Blood/Heart: A Slice of Orange - March 2007 - What is blood pressure?

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Welcome to the freshest issue of A Slice of Orange, a newsletter specially designed to help refresh your memory and clarify basic health information and offer juicy tips on uplifting your health. Our first issue is all about blood pressure (BP) and what to do when high BP becomes a threat to health.

A quick refresher:

What is blood pressure?

The heart is a cone-shaped muscle

When the heart pumps blood into the arteries, the blood flows with a force pushing against the walls of the arteries. This force is called the blood pressure (BP). When your BP is measured, it is a measure of how hard the heart has to work to pump the blood.

The art of the heart that acts as a pump. With each heartbeat or contraction (systole), the heart pumps blood out of the heart to the lungs (where blood is filled with oxygen) and to the rest of the body (to provide oxygen and nutrients for all the body’s systems). The heart contracts in two stages:

• The right and left atria contract, pump- ing blood to the right and left ventricles. • The ventricles contract to pump blood out of the heart.

Then the heart muscle has to relax (diastole) before the next heartbeat to let blood fill up the heart again.

BP is measured in millimeters of mercury, or mmHg. It’s recorded as two numbers:

The top, larger number: systolic pressure, or the pressure of the 110 blood against arterial walls (pressure generated when the heart pumps) The bottom, smaller number: diastolic pressure, or the pressure in 70 the arteries while the heart is filling or resting between pumps

What is high BP? What causes it? Normal BP is systolic less than 120 mmHg, and diastolic less than

Systole

Right atrium

Right ventricle

Diastole

Left atrium Left ventricle

80 mmHg. If your systolic is 120139 or diastolic 80-89 mmHg, you are considered prehypertensive and at a higher risk of developing hypertension. Hypertension is defined by systolic 140 mmHg or higher, or diastolic 90 mm Hg or higher.


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symptoms. Some people with the condition may experience

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A sfigmo-WHAT?

headaches, dizziness, blurred vision or nausea, but these are not specific symptoms. Hypertension has been referred to as the ‘silent killer’ because However, one high BP reading

it doesn’t seem deadly but it

does not necessarily mean you

can potentially cause serious –

have hypertension. The classifi-

even potentially life-threatening

cation of hypertension is based

– conditions, such as heart

on the average of two or more

disease, heart attack, stroke or

properly measured, seated BP

kidney failure.

The device used to measure BP is called a sphygmomanometer (sfig’-mo-ma-nom-e-ter).

readings on each of two or more office or clinic visits.

Why should I lower BP?

In most cases, the exact cause

In a nutshell, reducing BP will

of high BP is not known. This is

reduce your risk of serious

called primary hyperten-

complications. It’s not easy to

sion. Sometimes, however, an-

convince people who don’t feel

other condition (kidney disease,

anything wrong to change their

some tumors, thyroid abnor-

lifestyle. This is why it’s impor-

malities, etc) causes secondary

tant to spread the word about

hypertension.

the harmful effects of having high BP over the long term.

Some risk factors that contribute to high BP include: • Old age

What can I do about high BP?

• Heredity

There are basically two ways to

• Obesity

lower BP: with medication and

• Lack of exercise

with lifestyle modifications.

• Alcohol use

Your doctor – and only your

• Certain drugs, including birth control pills

doctor – will decide which antihypertensive meds to give you. NEVER self-medicate!

What are the symptoms and complications of hypertension?

Each person’s case is different,

Many people with high

Some people don’t even need

BP don’t know it because

medication to maintain optimal

it doesn’t usually cause

BP.

and medical therapy should be tailored to suit each individual.

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It usually consists of: • an inflatable cuff; • a measuring unit that displays the BP reading; and • a bulb to inflate the cuff (especially in manual manometers).

There are three types of sphygmomanometers in use today:

• Mercury-based units - considered the most accurate of the three kinds - used with a stethoscope

• Aneroid units

- mercury free with an easy-to-read gauge - used with a stethoscope

• Automatic units

- mercury free and usually battery operated - BP reading is displayed digitally so a stethoscope is not required - convenient for home use but not as precise as mercury-based units

So how does it work, exactly?

