Using Noninvasive 18-Lead Ecg to Differentiate between Right and Left Circumflex Coronary Artery Occlusion

2.50
Hdl Handle:
http://hdl.handle.net/10755/159485
Type:
Presentation
Title:
Using Noninvasive 18-Lead Ecg to Differentiate between Right and Left Circumflex Coronary Artery Occlusion
Abstract:
Using Noninvasive 18-Lead Ecg to Differentiate between Right and Left Circumflex Coronary Artery Occlusion
Conference Sponsor:Midwest Nursing Research Society
Conference Year:2002
Author:Wung, Shu-Fen, PhD
P.I. Institution Name:University of Arizona
Title:Associate Professor
Contact Address:College of Nursing, PO Box 210203, Tucson, AZ, 85721-0203, USA
Contact Telephone:520.626.4305
Expensive technologies, such as perfusion scanning, have been used to differentiate occlusion of right (RCA) and left circumflex (LC) coronary artery. It is unknown if the noninvasive 18-lead ECG can be useful for identifying the coronary occlusion sites. Methods: Continuous 18-lead ECG recordings from 70 patients without acute or prior MI undergoing coronary angioplasty in the RCA (n=32) or LC (n=38) were analyzed using computer-assisted ST analysis. The ST changes were calculated by subtracting maximal ST level during coronary occlusion from individual's baseline ECG. Result: During LC occlusion, significant higher frequency of ST segment depression in right ventricular leads V3R-5R of > 0.5 mm, ST segment elevation in the posterior leads V7-9 and ST segment elevation in lead V6 were observed. During RCA occlusion, significant higher frequency of ST elevation in the right ventricular leads V3-5R and ST depression in posterior leads V7-9. No statistical significant difference was observed in ST segment depression in precordial leads V1-3 between LC occlusion (61%) and RCA occlusion (41%). Conclusion: ST segment changes in the right ventricular and posterior can be useful in discriminating occlusion in the RCA versus LC coronary artery.
Repository Posting Date:
26-Oct-2011
Date of Publication:
17-Oct-2011
Sponsors:
Midwest Nursing Research Society

Full metadata record

DC FieldValue Language
dc.typePresentationen_GB
dc.titleUsing Noninvasive 18-Lead Ecg to Differentiate between Right and Left Circumflex Coronary Artery Occlusionen_GB
dc.identifier.urihttp://hdl.handle.net/10755/159485-
dc.description.abstract<table><tr><td colspan="2" class="item-title">Using Noninvasive 18-Lead Ecg to Differentiate between Right and Left Circumflex Coronary Artery Occlusion</td></tr><tr class="item-sponsor"><td class="label">Conference Sponsor:</td><td class="value">Midwest Nursing Research Society</td></tr><tr class="item-year"><td class="label">Conference Year:</td><td class="value">2002</td></tr><tr class="item-author"><td class="label">Author:</td><td class="value">Wung, Shu-Fen, PhD</td></tr><tr class="item-institute"><td class="label">P.I. Institution Name:</td><td class="value">University of Arizona</td></tr><tr class="item-author-title"><td class="label">Title:</td><td class="value">Associate Professor</td></tr><tr class="item-address"><td class="label">Contact Address:</td><td class="value">College of Nursing, PO Box 210203, Tucson, AZ, 85721-0203, USA</td></tr><tr class="item-phone"><td class="label">Contact Telephone:</td><td class="value">520.626.4305</td></tr><tr class="item-email"><td class="label">Email:</td><td class="value">shufen@uic.edu</td></tr><tr><td colspan="2" class="item-abstract">Expensive technologies, such as perfusion scanning, have been used to differentiate occlusion of right (RCA) and left circumflex (LC) coronary artery. It is unknown if the noninvasive 18-lead ECG can be useful for identifying the coronary occlusion sites. Methods: Continuous 18-lead ECG recordings from 70 patients without acute or prior MI undergoing coronary angioplasty in the RCA (n=32) or LC (n=38) were analyzed using computer-assisted ST analysis. The ST changes were calculated by subtracting maximal ST level during coronary occlusion from individual's baseline ECG. Result: During LC occlusion, significant higher frequency of ST segment depression in right ventricular leads V3R-5R of &gt; 0.5 mm, ST segment elevation in the posterior leads V7-9 and ST segment elevation in lead V6 were observed. During RCA occlusion, significant higher frequency of ST elevation in the right ventricular leads V3-5R and ST depression in posterior leads V7-9. No statistical significant difference was observed in ST segment depression in precordial leads V1-3 between LC occlusion (61%) and RCA occlusion (41%). Conclusion: ST segment changes in the right ventricular and posterior can be useful in discriminating occlusion in the RCA versus LC coronary artery. </td></tr></table>en_GB
dc.date.available2011-10-26T22:03:35Z-
dc.date.issued2011-10-17en_GB
dc.date.accessioned2011-10-26T22:03:35Z-
dc.description.sponsorshipMidwest Nursing Research Societyen_GB
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