return extrasystole

re·turn ex·tra·sys·to·le

a form of reciprocal rhythm in which the impulse having arisen in the ventricle ascends toward the atria, but before reaching the atria is reflected back to the ventricles to produce a second ventricular contraction.

re·turn ex·tra·sys·to·le

(rĕ-tŭrn' eks'tră-sis'tŏ-lē)
A form of reciprocal rhythm in which the impulse having arisen in the ventricle ascends toward the atria, but before reaching theatria is reflected to the ventricles to produce a second ventricular contraction.