Title :
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.
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;
Conference_Titel :
Computers in Cardiology, 2005
Conference_Location :
Lyon
Print_ISBN :
0-7803-9337-6
DOI :
10.1109/CIC.2005.1588073
