Skip Navigation

European Heart Journal 1991 12(7):1176-1182;
Copyright © 1991 by the European Society of Cardiology.
This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrowRequest Permissions
Google Scholar
Right arrow Articles by PIESSENS, J.
Right arrow Articles by WILLEMS, J.
Right arrow Search for Related Content
PubMed
Right arrow Articles by PIESSENS, J.
Right arrow Articles by WILLEMS, J.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

© 1991 The European Society of Cardiology

The value of the intracoronary electrogram for the early detection of myocardial ischaemia during coronary angioplasty

J. PIESSENS, D. VROLIX, D. SIONIS, J. J. GLAZIER, H. DE GEEST and J. WILLEMS

From the Departments of Cardiology University Hospital Gasthuisberg Leuven, Belgium
*Medical Informalics, University Hospital Gasthuisberg Leuven, Belgium

Received 28 June 1990; revised 1 October 1990; .

Correspondence: Jan Piessens. MD, Department of Cardiology. University Hospital Gasthuisberg Herestraat 49, B-3000 Leuven, Belgium

Abstract

The clinical value of intracoronarv electrography for the detection ofmyocardial ischaemia was assessed during coronary angioplasty and compared to a standard technique of surface ECG monitoring. In 73 patients undergoing single lesion angioplasty, an iniracoronarv electrogram and four representative surface ECG leads were obtained. During angioplasty of the left anterior descending artery leads, I, V3 V5 V6 were recorded. For the circumflex artery leads I, a VL, a VF, V6 and for the right coronar artery leads II, III, a VF, V6 were monitored. Eight patients were excluded due to transient intraventricular conduction disturbances during balloon inflation; 65 patients remained for further analysis. Out of a total of 154 balloon inflations (35 in the circumflex, 71 in the left anterior descending and 48 in the right coronary artery), the percentage that produced a≥ mm ST segment elevation, the time to the appearance of a≥ mm ST segment elevation and the maximal ST segment elevation were recorded. During inflations in the circumflex artery, the respective values of these three parameters were 20%, 22·6±11·5 and 0·37±0·80 mm in V6 the most sensitive surface lead, versus 70% (P<0·001), 14·4±9·6 s (P<0·01 and 5·82±6·35 mm (P<0·0001) on the intracoronary electrogram. For left anterior descending inflations the corresponding values in V3 the most sensitive surface lead, were 61%, 26·2±13·2 s and 2·08±2·32mm versus 74% (NS), 18·3±12·4s (P<0·001) and 5 (P<0·0001) on the intracoronary tracing. For right coronary artery inflations the corresponding values in V3 the most sensitive surface lead, were 77%, 22·2±12·8 s and 2·31±1·65mm versus 32% (P<0·0001), 29·8±26·3 (NS) and 1·18±2·19mm (P<0·05 Keeping in mind that only four surface leads were monitored, these data suggest that intracoronary electrography is helpful for adequate nonitoring of ischaemia during circumflex angioplasty. During left anterior descending angioplasty it adds some additional information, but it appears superfluous during right coronary angioplasty.

Key Words: Coronary angioplasty • myocardial ischaemia • intracoronary electrography


Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?




Disclaimer:
Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.