in 11 fully conscious dogs with chronically implanted spicardial electrodes , 50 hz sine-wave electrical stimulation of the left atrium reliably and repeatedly produced an arrhythmia which was indistinguishable from atrial fibrillation in terms of its ecg appearance , the statistical properties of the ventricular response and responses to a number of pharmacological agents .
C0003811
arrhythmia
C0004238
atrial fibrillation