词汇 | systole |
释义 | systole noun[ C ] uk /ˈsɪs.təl.i/ us /ˈsɪs.təl.i/ the part of a heart's action where it pushes blood out(心脏)收缩期 Compare diastole The circulatory system & blood ABO accessory pathway adventitia adventitial ANA auricle bicuspid valve femoral artery gamma globulin glomus granulocyte haematogenous haemic phagocyte portal system precava pulmonary artery pulmonary vein pulmonic tricuspid valve systole | American Dictionarysystole noun[ C ] us/ˈsɪs·tə·li/ biology the part of a heart's action where it pushes blood out systolicadjective[ not gradable ]us/sɪsˈtɑl·ɪk/ Examples of systolesystole The duration of the regurgitant flow varied but in no valves did it occupy the whole systole or diastole. For the great vessels and the arterial valves this was in systole. Venous waveforms in the inferior vena cava and ductus venosus are triphasic with peaks corresponding to maximum systolic velocity, maximum diastolic velocity and atrial systole. It is interesting, however, that they measured the diameter of the infundibulum during systole and could, therefore, have used undersized balloons. This conduit closes during atrial systole, but reopens through the rest of the cardiac cycle. For calculation of ejection fraction, the largest and smallest ventricular areas were taken as diastole and systole respectively. The maximum and minimum diameter of the infundibulum at the hinge point of the leaflets were obtained from different frames during diastole and systole. The peak velocities during left ventricular systole and diastole, their ratio, as well as of the reverse flow at end-diastole were calculated. In these patients, the color flow jet was small, did not show any mosaic pattern, and occurred only in systole. In addition, during systole, a hypertensive right ventricle will deliver desaturated venous blood to the coronary arterial bed. The jet was greatest during ventricular systole and was not seen during diastole. Velocities and integrals of forward flow in systole, early diastole and late diastole were measured; as was duration of pulmonary regurgitation. Thus, early diastolic left ventricularfillingis impaired with redistribution of filling to late diastole and increased dependence on atrial systole. Despite the obvious increase in ventricular volume that occurs during atrial systole, there is no significant increment in intraventricular pressure. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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