2.50
Hdl Handle:
http://hdl.handle.net/10755/160506
Type:
Presentation
Title:
New ECG criteria for acute posterior myocardial ischemia
Abstract:
New ECG criteria for acute posterior myocardial ischemia
Conference Sponsor:Midwest Nursing Research Society
Conference Year:2001
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
Posterior leads provide limited additional diagnostic information to the standard 12-lead ECG when an ischemic criterion of 1mm ST elevation is used. However, no study is available to delineate the ischemic criteria in the posterior leads. Method. Continuous 15-lead ECGs (12+V7-9) were recorded in 53 subjects undergoing elective left circumflex (LCX) coronary angioplasty (posterior ischemia model). ST amplitudes at pre-angioplasty baseline were subtracted from maximal ST amplitudes during balloon occlusion (DST) for each of the 15 leads. Results. During LCX occlusions, 26 subjects (49%) exhibited DST elevation > 1mm and 24 subjects (45%) had DST elevation ranging from 0.5-0.95 mm in the posterior leads. Five subjects (9%) had DST elevation > 1 mm in posterior leads without DST elevation in any of the 12 leads. The sensitivity in detecting myocardial ischemia using 15-lead ECG (58%) was not statistically different from the standard 12-lead ECG (49%) (p=0.06). Adjusting the ischemic criterion from 1 to 0.5mm in V7-9 significantly improved the sensitive from 49% in 12-lead to 94% in 15-lead ECG (p=0.000). Conclusions. Posterior leads contribute significant additional diagnostic information above and beyond the 12-lead ECG only when new ischemic criterion of 0.5mm of ST elevation is applied to the posterior leads.
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.titleNew ECG criteria for acute posterior myocardial ischemiaen_GB
dc.identifier.urihttp://hdl.handle.net/10755/160506-
dc.description.abstract<table><tr><td colspan="2" class="item-title">New ECG criteria for acute posterior myocardial ischemia</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">2001</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">Posterior leads provide limited additional diagnostic information to the standard 12-lead ECG when an ischemic criterion of 1mm ST elevation is used. However, no study is available to delineate the ischemic criteria in the posterior leads. Method. Continuous 15-lead ECGs (12+V7-9) were recorded in 53 subjects undergoing elective left circumflex (LCX) coronary angioplasty (posterior ischemia model). ST amplitudes at pre-angioplasty baseline were subtracted from maximal ST amplitudes during balloon occlusion (DST) for each of the 15 leads. Results. During LCX occlusions, 26 subjects (49%) exhibited DST elevation &gt; 1mm and 24 subjects (45%) had DST elevation ranging from 0.5-0.95 mm in the posterior leads. Five subjects (9%) had DST elevation &gt; 1 mm in posterior leads without DST elevation in any of the 12 leads. The sensitivity in detecting myocardial ischemia using 15-lead ECG (58%) was not statistically different from the standard 12-lead ECG (49%) (p=0.06). Adjusting the ischemic criterion from 1 to 0.5mm in V7-9 significantly improved the sensitive from 49% in 12-lead to 94% in 15-lead ECG (p=0.000). Conclusions. Posterior leads contribute significant additional diagnostic information above and beyond the 12-lead ECG only when new ischemic criterion of 0.5mm of ST elevation is applied to the posterior leads.</td></tr></table>en_GB
dc.date.available2011-10-26T23:00:31Z-
dc.date.issued2011-10-17en_GB
dc.date.accessioned2011-10-26T23:00:31Z-
dc.description.sponsorshipMidwest Nursing Research Societyen_GB
All Items in this repository are protected by copyright, with all rights reserved, unless otherwise indicated.