SYSTOLE

(Lat.), n. f. Si2st(su8st)'o2l-e(a). Gen., syst'oles. Gr., <rv<rToAij (from ffvaTe'AAeev, to draw together). Fr., s. Ger., S. 1. Contraction, especially that of the walls of the heart, occurring alternately with their diastole. [K.] 2. See under DIASTOLE (2a def.). Aborted s., Abortic s. Fr., s. avortee. Of F. Franck. a cardiac s. that does not produce an elevation of pre ure in the aortic system. It may be caused by mitral regurgitation. lack of ventricular distention, or deficient energy, [a, 34.] Anticipated s. Fr., s. anticipee. Of F. Franck, an aborted s. due to a deficient quantity of blood in the ventricle. ["Compt. rend, de 1'Acad. des sci.," 1877, Ixxxiv, p. 786 (a, 34).] Arterial s. The retraction of the arterial wall just subsequent to the cardiac s. [a, 34.] Auricular s. Ger., Vorhof \ The contraction of the auricles of the heart. [K.] Sphygmo-s. The expansion of the pulse corresponding to the s. of the heart, as represented graphically by the sphygmograph. [B; K, 3.] Ventricular s. The s. of the ventricles, [a, 34.] [s. 587]