hypersystole

hy·per·sys·to·le

(hī'pĕr-sis'tō-lē), Abnormal force or duration of the cardiac systole.

hypersystole

(hī″pĕr-sĭs′tō-lē) [″ + systole, contraction] Unusual force or duration of systole. hypersystolic (-sĭs-tŏl′ĭk), adjective