تعريف extrasystole في الإنجليزية الإنجليزية القاموس.
A premature contraction of the heart, producing an interruption or irregularity in heartbeat rhythm, associated with heart disease or the use of some pharmaceuticals
A 30-year-old woman, with no heart disease, was referred to our center with a history of rare episodes of sustained tachycardia and frequent feeling of extrasystoles.