Comparison of usefulness of computer assisted continuous 48-h 3-lead with 12-lead ECG ischaemia monitoring for detection and quantitation of ischaemia in patients with unstable angina
Aims The selection of ECG leads used for ST monitoring may influence detection and quantitation of ischaemia. Methods We compared on-line continuous 48-h 12-lead against 3-lead ST monitoring in 130 unstable angina patients (Mortara, ELI-100). Onset and offset of ST episodes were defined by the lead...
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Published in | European heart journal Vol. 18; no. 6; pp. 931 - 940 |
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Main Authors | , , , , , , |
Format | Journal Article |
Language | English |
Published |
Oxford
Oxford University Press
01.06.1997
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Subjects | |
Online Access | Get full text |
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Summary: | Aims The selection of ECG leads used for ST monitoring may influence detection and quantitation of ischaemia. Methods We compared on-line continuous 48-h 12-lead against 3-lead ST monitoring in 130 unstable angina patients (Mortara, ELI-100). Onset and offset of ST episodes were defined by the lead with the first ≥100 μV ST change relative to baseline and the lead with the latest return to baseline ST level, respectively. ST episodes were calculated for 12 leads and 3 leads (V2, V5, III) separately. Results ST episodes were detected in 88 patients (77%) by 12-lead and in 71 patients (62%) by 3-lead ST monitoring (P<0·02). The median number (25, 75%) of episodes/patient was 1 (0, 3) for 3-lead and 2 (1, 6) for 12-lead (p<0·0001). The total duration of ischaemia detected during 12-lead far exceeded 3-lead monitoring: 12·3 (1, 58·2) and 1·7 (0, 23·3) min respectively (p<0·0001). The probability of recurrent ischaemia declined most during the first 24 h of monitoring. After a period without ST changes of 1, 12, 24 and 36 h, the probabilities of recurrent ischaemia were 63, 31, 14 and 9%, respectively. Conclusions Continuous 12-lead ST monitoring increases detection rate and duration of ST episodes compared to 3-lead ST monitoring. The use of continuous 12-lead ECG monitoring devices on emergency wards and coronary care units is recommended. |
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Bibliography: | istex:A1A1E4D6F87883E3A55EF05B9273F15DB21D0B2D ark:/67375/HXZ-C36GCWVB-S Correspondence: A. P. J. Klootwijk MD, Thoraxcenter Ba 316, Erasmus University Rotterdam, University Hospital Dijkzigt, P.O. Box 1738, 3000 DR Rotterdam, The Netherlands ArticleID:18.6.931 ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
ISSN: | 0195-668X 1522-9645 |
DOI: | 10.1093/oxfordjournals.eurheartj.a015381 |