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Blood Pressure

Blood Pressure

Is the pressure of the blood within the arteries. It is produce primarily by the contraction of the heart muscle. Its measurement is record by two numbers.

The first (systolic pressure) is measure after the heart contracts and is highest.

The second (diastolic pressure) is measure before the heart contracts and lowest.

A cuff is use to measure the pressure. Elevation of blood pressure is called  hypertension.

Blood Pressure

one of the vital signs—together with respiratory rate, heart rate, oxygen saturation, and body temperature—that healthcare professionals use in evaluating a patient’s health.

Normal resting , in an adult is approximately 120 millimetres of mercury (16 kPa) systolic over 80 millimetres of mercury (11 kPa) diastolic, denoted as “120/80 mmHg”.

Globally, the average , age standardized, has remain about the same since 1975 to the present, at approx. 127/79 mmHg in men and 122/77 mmHg in women, although these average data mask significantly diverging regional trends.

 

 influenced by cardiac output, systemic vascular resistance and arterial stiffness and varies depending on situation, emotional state, activity, and relative health/disease states. In the short term,  regulated by baroreceptors which act via the brain to influence the nervous and the endocrine systems.

that is too low is called hypotension, pressure that is consistently too high is called hypertension, and normal pressure is called normotension.  Both hypertension and hypotension have many causes and may be of sudden onset or of long duration. Long-term hypertension is a risk factor for many diseases, including stroke, heart disease, and kidney failure. Long-term hypertension is more common than long-term hypotension.