head 1.1; access; symbols; locks; strict; comment @# @; 1.1 date 2017.10.27.13.10.51; author root; state Exp; branches; next ; desc @This document (Unit3H&D lesson 1.1) is re-created by administrator on 07 July 2017 @ 1.1 log @Initial revision @ text @{ "_id": { "$oid": "59b66d752c47962c1d00349b" }, "_type": "GSystem", "access_policy": "PUBLIC", "altnames": "3.1.1 What causes high BP?", "annotations": [], "attribute_set": [], "author_set": [ 1 ], "collection_set": [], "comment_enabled": null, "content": "
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High Blood Pressure

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Let\u2019s read a story about hypertension or high blood pressure
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Sunita\u2019s mother had not been feeling well for a few days. She was feeling tired and having headache for nearly 2 weeks but she was hesitant to go to see a doctor. She thought that these are not very serious symptoms. Sunita managed to convince her and took her to the hospital to consult doctor Mahi. After waiting for their turn for half an hour they went to the doctor\u2019s cabin. Sunita\u2019s mother told Dr.Mahi that she was not feeling good for last few days. She was getting tired very soon. The doctor told her that she will check mother\u2019s blood pressure.

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Sunita saw the doctor open a box like instrument.
\r\nThe lid had a scale containing some liquid substance, while inside the box was kept a                   \"bbpmachine2\"

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rubber bag with cuff and rubber pump.

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The doctor kept talking to Sunita\u2019s mother while wounding the cuff tight
\r\naround her arm. She also used a stethoscope. She asked her, 'what is your age?' she also asked about food habits and stress. she then said that the blood pressure is currently higher than normal and we need to keep checkig it regularly. 
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\u201cBlood pressure? What is that?\u201d Sunita asked.

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\r\nDoctor Mahi told her, \u201cThis is the pressure exerted by blood on the pipes that carry blood in
\r\nour body. Every time the heart beats, it pushes the blood with some pressure in the blood vessels. The blood pressure meter is used to measure the pressure in blood pipes. The stethoscope is used to hear the sound produced inside the body by   the heartbeats.\u201d

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\r\nAll this was surprising for Sunita.

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\u201cBlood pressure or \u2018BP\u2019 of most of the people varies within a certain range during most of the day\u201d the doctor continued. \u201cThat range is called normal. Sometimes for a person, blood pressure becomes constantly higher or lower than the normal range and this can be dangerous for our body.\u201d

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She prescribed some medicine and asked her to come after one week. She advised Sunita\u2019s mother reduce salt and oil in her food and told her to get her B.P checked from time to time.

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Let\u2019s investigate how blood flow can be affected.

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Heart pumps blood into the blood pipes and these pipes carry blood to different organs. Blood pressure is different in different people and also varies during a day for the same person. There are different factors that affect our blood pressure. One of the factors is blood flow i.e., amount of blood that flows in the blood pipes at a time.

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What will reduce flow of blood through blood pipes? 
\r\nMake a guess and write it down in your notebook.

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High Blood Pressure

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Blood pressure of a person depends upon various factors. Blood flow through the pipes is one of the factors. When blood flows through the pipes in our bodies, they exert pressure on the walls of the pipes. The ease with which blood flows is indicated by our \u2018blood pressure\u2019. The flow gets affected by the diameter of blood pipe and any obstruction in them. Our food habits, stress level and exercise also affect our blood pressure in complex way  Blood pressure is also influenced by hereditary factors. If both or either of the parents have high blood pressure then the chances of their son/daughter having high blood pressure increases.
\r\nOften high blood pressure does not show any specific symptoms in a person.  Hence it is advised to check it regularly after age of 30. Regular check-ups would be able to detect if the range is not normal. Keeping the blood pressure in normal range is very important to avoid complications like heart attack and stroke.

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