May Is National High Blood Pressure Education Month

Do you know what your blood pressure is? Do you know what a "normal" blood pressure is? It's surprising how many people say no to either or both of those questions. But this is National High Blood Pressure Education Month in the United States, so let's do some educating.

First, some sobering numbers from the Centers of Disease Control (CDC):

- Among American adults who are in the community, meaning that they are not in a hospital or a long-term care facility, about 1/3 or about 68 million have high blood pressure (hypertension).

- Hypertension is very expensive to the economy. With the associated healthcare services and medications, as well as missed days of work, hypertension costs the United States about $93.5 billion (with a B) in 2010, and the costs are rising.

But what exactly is hypertension?

As your heart pumps oxygen-rich blood away towards your body's organs and tissues, the blood pushes against the arteries, which carry the blood. The more resistance the blood meets as it goes through, the harder the the heart has to pump and the higher the pressure goes. The less resistance there is, the lower the blood pressure goes.

Picture a garden hose. As the hose rests along the ground, straight, the water pressure remains even as it flows through. If you pinch the hose, or make the end narrower, the pressure will build up. Along the same lines, if you cut holes in the hose or replace it with a wider hose, the pressure will not be as strong.

When the heart has to work hard to get the blood through the arteries, it can tire or become damaged.

So, why is that dangerous?

The harder your heart has to work, the higher the risk of it becoming damaged or you developing heart disease. Heart disease is one of the leading causes of death in North America.

You can't wait until you have signs of high blood pressure because there are no symptoms. This is exactly why hypertension is called the silent killer. By the time the damage is done, it's often too late.

Finding out your blood pressure

Many drugstores have blood pressure machines in the pharmacy area that anyone may use. If you don't know your blood pressure, this is a good place to start, unless you are seeing your doctor or nurse practitioner anyway.

Your blood pressure has two numbers, an upper number and a lower one. The upper number is the systolic pressure, as the heart beats. The lower number is the diastolic pressure, as the heart relaxes. When a nurse takes your blood pressure with a stethoscope, he or she is listening for when the beating of the blood begins as it flows through the artery and then when it can no longer be heard. The measurements are in millimeters of mercury, or mmHg.

The National Heart Lung and Blood Institute suggests that a normal blood pressure for a healthy adult 18 years old or older is one where the systolic number is 120 mmHg or lower and the diastolic is 80 mmHg or lower. A blood pressure of 120 to 139 over 80 to 89 is considered to be prehypertension. This is followed by stage I hypertension (140 to 159 over 90 to 99) and stage II (160 or higher over 100 or higher).

If you are monitoring your blood pressure at a local store or with a machine that you have at home, it's important to be consistent by using the same machine each time, much the way you should weigh yourself on the same scale each time. Every machine is a bit different. Your blood pressure may come out to three different readings on three different machines. By taking it always on the same machine, you will see if there are any changes. It is also best to take it at the same time of day each time as blood pressures can rise and fall throughout the day.

If you think that your blood pressure is too high, you should talk to your doctor or nurse practitioner about it. It could be helpful if you keep a record of your own blood pressure measurements, a diary, so you can show the doctor what you mean.

White coat syndrome

Some people have perfectly normal blood pressures, but it shoots up whenever they have their pressure taken by a doctor or nurse. This is what we often call white coat syndrome. If this happens to you, having your own machine at home and keeping track yourself may be more helpful than just having your pressure taken at the doctor's office.

Low blood pressure

You don't hear about low blood pressure too often because, as a rule, it's not a serious problem in every day life. If you are up and about, living life as you want, a lower than average blood pressure is likely not going to cause any problems. However, people with low blood pressures can get dizzy more quickly than other people, so it is important for them to get up slowly from a sitting position, be sure they are well hydrated, and to eat well.

So - what's your blood pressure? Feel free to let us know in the comments section. Mine is usually around 115/70 or so, but it's been much lower, so I'm one of the ones who has to be very careful sometimes.

(Blog post number 2 of Blogathon 2012!)

Taking your blood pressure at home

(hey! the date should read December 20th - don't believe everything you read. :-)

Are you at risk for high blood pressure? Do you have high blood pressure? If so, you may have considered buying an at-home blood pressure machine. Is it worth the cost? According to this study Measuring blood pressure at home lowers drug need http://www.reutershealth.com/archive/2007/12/18/eline/links/20071218elin026.html, it’s possible.

Many people who want to buy a blood pressure machine worry about buying the right one. Of course, you want to buy a reliable machine, but what is more important than the type of machine is how you take it and that you take it consistently with the same machine. No matter how good your machine is, it’s not the same as the one in the pharmacy or in your doctor’s office, so it’s highly unlikely that you will get the same readings. As well, you are probably more relaxed at home than at the office, so that can give different readings as well.

So, what’s important then? The MayoClinic.com has a good write-up on how to do home blood pressure monitoring. They stress some important issues that may not be brought up when someone is shopping around. Think about it for a moment – should someone who weighs 250 pounds be using the same blood pressure cuff size as the person who weighs 105 pounds? Of course not. And, if you have trouble seeing well, then a machine with small, hard to read numbers isn’t going to be any good for you.

Your pharmacist is a good source of information for things like this. They are professionals that are trained, not only in dispensing medication, but in providing advice for health prevention and management. Use this resource – because it’s there for you to use.

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