Significance of changes in R wave amplitude during treadmill stress testing: Angiographic correlation
Coronary angiograms and treadmill stress tests were reviewed in 89 patients. Changes in R wave amplitude were measured in the control and immediate postexercise periods. Of 45 patients with normal coronary arteries, 41 (91 percent) had a decrease in R wave amplitude ( P < 0.01); 3 (7 percent) had...
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| Veröffentlicht in: | The American journal of cardiology 1978-05, Vol.41 (5), p.846-851 |
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| container_title | The American journal of cardiology |
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| creator | Bonoris, Peter E. Greenberg, Paul S. Castellanet, Mark J. Ellestad, Myrvin H. |
| description | Coronary angiograms and treadmill stress tests were reviewed in 89 patients. Changes in R wave amplitude were measured in the control and immediate postexercise periods. Of 45 patients with normal coronary arteries, 41 (91 percent) had a decrease in R wave amplitude (
P < 0.01); 3 (7 percent) had an increase in amplitude, including 2 with abnormal left ventriculograms. The remaining patient (2 percent) had abnormal wall motion but no change in R wave amplitude.
Among the 44 patients with significant coronary artery disease (70 percent or greater luminal narrowing in one or more vessels), R wave amplitude increased after exercise in 26 (59 percent) with more severe coronary artery disease. R wave amplitude decreased in 18 patients (41 percent) with normal or minimally abnormal resting ventriculograms and less severe coronary artery disease (
P < 0.01).
Changes in R wave amplitude reflect ventricular function, an increase in R wave amplitude reflecting more severe dysfunction and severe coronary narrowing. A decreased R wave amplitude indicates normal or minimal dysfunction and is strongly associated with normal coronary angiograms. |
| doi_str_mv | 10.1016/0002-9149(78)90723-3 |
| format | Article |
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P < 0.01); 3 (7 percent) had an increase in amplitude, including 2 with abnormal left ventriculograms. The remaining patient (2 percent) had abnormal wall motion but no change in R wave amplitude.
Among the 44 patients with significant coronary artery disease (70 percent or greater luminal narrowing in one or more vessels), R wave amplitude increased after exercise in 26 (59 percent) with more severe coronary artery disease. R wave amplitude decreased in 18 patients (41 percent) with normal or minimally abnormal resting ventriculograms and less severe coronary artery disease (
P < 0.01).
Changes in R wave amplitude reflect ventricular function, an increase in R wave amplitude reflecting more severe dysfunction and severe coronary narrowing. A decreased R wave amplitude indicates normal or minimal dysfunction and is strongly associated with normal coronary angiograms.</description><identifier>ISSN: 0002-9149</identifier><identifier>EISSN: 1879-1913</identifier><identifier>DOI: 10.1016/0002-9149(78)90723-3</identifier><identifier>PMID: 645592</identifier><language>eng</language><publisher>United States: Elsevier Inc</publisher><subject>Adult ; Aged ; Coronary Angiography ; Coronary Disease - diagnosis ; Coronary Disease - diagnostic imaging ; Coronary Disease - physiopathology ; Electrocardiography ; Exercise Test ; Female ; Heart Conduction System - physiopathology ; Heart Ventricles - physiopathology ; Humans ; Male ; Middle Aged ; Retrospective Studies</subject><ispartof>The American journal of cardiology, 1978-05, Vol.41 (5), p.846-851</ispartof><rights>1978</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c422t-f59cd8b54a6eb078a5ec9feeb6ecaf4691f918f4cda2293890d72ba5379cc4f63</citedby><cites>FETCH-LOGICAL-c422t-f59cd8b54a6eb078a5ec9feeb6ecaf4691f918f4cda2293890d72ba5379cc4f63</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/0002-9149(78)90723-3$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/645592$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Bonoris, Peter E.</creatorcontrib><creatorcontrib>Greenberg, Paul S.</creatorcontrib><creatorcontrib>Castellanet, Mark J.</creatorcontrib><creatorcontrib>Ellestad, Myrvin H.</creatorcontrib><title>Significance of changes in R wave amplitude during treadmill stress testing: Angiographic correlation</title><title>The American journal of cardiology</title><addtitle>Am J Cardiol</addtitle><description>Coronary angiograms and treadmill stress tests were reviewed in 89 patients. Changes in R wave amplitude were measured in the control and immediate postexercise periods. Of 45 patients with normal coronary arteries, 41 (91 percent) had a decrease in R wave amplitude (
P < 0.01); 3 (7 percent) had an increase in amplitude, including 2 with abnormal left ventriculograms. The remaining patient (2 percent) had abnormal wall motion but no change in R wave amplitude.
Among the 44 patients with significant coronary artery disease (70 percent or greater luminal narrowing in one or more vessels), R wave amplitude increased after exercise in 26 (59 percent) with more severe coronary artery disease. R wave amplitude decreased in 18 patients (41 percent) with normal or minimally abnormal resting ventriculograms and less severe coronary artery disease (
P < 0.01).
