Portable-Type Signal-Averaged Electrocardiography With Dipyridamole to Detect Patients With Coronary Artery Disease: A Prospective Study

Portable-Type Signal-Averaged Electrocardiography With Dipyridamole to Detect Patients With Coronary Artery Disease: A Prospective Study

Background In a retrospective study portable-type signal-averaged electrocardiography (SAECG) with dipyridamole stress was found to identify patients with coronary artery disease (CAD) at their bedside with high sensitivity and specificity, so the utility of this method was prospectively investigate...

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Veröffentlicht in:Circulation Journal 2006, Vol.70(12), pp.1568-1573
Hauptverfasser: Otsubo, Hitoshi, Yoshida, Teruhisa, Hiraki, Tatsuro, Inage, Tomohito, Matsumoto, Manabu, Imaizumi, Tsutomu
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Sprache:eng
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Dipyridamole stress
Filtered QRS duration
Myocardial ischemia
Non-invasive test
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container_end_page 1573
container_issue 12
container_start_page 1568
container_title Circulation Journal
container_volume 70
creator Otsubo, Hitoshi
Yoshida, Teruhisa
Hiraki, Tatsuro
Inage, Tomohito
Matsumoto, Manabu
Imaizumi, Tsutomu
description Background In a retrospective study portable-type signal-averaged electrocardiography (SAECG) with dipyridamole stress was found to identify patients with coronary artery disease (CAD) at their bedside with high sensitivity and specificity, so the utility of this method was prospectively investigated in the present study. Methods and Results Standard 12-lead QRS wave SAECG was performed before and after dipyridamole stress at the bedside in 71 patients with chest pain (43 males, mean age 63 ±9 years). The filtered QRS duration (fQRSd) before and after dipyridamole stress was determined by multiphasic oscillation method for each of the standard 12 leads, and the maximal value of changes in fQRSd (MAX ΔfQRSd) among the 12 leads was determined. The positive test was defined as MAX ΔfQRSd ≥5 ms, and negative as MAX ΔfQRSd
doi_str_mv 10.1253/circj.70.1568
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Methods and Results Standard 12-lead QRS wave SAECG was performed before and after dipyridamole stress at the bedside in 71 patients with chest pain (43 males, mean age 63 ±9 years). The filtered QRS duration (fQRSd) before and after dipyridamole stress was determined by multiphasic oscillation method for each of the standard 12 leads, and the maximal value of changes in fQRSd (MAX ΔfQRSd) among the 12 leads was determined. The positive test was defined as MAX ΔfQRSd ≥5 ms, and negative as MAX ΔfQRSd &lt;5 ms based on the previous study. Selective coronary arteriography was performed next. In the positive group (n=31), 25 patients had significant stenosis of the coronary artery and 6 did not. In the negative group (n=40), 5 patients had significant stenosis and 35 did not. The sensitivity, specificity, positive predictive accuracy and negative predictive accuracy for CAD detection by SAECG was 83%, 85%, 81% and 88%, respectively. Conclusions Dipyridamole-stress portable SAECG is useful for detecting CAD at the patient's bedside with high sensitivity and specificity. (Circ J 2006; 70: 1568 - 1573)</description><identifier>ISSN: 1346-9843</identifier><identifier>EISSN: 1347-4820</identifier><identifier>DOI: 10.1253/circj.70.1568</identifier><language>eng</language><publisher>The Japanese Circulation Society</publisher><subject>Dipyridamole stress ; Filtered QRS duration ; Myocardial ischemia ; Non-invasive test</subject><ispartof>Circulation Journal, 2006, Vol.70(12), pp.1568-1573</ispartof><rights>2006 THE JAPANESE CIRCULATION SOCIETY</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c427t-8c5564af5302619f1ffd2346bd0d0bc784b35f2af339dd4922e948167ce891ef3</citedby><cites>FETCH-LOGICAL-c427t-8c5564af5302619f1ffd2346bd0d0bc784b35f2af339dd4922e948167ce891ef3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,1883,4024,27923,27924,27925</link.rule.ids></links><search><creatorcontrib>Otsubo, Hitoshi</creatorcontrib><creatorcontrib>Yoshida, Teruhisa</creatorcontrib><creatorcontrib>Hiraki, Tatsuro</creatorcontrib><creatorcontrib>Inage, Tomohito</creatorcontrib><creatorcontrib>Matsumoto, Manabu</creatorcontrib><creatorcontrib>Imaizumi, Tsutomu</creatorcontrib><title>Portable-Type Signal-Averaged Electrocardiography With Dipyridamole to Detect Patients With Coronary Artery Disease: A Prospective Study</title><title>Circulation Journal</title><description>Background In a retrospective study portable-type signal-averaged electrocardiography (SAECG) with dipyridamole stress was found to identify patients with coronary artery disease (CAD) at their bedside with high sensitivity and specificity, so the utility of this method was prospectively investigated in the present study. Methods and Results Standard 12-lead QRS wave SAECG was performed before and after dipyridamole stress at the bedside in 71 patients with chest pain (43 males, mean age 63 ±9 years). The filtered QRS duration (fQRSd) before and after dipyridamole stress was determined by multiphasic oscillation method for each of the standard 12 leads, and the maximal value of changes in fQRSd (MAX ΔfQRSd) among the 12 leads was determined. The positive test was defined as MAX ΔfQRSd ≥5 ms, and negative as MAX ΔfQRSd &lt;5 ms based on the previous study. Selective coronary arteriography was performed next. In the positive group (n=31), 25 patients had significant stenosis of the coronary artery and 6 did not. In the negative group (n=40), 5 patients had significant stenosis and 35 did not. The sensitivity, specificity, positive predictive accuracy and negative predictive accuracy for CAD detection by SAECG was 83%, 85%, 81% and 88%, respectively. Conclusions Dipyridamole-stress portable SAECG is useful for detecting CAD at the patient's bedside with high sensitivity and specificity. 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Methods and Results Standard 12-lead QRS wave SAECG was performed before and after dipyridamole stress at the bedside in 71 patients with chest pain (43 males, mean age 63 ±9 years). The filtered QRS duration (fQRSd) before and after dipyridamole stress was determined by multiphasic oscillation method for each of the standard 12 leads, and the maximal value of changes in fQRSd (MAX ΔfQRSd) among the 12 leads was determined. The positive test was defined as MAX ΔfQRSd ≥5 ms, and negative as MAX ΔfQRSd &lt;5 ms based on the previous study. Selective coronary arteriography was performed next. In the positive group (n=31), 25 patients had significant stenosis of the coronary artery and 6 did not. In the negative group (n=40), 5 patients had significant stenosis and 35 did not. The sensitivity, specificity, positive predictive accuracy and negative predictive accuracy for CAD detection by SAECG was 83%, 85%, 81% and 88%, respectively. Conclusions Dipyridamole-stress portable SAECG is useful for detecting CAD at the patient's bedside with high sensitivity and specificity. (Circ J 2006; 70: 1568 - 1573)</abstract><pub>The Japanese Circulation Society</pub><doi>10.1253/circj.70.1568</doi><tpages>6</tpages><oa>free_for_read</oa></addata></record>
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subjects Dipyridamole stress
Filtered QRS duration
Myocardial ischemia
Non-invasive test
title Portable-Type Signal-Averaged Electrocardiography With Dipyridamole to Detect Patients With Coronary Artery Disease: A Prospective Study
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