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A bit about blood pressure Part 1 (Teacher: Michael)

"I I've blood pressure, doctor."

Whenever I this statement - and it is more often than you - I sorely tempted to the following reply: "Thank goodness you , you'd dead if you hadn't blood pressure!"

What my patient is really trying to is: "I I've a higher than normal blood pressure."

A certain pressure is required to propel blood all over the body which, for the average adult, contains over 96,000 km of blood vessels. Without blood circulating through the body, cells in the brain, kidneys and muscles die rapidly.

Blood pressure varies not only from day to day, but also from hour to hour. It also changes with posture; lower when lying than when sitting or standing .

This is why old giddy through lack of blood to the brain when they in the morning. It is also why you sometimes faint and giddy when you bend to tie shoelaces and then straighten .

Running for a bus or playing squash cause your blood pressure to rise from physical exertion.

But there emotional factors too: fear that you to late, the stress of an exam, interview or driving test.

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