Normal Blood Pressure For Children
Normal BP ranges vary in children by age. The University of Iowa Stead Family Childrens Hospital provides this chart:
| Normal Blood Pressure for Children | |
|---|---|
| Systolic | |
| 112128 mm Hg | 6680 mm Hg |
What is considered healthy for your child also varies by height, age, and sex. You can use Baylor College of Medicine’s calculator to see if your childs blood pressure reading is in a healthy range.
The Basics Of Blood Pressure
A blood pressure reading is made up of two numbers expressed as a fraction. The top number, or systolic pressure, measures how much pressure is in the arteries when the heart contracts. The bottom number, or diastolic pressure, measures the blood pressure between beats.
When your heart pumps, all that blood rushes and fills your arteries, Baker said. Its just like plumbing: if youre pumping more water into the system, the pressure inside the plumbing goes up. Thats your systolic reading. When the heart relaxes and fills, the reading falls and you get the lower number, or your diastolic reading.
Checking Blood Pressure At Home
Keeping track of blood pressure at home is important for many people, especially if you have high blood pressure. This helps you and your doctor find out if your treatment is working.
Your doctor may also suggest that you check your pressure at home if they think you may have “white coat hypertension.” It’s a real condition. The stress of being in a doctor’s office raises your blood pressure, but when you’re home, it’s normal.
Ask your doctor to recommend an easy-to-use home blood pressure monitor. Make sure the cuff fits properly. If your arm is too big for the cuff, the reading may be higher than your blood pressure really is. Ask your doctor for a larger cuff or make sure you buy a home monitor with a cuff that fits you.
You also can use a wrist blood pressure monitor, but they often aren’t as accurate. Follow the directions that come with the device to make sure you are using it correctly.
No matter which type of blood pressure monitor you have, it’s a good idea to take it to your doctor’s office. You can compare its reading to the numbers your doctor gets. Avoid caffeine, cigarettes, and exercise for at least 30 minutes before the test.
When you take your blood pressure at home, sit up straight in a chair and put both feet on the floor. Ask your doctor or nurse to show you the right way to position your arm so you get accurate readings.
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Taking Your Pulse Versus Checking Your Blood Pressure
While both are indications of health, blood pressure and heart rate are two separate measurements. Learn more about the difference between blood pressure and heart rate.
Systolic is less than 120 and my diastolic is less than 80
Great job! Your blood pressure is normal. To keep your readings in this range, stick with heart-healthy habits like following a balanced diet and getting regular exercise.
Systolic is 120 129 and my diastolic is less than 80
The good news is that you dont have high blood pressure. However, your numbers fall within the Elevated category, making you more likely to develop high blood pressure unless you take action to control it. Ready to make some small changes that have big impacts? Healthy lifestyle choices are a great place to start.
Systolic is 130 139 or my diastolic is 80 89
You are in the first stage of hypertension, but there are actions you can take to get your blood pressure under control. Your doctor will speak to you about small changes that can make a big difference and other BP Raisers. In addition, monitoring blood pressure outside of the doctors office is important for BP control.
Systolic is 140 or higher or my diastolic is 90 or higher
Systolic is higher than 180 and/or my diastolic is higher than 120
Written by American Heart Association editorial staff and reviewed by science and medicine advisers. See our editorial policies and staff.
Why Does Blood Pressure Increase With Age
Doctors dont completely understand why blood pressure tends to rise with age. Blood pressure is the force of blood as it flows through the arteries. As you age, your arteries may narrow and become stiff. Narrow arteries lead to an increase in blood pressure. High blood pressure can damage the walls of the arteries and the heart itself.
In some cases, high blood pressure could be a result of lifestyle, the environment, certain medications, or other conditions such as sleep apnea, kidney disease, or thyroid problems.
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Blood Pressure Reading Chart
Below is a blood pressure reading chart for you.
