Does body surface potential mapping (bspm) predict functional recovery in chronic ischemic myocardium after revascularization?

Author

Brans, H.J. ; Samol, A. ; Stolz, P. ; Schawe, T. ; Wenzelburger, F. ; Tjan, Td ; Scheld, Hh ; Breithardt, G. ; Wichter, T. ; Vahlhaus, C.

Author_Institution

Dept. of Cardiology & Angiology, Munster Univ.

fYear

2005

fDate

25-28 Sept. 2005

Firstpage

207

Lastpage

210

Abstract

Irreversibly dysfunctional myocardium is electrically characterized by decreased amplitudes and prolonged duration of local electrograms. We investigated whether ECGs from body surface correlate with epicardial electrograms. A 120-channel body surface potential mapping (BSPM) was performed in 24 patients before CABG. During CABG epicardial mapping was performed. For all BSPM leads the Q-amplitude and QR-duration were measured and correlated to epicardial electrogram characteristics. Q-wave-amplitude neighboring the area over the left scapula correlated well with epicardial amplitudes in scarred LAD. QR-duration caudal to V5,V6 correlated well with epicardial signal duration in scarred CxA, Q-amplitude in paramedian epigastric region correlated with epicardial amplitudes in scarred RCA. Epicardial electrogram characteristics can be estimated from body surface in patients with chronic ischemia

Keywords

bioelectric potentials; biomedical measurement; blood vessels; cardiovascular system; electrocardiography; muscle; surgery; 120-channel body surface potential mapping; ECG; Q-amplitude measurement; QR-duration measurement; chronic ischemic myocardium; coronary artery bypass graft surgery; coronary artery supply; dysfunctional myocardium; epicardial electrograms; functional recovery; left scapula; paramedian epigastric region; revascularization; Arteries; Cardiology; Coronary arteriosclerosis; Echocardiography; Electrocardiography; Electrodes; Hospitals; Medical treatment; Myocardium; Surgery;

fLanguage

English

Publisher

ieee

Conference_Titel

Computers in Cardiology, 2005

Conference_Location

Lyon

Print_ISBN

0-7803-9337-6

Type

conf

DOI

10.1109/CIC.2005.1588073

Filename

1588073