-page":"237","DOI":"10.1161\/01.CIR.76.1.237","article-title":"Effects of coronary occlusion on high-frequency content of the epicardial electrogram and body surface electrocardiogram","volume":"76","author":"Mor-Avi","year":"1987","journal-title":"Circulation"},{"key":"10.1067\/mhj.2001.113390_bib14","doi-asserted-by":"crossref","first-page":"371","DOI":"10.1016\/S0022-0736(86)81065-2","article-title":"High frequency electrocardiography using an advanced method of signal averaging for non-invasive detection of coronary artery disease in patients with normal conventional electrocardiogram","volume":"19","author":"Abboud","year":"1986","journal-title":"J Electrocardiol"},{"key":"10.1067\/mhj.2001.113390_bib15","doi-asserted-by":"crossref","first-page":"585","DOI":"10.1161\/01.CIR.76.3.585","article-title":"Detection of transient myocardial ischemia by computer analysis of standard and signal-averaged high-frequency electrocardiograms in patients undergoing percutaneous transluminal coronary angioplasty","volume":"76","author":"Abboud","year":"1987","journal-title":"Circulation"},{"key":"10.1067\/mhj.2001.113390_bib16","doi-asserted-by":"crossref","first-page":"311","DOI":"10.1016\/0033-0620(93)90009-3","article-title":"High-frequency electrocardiogram analysis of the entire QRS in the diagnosis and assessment of coronary artery disease","volume":"35","author":"Abboud","year":"1993","journal-title":"Prog Cardiovasc Dis"},{"key":"10.1067\/mhj.2001.113390_bib17","doi-asserted-by":"crossref","first-page":"179","DOI":"10.1046\/j.1365-2281.1998.00091.x","article-title":"Electrocardiographic changes during prolonged coronary artery occlusion in man: comparison of standard and high-frequency recordings","volume":"18","author":"Pettersson","year":"1998","journal-title":"Clin Physiol"},{"key":"10.1067\/mhj.2001.113390_bib18","doi-asserted-by":"crossref","first-page":"175","DOI":"10.1002\/clc.4960170407","article-title":"High frequency QRS electrocardiography in the detection of reperfusion following thrombolytic therapy","volume":"17","author":"Aversano","year":"1994","journal-title":"Clin Cardiol"},{"key":"10.1067\/mhj.2001.113390_bib19","series-title":"High frequency ECG during reperfusion therapy of acute myocardial infarction","author":"Abboud","year":"1990"},{"key":"10.1067\/mhj.2001.113390_bib20","doi-asserted-by":"crossref","first-page":"565","DOI":"10.1161\/01.CIR.75.3.565","article-title":"Improved sex-specific criteria of left ventricular hypertrophy for clinical and computer interpretation of electrocardiograms: validation with autopsy findings","volume":"75","author":"Casale","year":"1987","journal-title":"Circulation"},{"key":"10.1067\/mhj.2001.113390_bib21","doi-asserted-by":"crossref","first-page":"161","DOI":"10.1016\/0002-8703(49)90562-1","article-title":"The ventricular complex in left ventricular hypertrophy as obtained by unipolar precordial and limb leads","volume":"37","author":"Sokolow","year":"1949","journal-title":"Am Heart J"},{"key":"10.1067\/mhj.2001.113390_bib22","first-page":"134","article-title":"Left ventricular hypertrophy impairs detection of myocardial infarction in patients with nonischemic cardiomyopathy","volume":"58","author":"Melvin","year":"1997","journal-title":"N C Med J"},{"key":"10.1067\/mhj.2001.113390_bib23","doi-asserted-by":"crossref","first-page":"1877","DOI":"10.1001\/archinte.1985.00360100147024","article-title":"The Selvester QRS scoring system for estimating myocardial infarct size: the development and application of the system","volume":"145","author":"Selvester","year":"1985","journal-title":"Arch Intern Med"},{"key":"10.1067\/mhj.2001.113390_bib24","doi-asserted-by":"crossref","first-page":"729","DOI":"10.1016\/0002-9149(88)91056-9","article-title":"Evaluation of a QRS scoring system for estimating myocardial infarct size, VI: identification of screening criteria for non-acute myocardial infarcts","volume":"61","author":"Anderson","year":"1988","journal-title":"Am J Cardiol"},{"key":"10.1067\/mhj.2001.113390_bib25","first-page":"31","article-title":"Quantitation of myocardial infarct size and location by electrocardiogram and vectorcardiogram","author":"Selvester","year":"1972"},{"key":"10.1067\/mhj.2001.113390_bib26","first-page":"63","article-title":"Quantitative analysis of SPECT myocardial perfusion","author":"Van Train","year":"1995"},{"key":"10.1067\/mhj.2001.113390_bib27","doi-asserted-by":"crossref","first-page":"196","DOI":"10.1016\/0002-8703(66)90182-7","article-title":"A new system of multiple-lead exercise electrocardiography","volume":"71","author":"Mason","year":"1966","journal-title":"Am Heart J"},{"key":"10.1067\/mhj.2001.113390_bib28","doi-asserted-by":"crossref","first-page":"158","DOI":"10.1109\/TBME.1987.326040","article-title":"Data processing of exercise ECGs","volume":"34","author":"Pahlm","year":"1987","journal-title":"IEEE Trans Biomed Eng"},{"key":"10.1067\/mhj.2001.113390_bib29","series-title":"Digital signal processing\u2014principles, algorithms, and applications","author":"Proakis","year":"1996"},{"key":"10.1067\/mhj.2001.113390_bib30","series-title":"Determination of QRS onset and end in orthogonal and scalar ECGs: a new approach","author":"Jonson","year":"1984"},{"issue":"Suppl","key":"10.1067\/mhj.2001.113390_bib31","doi-asserted-by":"crossref","first-page":"239","DOI":"10.1016\/S0022-0736(95)80065-4","article-title":"Analysis of high-frequency signalaveraged ECG measurements","volume":"28","author":"Xue","year":"1995","journal-title":"J Electrocardiol"},{"key":"10.1067\/mhj.2001.113390_bib32","doi-asserted-by":"crossref","first-page":"1751","DOI":"10.1161\/01.RES.68.6.1751","article-title":"Simulation of high-resolution QRS complex using a ventricular model with a fractal conduction system: effects of ischemia on high-frequency QRS potentials","volume":"68","author":"Abboud","year":"1991","journal-title":"Circ Res"}],"container-title":["American Heart Journal"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0002870301520888?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0002870301520888?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2019,5,9]],"date-time":"2019-05-09T10:24:34Z","timestamp":1557397474000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/S0002870301520888"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2001,4]]},"references-count":32,"journal-issue":{"issue":"4","published-print":{"date-parts":[[2001,4]]}},"alternative-id":["S0002870301520888"],"URL":"https:\/\/doi.org\/10.1067\/mhj.2001.113390","relation":{},"ISSN":["0002-8703"],"issn-type":[{"value":"0002-8703","type":"print"}],"subject":[],"published":{"date-parts":[[2001,4]]}}}