Changes in R wave amplitude reflect ventricular function, an increase in R wave amplitude reflecting more severe dysfunction and severe coronary narrowing. A decreased R wave amplitude indicates normal or minimal dysfunction and is strongly associated with normal coronary angiograms.</description><subject>Adult</subject><subject>Aged</subject><subject>Coronary Angiography</subject><subject>Coronary Disease - diagnosis</subject><subject>Coronary Disease - diagnostic imaging</subject><subject>Coronary Disease - physiopathology</subject><subject>Electrocardiography</subject><subject>Exercise Test</subject><subject>Female</subject><subject>Heart Conduction System - physiopathology</subject><subject>Heart Ventricles - physiopathology</subject><subject>Humans</subject><subject>Male</subject><subject>Middle Aged</subject><subject>Retrospective Studies</subject><issn>0002-9149</issn><issn>1879-1913</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1978</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNp9kElLBDEQhYO4jcs_8JCT6KE1SaeXeBAGcYMBweUc0kmljfQyJt0j_nsz9uDRU1XxXj2qPoROKLmghOaXhBCWCMrFWVGeC1KwNEm30IyWhUiooOk2mv1Z9tFBCB9xpDTL99BuzrNMsBmCF1d3zjqtOg24t1i_q66GgF2Hn_GXWgFW7bJxw2gAm9G7rsaDB2Va1zQ4xDYEPEAYonCF513t-tqr5bvTWPfeQ6MG13dHaMeqJsDxph6it7vb15uHZPF0_3gzXySaMzYkNhPalFXGVQ4VKUqVgRYWoMpBK8tzQa2gpeXaKMZEWgpiClapLC2E1tzm6SE6nXKXvv8c41WydUFD06gO-jHIIhUs_s2jkU9G7fsQPFi59K5V_ltSItdw5ZqcXJOTRSl_4co0rp1s8seqBfO3NNGM8vUkQ_xx5cDLoB1EsMZ50IM0vfs__we6nYr8</recordid><startdate>19780501</startdate><enddate>19780501</enddate><creator>Bonoris, Peter E.</creator><creator>Greenberg, Paul S.</creator><creator>Castellanet, Mark J.</creator><creator>Ellestad, Myrvin H.</creator><general>Elsevier Inc</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>19780501</creationdate><title>Significance of changes in R wave amplitude during treadmill stress testing: Angiographic correlation</title><author>Bonoris, Peter E. ; Greenberg, Paul S. ; Castellanet, Mark J. ; Ellestad, Myrvin H.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c422t-f59cd8b54a6eb078a5ec9feeb6ecaf4691f918f4cda2293890d72ba5379cc4f63</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1978</creationdate><topic>Adult</topic><topic>Aged</topic><topic>Coronary Angiography</topic><topic>Coronary Disease - diagnosis</topic><topic>Coronary Disease - diagnostic imaging</topic><topic>Coronary Disease - physiopathology</topic><topic>Electrocardiography</topic><topic>Exercise Test</topic><topic>Female</topic><topic>Heart Conduction System - physiopathology</topic><topic>Heart Ventricles - physiopathology</topic><topic>Humans</topic><topic>Male</topic><topic>Middle Aged</topic><topic>Retrospective Studies</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Bonoris, Peter E.</creatorcontrib><creatorcontrib>Greenberg, Paul S.</creatorcontrib><creatorcontrib>Castellanet, Mark J.</creatorcontrib><creatorcontrib>Ellestad, Myrvin H.</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>The American journal of cardiology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Bonoris, Peter E.</au><au>Greenberg, Paul S.</au><au>Castellanet, Mark J.</au><au>Ellestad, Myrvin H.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Significance of changes in R wave amplitude during treadmill stress testing: Angiographic correlation</atitle><jtitle>The American journal of cardiology</jtitle><addtitle>Am J Cardiol</addtitle><date>1978-05-01</date><risdate>1978</risdate><volume>41</volume><issue>5</issue><spage>846</spage><epage>851</epage><pages>846-851</pages><issn>0002-9149</issn><eissn>1879-1913</eissn><abstract>Coronary angiograms and treadmill stress tests were reviewed in 89 patients. Changes in R wave amplitude were measured in the control and immediate postexercise periods. Of 45 patients with normal coronary arteries, 41 (91 percent) had a decrease in R wave amplitude (
P < 0.01); 3 (7 percent) had an increase in amplitude, including 2 with abnormal left ventriculograms. The remaining patient (2 percent) had abnormal wall motion but no change in R wave amplitude.
Among the 44 patients with significant coronary artery disease (70 percent or greater luminal narrowing in one or more vessels), R wave amplitude increased after exercise in 26 (59 percent) with more severe coronary artery disease. R wave amplitude decreased in 18 patients (41 percent) with normal or minimally abnormal resting ventriculograms and less severe coronary artery disease (
P < 0.01).
Changes in R wave amplitude reflect ventricular function, an increase in R wave amplitude reflecting more severe dysfunction and severe coronary narrowing. A decreased R wave amplitude indicates normal or minimal dysfunction and is strongly associated with normal coronary angiograms.</abstract><cop>United States</cop><pub>Elsevier Inc</pub><pmid>645592</pmid><doi>10.1016/0002-9149(78)90723-3</doi><tpages>6</tpages></addata></record> |
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| source | MEDLINE; Elsevier ScienceDirect Journals Complete |
| subjects | Adult Aged Coronary Angiography Coronary Disease - diagnosis Coronary Disease - diagnostic imaging Coronary Disease - physiopathology Electrocardiography Exercise Test Female Heart Conduction System - physiopathology Heart Ventricles - physiopathology Humans Male Middle Aged Retrospective Studies |
| title | Significance of changes in R wave amplitude during treadmill stress testing: Angiographic correlation |
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