Hypertension is the term for blood pressure that is higher than normal (120/80). In this measurement, 120 mmHg (millimeter) of mercury pressure) is the systolic, or pumping, pressure and 80 mmHg is the diastolic, or resting pressure. If repeated checks of blood pressure 190/100 mmHg ) of an individual is 140/90 (140 over 90) or higher, it shows hypertension. High blood pressure leads to heart diseases and also affects vital organs like brain and kidney.