When the cuff is inflated around your arm, it cuts off the blood flow to your hand. When the pressure in the cuff is slowly released, the blood starts flowing again. For manual manometers, the person taking your BP will need a stethoscope to listen to the thumping sounds your blood flow makes. The first snapping sound indicates the systolic pressure. As pressure from the cuff is continually released, the sound will eventually disappear. The very last thump indicates the diastolic pressure.


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As for healthy lifestyle changes, here are

•Reduce sodium (salt) in your diet.

women. One drink is 12 ounces of beer,

the general guidelines. We’ve included

Reduce your dietary sodium intake to no

5 ounces of wine or 1.5 ounces of 80-

a few practical tips per item to help you

more than 2.4 g sodium or 6 g salt.

proof distilled spirits.

changing your habits but don’t forget

Avoid ‘instant’ or processed foods,

Need more reason to stay away from

to ask your doctor or other healthcare

because these are usually high in sodium.

alcohol? Remember that alcoholic drinks

professional before trying anything new.

Start by limiting your fast-food lunches. It

are usually high in calories (so they

pays to bring your own homemade lunch!

may set you back weight-wise) and may

• Reduce weight. Aim to maintain

It may be a bit of a hassle, but wait ‘til you

interfere with the effectiveness of your

your body mass index (BMI) at 18.5 to

see the results.

antihypertensive meds.

get started. Discover your own ways of

24.9 kg/m . BMI is computed by dividing 2

your weight in kilograms by the square of

•Make physical activity part of

your height in meters (you can always just

your life. Engage in regular aerobic

search the Web and use the many BMI

physical activity, such as brisk walking, at

calculators available online).

least 30 minutes per day on most days of the week.

To lose weight the healthy way, don’t rush it! You’ll keep the weight off longer if you

Divide the required 30 minutes of exercise

aim for 0.5 to 1 pound per week.

throughout your regular day. Aim to get to work earlier and circle your building or

• Adopt a healthy eating plan.

office block a few times before entering.

Consume a diet rich in fruits, vegetables

Use the stairs instead of the escalator or

and low-fat diary products with a reduced

elevator. Wash your car yourself. There

content of saturated and total fat.

are a million ways to move more!

One small habit you can try to get rid of is

•Moderate

going back for seconds – but make sure

sumption. Limit alcohol intake to no

your first serving is not gigantic or too

more than 2 drinks per day for men

small.

and to no more than 1 drink per day in

your

alcohol

con-

What about smoking? Smoking does not directly

affect BP but it greatly increases your health risk if you have high BP. This cannot be overemphasized: Find ways to permanently

STOP SMOKING.

A slice of trivia What do you call the snapping or thumping sounds that blood flow makes when the pressure from a BP cuff is released? Clue: It begins with a K and was named after a Russian doctor. Freshen up on your researching

skills, send us the answer at orange@activelink-consult.com and win a prize!

Five people among those who

sent the correct answer will be randomly chosen to win a copy of HealthGuide, a valuable resource for the health conscious.

We’ll feature the answer in the second issue of A Slice of Orange.

Looking to enhance your corporate healthcare benefits? E-mail us at benefits@activelink-consult.com. The information in this newsletter is not intended as a substitute for professional medical care. Consult a doctor for all matters relating to your health, particularly for symptoms that may require diagnosis or medical attention. © 2007 ActiveLink Employee Benefits Made Better

ActiveLink Insurance Brokers, Inc. 104 VA Rufino Street, Legaspi Village, Makati City, 1229 Philippines T: +632 8174606 / 817 7900 www.activelink-consult.com

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The Orang e wants to h ear from you!

Dying to ask us your health related questio ns? Itching to share your pe rsonal health tips? Want to sugg est topics for future issues? Feel fre e to contact us . You can e-mai l our team at orange@activ elink-consult.co m.


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