Multiple choice Stage 4 of High Blood Pressure (Very severe) is : 210/120 & up 209/119 180/110 179/109 Reveal answer Fill a bubble to check yourself A Correct answer Explanation Hypertensive crisis or severe hypertension is generally classified as blood pressure readings of 180/120 mmHg or higher. 210/120 is well within the range of a severe hypertensive emergency.