*Remember that the larger figure in your reading represents the systolic value the smaller figure represents your diastolic value. Systolic is the measurement of pressure when the heart is beating. Diastolic is the measurement of pressure when the heart is resting.
Drugs That May Trigger Low Blood Stress
Some medicines may cause low blood stress, together with:
- Water tablets , resembling furosemide and hydrochlorothiazide
- Alpha blockers, resembling prazosin
- Beta blockers, resembling atenolol and propranolol
- Medication for Parkinsons illness, resembling pramipexole or these containing levodopa
- Sure forms of antidepressants , together with doxepin and imipramine
- Medication for erectile dysfunction, together with sildenafil or tadalafil , notably when taken with the guts medicine nitroglycerin
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Dangers Of Low Blood Pressure
Low blood pressure may not be discussed as often as high blood pressure, but it should be addressed, as prolonged low blood pressure can negatively affect your organs.
A certain amount of blood pressure is needed to maintain blood flow to the organs, says Dr. Wong. The blood supplies oxygen and nutrients to these organs. If the blood pressure is too low, an adequate blood supply cannot get to these organs.
If left untreated, low blood pressure can increase your risk of fainting, heart attack and organ damage, adds Dr. Desai.
Low Blood Pressure Definition And Facts
- Low blood pressure, also called hypotension, is blood pressure low enough that the flow of blood to the organs of the body is inadequate and symptoms and/or signs of low blood flow develop.
- Low pressure alone, without symptoms or signs, usually is not unhealthy.
- The symptoms of low blood pressure include lightheadedness, dizziness, and fainting. These symptoms are most prominent when individuals go from the lying or sitting position to the standing position .
- Low blood pressure that causes an inadequate flow of blood to the body’s organs can cause strokes, heart attacks, and kidney failure. The most severe form is shock.
- Common causes of low blood pressure include a reduced volume of blood, heart disease, and medications.
- The cause of low blood pressure can be determined with blood tests, radiologic studies, and cardiac testing to look for heart failure and arrhythmias.
- Treatment of low blood pressure is determined by the cause of the low pressure.
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When To Check Blood Pressure
- If your blood pressure is normal , get it checked every year, or more often as your doctor suggests.
- If your blood pressure is elevated — a systolic blood pressure between 120 and 129 or diastolic blood pressure of less than 80 — your doctor will probably want to check it every 3-6 months. They will probably recommend lifestyle changes like more exercise and a better diet.
- If you have stage 1 hypertension — 130-139 over 89-90 — the doctor might suggest lifestyle changes and see you again in 3-6 months. Or they could tell you to make the changes and give you medication, then recheck your condition in a month. It depends on what other health conditions or risk factors you have.
- If you have stage 2 hypertension — 140/90 or higher — youâll likely get medication. You’ll also need to make lifestyle changes and see the doctor again in a month.
Symptoms Of Low Blood Pressure
Most doctors will only consider chronically low blood pressure as dangerous if it causes noticeable signs and symptoms, such as:
- Dizziness or lightheadedness
- Fainting
- Dehydration and unusual thirst
- Dehydration can sometimes cause blood pressure to drop. However, dehydration does not always cause low blood pressure. Fever, vomiting, severe diarrhea, overuse of diuretics and strenuous exercise can all lead to dehydration, a potentially serious condition in which your body loses more water than you take in. Even mild dehydration can cause weakness, dizziness and fatigue.
- Lack of concentration
- Depression
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Chart: What Are Normal Blood Pressure Ranges By Age For Women
As with men, women’s average BP ranges also vary by age group. The age group with the lowest normal blood pressure reading is different between the systolic and diastolic reading. Women ages 21-25 have the lowest normal diastolic reading , while women age 31-35 have the lowest normal systolic reading . The age group with the highest normal blood pressure reading is women ages 56-60 .
Blood Pressure Readings Explained
What do the numbers mean?
Everyone would like to have healthy blood pressure. But what exactly does that mean?
