Abstract
At the present time, the effective treatment of arterial hypertension represents the most important element in any attempt on the part of the medical profession to reduce the toll of cardiovascular disease in our society. The incidence of this disturbance in cardiovascular function is extraordinarily high. In some studies, it is estimated that as many as 10% of the white population and 20% of the black population have hypertension,1and the damage done to cerebral, cardiac, and renal function may be devastating. Though often the precise pathogenic basis for the elevated blood pressure cannot be determined (and thereby earns the designation "essential"), the blood pressure usually can be effectively reduced to a normal range. What constitutes this "normal" range has always been open for discussion depending on the population sample under study and the period of observation. In recent years, however, there has been general agreement that diastolic arterial