Blood pressure is the pressure of circulating blood against the wall of arteries. A drop in blood pressure may indicate a loss of blood, a loss of vascular tone and a cardiac pumping problem.

Normal blood pressure

Blood pressure level varies with age and gender.

The normal ranges for blood pressure are as follows:

a) Adults: 90 to 140 mm Hg (systolic)/60 to 90 mm Hg (diastolic).
b) Children (1 to 8 years): 80 to 110 mm Hg (systolic).
c) Infants (newborn to age 1 year): 50 to 95 mm Hg (systolic).