Estimates of the coexistence of epilepsy and psychogenic nonepileptic seizures vary from 5 percent to more than 60 percent, depending on the study setting and diagnostic criteria.3 Recent studies17, 22 using strict criteria for a diagnosis of epilepsy found that only 5 to 10 percent of patients with non-epileptic seizures have concurrent epileptic seizures.
the contraction, or period of contraction, of the heart, especially of the ventricles, during which blood is forced into the aorta and pulmonary artery. atrial systole. contraction of the atria by which blood is forced into the ventricles; it precedes the true or ventricular systole. extra systole. see extrasystole.
Systole is the contraction of the left and right ventricles, resulting in blood flow to the body and lungs, respectively. Diastole includes the contraction of the atria and the filling of the ventricles. The cardiac cycle breaks systole and diastole down into five phases during one heartbeat. It describes changes in pressure, volume, and flow through the heart in each phase. Systole is comprised of isovolumetric ventricular contraction and ventricular ejection. Diastole is comprised of isovolumetric ventricular relaxation, early diastole (rapid inflow & diastasis), and late diastole (atrial systole).