According to the National Heart, Lung and Blood Institute, blood pressure is considered to be "high" over 140/90 (unless you have diabetes, which it then should be no higher than 130/80)...
The larger number represents systolic pressure, or the maximum pressure. The smaller number represents diastolic pressure, the minimum pressure in one's arteries. It is one of the principle vital...
Blood pressure at or above 140/90 is considered high blood pressure. Conversely, pressures below 100/60 (or in some cases, 90/60) are considered low blood pressure.
Blood pressure readings are always expressed as two values, one high and one low, representing the squeeze (systolic) and relax (diastolic) phases of the heart's pumping. The units of blood pressure...