When your doctor takes your blood pressure, its expressed as a measurement with two numbers, with one number on top and one on the bottom , like a fraction. For example, 120/80 mm Hg.
The top number refers to the amount of pressure in your arteries during the contraction of your heart muscle. This is called systolic pressure.
The bottom number refers to your blood pressure when your heart muscle is between beats. This is called diastolic pressure.
Both numbers are important in determining the state of your heart health.
Numbers greater than the ideal range indicate that your heart is working too hard to pump blood to the rest of your body.
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What Can Cause A Short
It’s normal for blood pressure to go up and down throughout the day. Things like exercise, stress, and sleeping can affect your blood pressure. Some medicines can cause a spike in blood pressure, including certain asthma medicines and cold remedies.
A low blood pressure reading can be caused by many things, including some medicines, a severe allergic reaction, or an infection. Another cause is dehydration, which is when your body loses too much fluid.
Living With Low Blood Pressure
Medicines and lifestyle changes can help you live safely with chronic low blood pressure. Your doctor can recommend steps you can take to manage your low blood pressure. These actions can help control the condition:
Drink more water. This can help avoid dehydration.
Medicines and lifestyle changes can help you live safely with chronic low blood pressure.
Avoid alcohol. Alcoholic beverages are dehydrating, and alcohol changes how medicines work in your body.
Slow down. Take your time when standing up. If lying down, sit up first. Then wiggle your feet and move your legs. This will increase circulation and get your heart rate up so that you dont feel lightheaded when you stand up.
If your medicine and lifestyle changes do not reduce your low blood pressure symptoms, talk with your doctor about other changes you can make.
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Blood Stress: How Low Are You Able To Go
Whats thought of low blood stress for you could be regular for another person. Most medical doctors take into account blood stress too low provided that it causes signs.
Some consultants outline low blood stress as readings decrease than 90 mm Hg systolic or 60 mm Hg diastolic. If both quantity is under that, your stress is decrease than regular.
A sudden fall in blood stress will be harmful. A change of simply 20 mm Hg a drop from 110 systolic to 90 mm Hg systolic, for instance may cause dizziness and fainting when the mind fails to obtain sufficient blood. And massive drops, resembling these brought on by uncontrolled bleeding, extreme infections or allergic reactions, will be life-threatening.
Serious Injuries And Shock
Low blood pressure can also be caused by serious injuries or burns, particularly if you have lost a lot of blood. This can mean that there is less blood being pumped around your body. Low blood pressure can also occur if you go into shock after having a serious injury.
Other kinds of shock are described below.
Anaphylactic shock
Anaphylactic shock, or anaphylaxis, is caused by an allergic reaction to something – for example, a wasp sting or a peanut. During an allergic reaction, your body produces a large amount of a chemical called histamine, which causes your blood vessels to widen and leads to a sudden, severe drop in blood pressure.
Cardiogenic shock
Cardiogenic shock occurs when your heart cannot supply enough blood to your body, so your blood pressure drops. This can happen during a heart attack.
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Symptoms Of Low Diastolic Blood Pressure
Symptoms of isolated diastolic hypotension include tiredness, dizziness, and falls.
Because low diastolic pressure decreases blood flow to your heart, you may also have chest pain or symptoms of heart failure. Heart failure symptoms may include shortness of breath, swelling of your feet or ankles, confusion, and heart palpitations.
Seek immediate medical attention if you have chest pain or difficulty breathing.
Symptoms of low diastolic blood pressure along with low systolic blood pressure include:
- dizziness
What Procedures And Tests Diagnose Low Blood Pressure
In some people, particularly relatively healthy ones, symptoms of weakness, dizziness, and fainting raise the suspicion of low blood pressure. In others, an event often associated with low blood pressure, for example, a heart attack, has occurred to cause the symptoms.
