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.
Normally, both atria contract at the same time. The term systole is synonymous with contraction (movement or shortening) of a muscle. Electrical systole is the electrical activity that stimulates the cardiac muscle of the heart chambers to make them contract.he term systole is synonymous with contraction (movement or shortening) of a muscle. Electrical systole is the electrical activity that stimulates the cardiac muscle of the heart chambers to make them contract.