Local conduction delay causes R-wave amplitude increase in patients with effort angina

Local conduction delay causes R-wave amplitude increase in patients with effort angina

Eighty-seven unipolar electrocardiograms distributed over the entire thorax were simultaneously recorded before and after treadmill exercise in 43 patients. Exercise-induced R-wave amplitude change (ΔR) and peak R time (time from the onset of QRS to the peak or R wave), were calculated for each lead...

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Veröffentlicht in:Journal of electrocardiology 1988, Vol.21 (1), p.39-44
Hauptverfasser: Ikeda, Kozue, Kubota, Isao, Yamaki, Michiyasu, Igarashi, Hide, Nakamura, Kazuharu, Tuiki, Kai, Yasui, Shoji
Format: Artikel
Sprache:eng
Schlagworte:
Adult
Aged
Angina Pectoris - diagnosis
Angina Pectoris - physiopathology
Biological and medical sciences
Body Surface Area
Cardiology. Vascular system
Coronary Angiography
Coronary heart disease
Electrocardiography - methods
Exercise Test
Female
Heart
Heart Conduction System - physiopathology
Humans
Male
Medical sciences
Middle Aged
Physical Exertion
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Zusammenfassung:Eighty-seven unipolar electrocardiograms distributed over the entire thorax were simultaneously recorded before and after treadmill exercise in 43 patients. Exercise-induced R-wave amplitude change (ΔR) and peak R time (time from the onset of QRS to the peak or R wave), were calculated for each lead. The maximal ΔR of 87 leads was designated as the max ΔR. After exercise, regional delay of peak R time (≥10 msec) on the chest was observed in 13 patients. These patients had significantly higher max ΔR than those without such regional peak R time delay (0.71±0.31mV vs. 0.33±0.20mV, p
ISSN:0022-0736
1532-8430
DOI:10.1016/S0022-0736(88)80022-0