Measuring blood pressure in both the lying and standing positions usually is the first step in diagnosing low blood pressure. In patients with symptomatic low blood pressure, there often is a marked drop in blood pressure upon standing, and patients may even develop orthostatic symptoms. The heart rate often increases. The goal is to identify the cause of the low blood pressure. Sometimes the causes are readily apparent . At other times, the cause may be identified by testing:
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New Findings Focus On Diastolic Blood Pressurethe Second Number In Your Blood Pressure Reading
Image: mangostock/Thinkstock
Of the two numbers that make up your blood pressure reading, the first one typically gets more attention. That’s because as people age, their arteries lose their elasticity, and the inner walls are more likely to accumulate cholesterol-laden plaque. These factors tend to raise systolic blood pressure, a measure of the pressure inside the arteries when the heart contracts to pump blood throughout the body.
Current guidelines suggest that most people should aim for a systolic blood pressure reading of 140 millimeters of mercury or lower. But last year, a widely publicized clinical trial suggested that a target of 120 mm Hg could further reduce the dangers associated with high blood pressure .
Yet reaching that lower target required an average of three blood pressure medications, which resulted in more side effects. Now, two recent observational studies highlight some concerns about blood pressure that’s too low, particularly with regard to diastolic blood pressure. Diastolic blood pressure represents the pressure between beats when the heart relaxes.
What Does A Blood Pressure Reading Look Like
When you have your blood pressure measured, you will be given two numbers, a top number and a bottom number.
- Systolic blood pressure. This is the first, or top, number. This is the highest level your blood pressure reaches when your heart beats, forcing blood around your body.
- Diastolic blood pressure. The second number, or bottom number, is the lowest level your blood pressure reaches as your heart relaxes between beats.
Blood pressure is measured in millimetres of mercury . If the first number is 120 and the second number is 80, this would be written as 120/80mmHg, and youd call it 120 over 80.
This video explains more about systolic and diastolic blood pressure.
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When Is Low Blood Pressure Too Low Hypotension And More
Some people naturally have low blood pressure, known as hypotension. However, when high blood pressure suddenly becomes low blood pressure, it could be cause for concern.
Shutterstock
Low blood pressure, or hypotension, may be a sign of good health and of a decreased risk of heart disease. But not always. At times, continually low blood pressure or a sudden drop in blood pressure can lead to worrisome symptoms and even serious health problems.
What Is A Hypertensive Crisis
A hypertensive crisis occurs when blood pressure suddenly rises above 180 systolic and/or 120 diastolic. This prompt either a hypertensive urgency or hypertensive emergency.
A hypertensive urgency accounts for about 75% of hypertensive crises. In these cases, a person has high blood pressure, but without any serious accompanying symptoms. A hypertensive emergency requires immediate medical care, as high BP is accompanied by one or more serious symptoms, including:
- Acute pulmonary edema
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Low Diastolic Pressure: No Symptoms
“When your systolic blood pressure gets too low, it can manifest as lightheadedness, fainting, and weakness. But low diastolic pressure by itself doesn’t have any symptoms,” says Dr. Paul Conlin, professor of medicine at Harvard Medical School and chief of medicine at the VA Boston Healthcare System.
One of the new studies, which analyzed the medical records of more than 11,000 adults over a period of three decades, found that people who had low diastolic blood pressure were twice as likely to have subtle evidence of heart damage compared with people whose diastolic blood pressure was 80 to 89 mm Hg. Low diastolic values were also linked to a higher risk of heart disease and death from any cause. The findings appeared in the Aug. 30, 2016, Journal of the American College of Cardiology.
Another study, published in The Lancet, involved more than 22,000 people with heart disease, whom researchers grouped according to their blood pressure readings. People with well-controlled blood pressure values were considered the reference group.
Not surprisingly, people with high systolic blood pressure were more likely to experience heart attacks or strokes, be hospitalized with heart failure, or to die compared with people in the reference group. But the same was true for heart attacks, heart failure, and death in people with low blood pressure .