Hypertension, most commonly referred to as "high blood pressure", HTN or HPN, is a medical condition in which the blood pressure is chronically elevated. It was previously referred to as arterial hypertension, but in current usage, the word "hypertension" without a qualifier normally refers to arterial hypertension.
2009-10-11

What is A Normal Blood Pressure Level in a Human?

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The normal blood pressures are believed to be somewhere around 120/80 mm of Hg, whereby 120 is the systolic pressure, i.e. the numerator while 80 is the diastolic pressure, i.e. the denominator.

The pressure of the blood changes in each of us throughout life, and on a minute-to-minute basis. It tends to get higher as we age, and is usually lowest when we sleep. As we go through a normal day, it fluctuates and becomes elevated in response to stress, pain, hormonal levels, meals and exercise. These are normal responses to our environment.

The human heart pumps blood through the blood vessels in a wave-like pattern. The peak of the wave corresponds to the heart's contraction. The pressure of the blood at the peak of the heart's contraction is known as the systolic blood pressure. When the heart relaxes, the pressure of the blood falls, and a lower level of blood pressures occurs, known as the diastolic blood pressures. This systolic and diastolic blood pressures are measured at routine doctor's visits and hospitalization. If you are told that your blood pressure is 120 over 80, it implies that your systolic blood pressure is 120 and your diastolic bp is 80. This is an ideal pressure of the blood.

However, the pressure of the blood has been found to vary from individual to individual, at variable times and circumstances. Thus, it was observed clinically that certain range could be said to be within normal for an adult but beyond such limits the body system becomes threatened. The upper limit of the normal is now defined as blood pressures of 135 (systolic pressure) over 85 (diastolic pressure).

Based on these arbitrary figures, hypertension is defined as an elevation in the blood pressure above these ideal levels (140/90mmHg). If either the systolic or the diastolic blood pressure is persistently greater than this, hypertension is said to be present.

Once the level is tampered with, either increasing or decreasing, a problem sets in. This problem posed by normal pressure imbalance may lead to untimely death. This is the more reasons everyone should make sure that there blood pressures are checked regularly. This is to detect any possible increase in the pressure of the blood and take urgent steps towards controlling it.

Hypertension has been reported as one of the 4 killer diseases globally. The case becomes worse with the fact that hypertension shows no symptoms.

Consequently, a handful of people never detect the symptoms until it has crossed the normal blood pressures level. This is a deadly condition that can lead to other killer diseases.



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Added: October 12, 2009
Source: http://ezinearticles.com/

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