Effects on QRS-waveforms and ST-T-segment by changes in body position during continuous 12-lead ECG: a preliminary report

Author

Jernberg, T. ; Lindahl, B. ; Högberg, M. ; Wallentin, L.

Author_Institution

Dept. of Cardiology, Uppsala Univ., Sweden

fYear

1997

fDate

7-10 Sep 1997

Firstpage

461

Lastpage

464

Abstract

ST-segment monitoring by Holter or by continuous 12-lead ECG-monitoring have prognostic value in unstable angina and myocardial infarction. However, “pseudo-changes” due to changes in body position may cause problems during monitoring for indicators of silent ischemia. Therefore, ischemia-monitoring with continuous 12-lead ECG was performed in 36 clinically stable patients in different body positions. Using the ECG in supine position as reference, ST-segment changes were usually small but reached significant levels in some patients, especially in the left lateral decubital position. However these deviations of the ST-segment seemed to arise under certain circumstances, which are possible to recognize in the clinical setting

Keywords

biomechanics; electrocardiography; medical signal processing; patient monitoring; Holter monitoring; QRS-waveforms; ST-T-segment; body position changes; body positions; clinically stable patients; continuous 12-lead ECG; left lateral decubital position; myocardial infarction; prognostic value; unstable angina; Cardiology; Data analysis; Electrocardiography; Ischemic pain; Myocardium; Pathology; Patient monitoring;

fLanguage

English

Publisher

ieee

Conference_Titel

Computers in Cardiology 1997

Conference_Location

Lund

ISSN

0276-6547

Print_ISBN

0-7803-4445-6

Type

conf

DOI

10.1109/CIC.1997.647934

Filename

647934