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High Blood Pressure - How Important Is It?
Your doctor may use the technical term hypertension, but it is more commonly called high blood pressure and at least 65 million American adults have high blood pressure. That translates into almost one-third of all American adults, and two thirds of all Americans over the age of 65. Because high blood pressure often has no warning signs or symptoms, it is often called “the silent killer”. High blood pressure is a very dangerous condition. If you don’t treat high blood pressure it can kill you and unfortunately, one-third of the people that have high blood pressure don’t even know it. One important thing to know about high blood pressure is that you can’t cure it. You can only treat high blood pressure with lifestyle changes and medication, and you will need to treat it for the rest of your life.
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What is blood pressure? Blood pressure is the amount of force your blood is putting on to the walls of your arteries as it is moved through your body by your heart. Arteries are the blood vessels that carry the oxygen rich blood away from your heart and to all the muscles, organs and tissues in your body.Without this oxygen rich blood, your muscles, organs and tissues would die and eventually, so would you. Blood pressure normally rises and falls throughout the day, and changes heartbeat to heartbeat.
How is blood pressure measured? The test is quick and painless. The doctor or nurse puts a cuff around your upper arm (the technical term for the devices is a sphygmomanometer; pronounced sfig’-mo-ma-nom-e-ter). This device is used to get an actual measurement of the pressure inside your arteries. Your blood pressure measurement is made up of two numbers, one above or before the other. The top or first number which is technically called systolic blood pressure is the pressure in your arteries while your heart contracts during a heart beat. The bottom number is technically called your diastolic blood pressure and it is the pressure in your arteries as your heart relaxes between heart beats.
If you have ever felt your pulse in your wrist or your neck you have felt the differences between your systolic and diastolic blood pressure. The pulse you are feeling is the heart beating, which creates your systolic blood pressure. Between pulses, your heart is relaxing and the measurement of pressure during that time is your diastolic blood pressure.
These two numbers make up what is called your blood pressure reading. For example a blood pressure measurement of 120/80mmHg (that is, millimeters of mercury) means the pressure measured during a heart beat is 120, and measured in between heart beats at 80. This measurement would be expressed verbally as “120 over 80”. Both numbers in the test are important.
Why is high blood pressure dangerous? High blood pressure is dangerous because it makes your heart work too hard, and puts undue stress on your arteries. Having high blood pressure increases your chance of having a heart attack or stroke, (the 1st and 3rd leading causes of death). In fact, every 20mmHg increase in your systolic blood pressure or 10mmHg increase in your diastolic blood pressure DOUBLES your risk of dying from a heart attack or stroke. It also contributes to your chance of developing other conditions such as congestive heart failure, kidney disease and even blindness. High blood pressure is especially dangerous because it often has no warning signs or symptoms. Regardless of age, race, or gender anyone can develop high blood pressure and once it develops, it usually lasts a lifetime. So it is especially important to continue treatment of high blood pressure for a lifetime.
What is high blood pressure? By viewing the table below, you can see that a reading of 140/90 is considered high. If your blood pressure is between 120/80 and 139/89 you are considered prehypertensive. That means you don’t have high blood pressure now, but you are probably going to develop it in the future.You can take steps now by adopting a healthy lifestyle to reduce your risk of developing it in the future.
|
|
Blood Pressure Level (mmHg) |
|
Category |
Systolic |
|
Diastolic |
|
Normal |
Less than 120 |
and |
Less than 80 |
|
Prehypertension |
120-139 |
or |
80-89 |
|
High Blood Pressure |
|
Stage 1 Hypertension |
140–159 |
or |
90–99 |
|
Stage 2 Hypertension |
Greater or equal to 160 |
or |
Greater or equal to 100 |
At the age of 55, if you do not have high blood pressure, there is still a 90% chance you will develop it in the future. As you can see, high blood pressure is a disease that most people will develop over their lifetime. Your doctor will make a diagnosis of high blood pressure if the results of your test are high on two separate occasions.
There are two numbers! Which one is the most important? Both numbers are important. But once you are over the age of 50, the top number or systolic blood pressure becomes the more accurate reading for high blood pressure. It is high if it is 140 or above. Diastolic blood pressure does not need to be high for you to have high blood pressure.
When only the top number or systolic blood pressure is high, your doctor calls it “isolated systolic hypertension” or ISH. This is the most common form of high blood pressure in older Americans. You may have ISH and feel fine. As with other kinds of high blood pressure, ISH often has no symptoms or warning signs. Also like any form of high blood pressure ISH is dangerous if left untreated. Like all types of high blood pressure, ISH can never be cured once it has developed, it can only be controlled.
Many studies have proven that controlling high systolic blood pressure can reduce deaths, illness, and improve quality of life; most Americans do not have their systolic blood pressure under control.
Diastolic blood pressure or the bottom number continues to be an important measure of blood pressure, especially in younger people. The higher the diastolic number, the greater the risk of heart attack, strokes, and kidney failure. As people get older, the diastolic blood pressure reading tends to get lower as the systolic number tends to get higher.Your doctor will use both number when determining your blood pressure category and the appropriate prevention and treatment.
What causes high blood pressure? The causes of high blood pressure vary. It may include narrowing or hardening of the arteries, a greater than normal blood volume, or the heart beating faster or more forcefully than it should. Any of these things will increase the pressure against the artery wall. High blood pressure could be caused by another medical condition like gestational hypertension (high blood pressure during pregnancy). Or it may even be limited to a specific part of your body like pulmonary hypertension, but those conditions are rare. By far, the most common cause of hypertension, or high blood pressure, is a genetic predisposition which is called “essential hypertension”.
How is high blood pressure treated? Along with there being a lot of different causes of high blood pressure, there are also a lot of different treatment options for high blood pressure.Your minimum treatment goal is to have your blood pressure below 140/90 and even lower for people with diabetes, kidney disease or other conditions. Adopting a healthy lifestyle is an important factor, however most patients will require medication to control high blood pressure. Many patients need two, three or even four different types of prescription medications at once to control their high blood pressure. Because high blood pressure can be deadly, it is important that patients get and keep blood pressure under control, and monitor it at home as well as with your doctor.
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