Degrees and stages of hypertension
Hypertension is classified according to stages and degrees. The division into degrees is based on the level of pressure rise:
I degree – rise in systolic pressure above 139 up to 159 mmHg. art (diastolic fluctuates in the range of 90-99 mm Hg);
II degree – from 160 to 170 mm Hg. Art. (diastolic oscillation interval – 100-109);
III degree – pressure rises above 180 mm Hg. Art.