Blood pressure is the force of blood against the artery walls. It rises throughout heartbeats and falls in between heartbeats. There are always two pressures portrayed in blood pressure ranges, the systolic blood pressure and the diastolic blood pressure. Blood pressure ranges are normally written using the systolic blood pressure number before or over the diastolic blood pressure number, as an example 120/80 mmHg. The systolic blood pressure, the 120 as illustrated in the blood pressure chart, is the pressure reading as the heart pumps blood out of the ventricle into the veins. The diastolic blood pressure, the 80 as illustrated in the blood pressure chart, is the resting pressure, which is between beats when the pressure decreases before the next heart pumping action.

High blood pressure is known as hypertension, low blood pressure is hypotension. If there is no obvious cause for hypertension, which is commonly the case, it’s labeled primary hypertension. Secondary hypertension, the term given to only 5 to 10% of cases, can be the result of a variety of factors, amongst them kidney or heart disease and hardening of the arteries.



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