What Causes Low Blood Pressure
There are many possible reasons for low blood pressure, according to both Dr. Wong and Dr. Desai, including:
- Heart problems like heart failure or low heart rates
- Endocrine problems, such as parathyroid disease, adrenal insufficiency or hypoglycemia
- Side effects of medications for high blood pressure, prostatic hypertrophy, Parkinsons disease, depression and erectile dysfunction
- Massive weight loss
- Rapid heart rate
Average Blood Pressure By Age
As you get older, your blood vessels tend to become stiffer and plaque can build up in them, which can raise your blood pressure. If your blood pressure becomes too high, you’re at a greater risk for heart disease, strokes, and more.
In 2015, the average blood pressure worldwide was 127/79 mm Hg in men, and 122/77 mm Hg in women, according to a study analysis published in Lancet.
When researchers for the National Center for Health Statistics looked at average blood pressure in U.S. adults between 2001 and 2008, the average reading was 122/71 mm Hg. The breakout was 124/72 mm Hg for men, and 121/70 mm Hg in women. It rose by age and was significantly higher in Black people.
The researchers found the following breakdown by age, sex, and race or ethnicity:
| Blood Pressure by Age |
|---|
As the population ages and life expectancy increases, high blood pressure is becoming more common.
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Monitoring Blood Pressure at Home
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Aap Pediatric Hypertension Guidelines
IMPORTANT
This tool has been developed in partnership with the American Academy of Pediatrics. The authors, editors, and contributors are expert authorities in the field of pediatrics. No commercial involvement of any kind has been solicited or accepted in the development of the content of this tool. Advertising does not influence editorial decisions or content. The appearance of advertising on MDCalc sites is neither a guarantee nor an endorsement by the AAP of the product, service, or company, or the claims made for the product in such advertising.
INSTRUCTIONS
Use in children aged 1-17 years. Not for use in patients with low blood pressure. Recommendations are based on AAP’s 2017 Clinical Practice Guideline . Note that cutoffs reported in the calculator may vary slightly from the published tables, as the calculator accommodates for ages between whole numbers , and the tables use simplified values to account for ages between whole numbers. For children 13 years of age, this calculator has been adjusted to meet definitions presented in the 2017 AHA/ACC hypertension guidelines for adults.
How Blood Pressure Is Tested
A device called a sphygmomanometer will be used to measure your blood pressure.
This usually consists of a stethoscope, arm cuff, pump and dial, although automatic devices that use sensors and have a digital display are also commonly used nowadays.
It’s best to sit down with your back supported and legs uncrossed for the test. You’ll usually need to roll up your sleeves or remove any long-sleeved clothing, so the cuff can be placed around your upper arm. Try to relax and avoid talking while the test is carried out.
During the test:
- you hold out one of your arms so it’s at the same level as your heart, and the cuff is placed around it your arm should be supported in this position, such as with a cushion or arm of a chair
- the cuff is pumped up to restrict the blood flow in your arm this squeezing may feel a bit uncomfortable, but only lasts a few seconds
- the pressure in the cuff is slowly released while a stethoscope is used to listen to your pulse
- the pressure in the cuff is recorded at two points as the blood flow starts to return to your arm these measurements are used to give your blood pressure reading
You can usually find out your result straight away, either from the healthcare professional carrying out the test or on the digital display.
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Pediatric Blood Pressure Calculator
The fourth report on the diagnosis, evaluation, and treatment of high blood pressure in children and adolescents
The pediatric blood pressure calculator will compute your child’s pediatric BP percentile for both their systolic and diastolic pressures. You will also find out whether the given value falls within the normal blood pressure range for children.
Follow our article below for more information on pediatric blood pressure percentiles, the formula used, and blood pressure charts for children.
*Disclaimer: We try our best to make our Omni Calculators as precise and reliable as possible. However, this tool can never replace professional medical advice.
High Blood Pressure Symptoms
High blood pressure is known as the silent killer because it typically has no symptoms. In fact, most people dont even realize they have hypertension until their blood pressure is monitored.
Symptoms dont develop until the numbers get very high and organs get damaged, often irreversibly, says Dr. Desai.
If you have severe hypertension, you might notice the below symptoms, some of which were reported by patients in a study in the British Journal of General PracticeGoodhart A. Hypertension from the patients perspective. British Journal of General Practice. 2016 66:570. :
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Blood Pressure Monitor Vs Blood Pressure Cuff
Blood pressure monitor and blood pressure cuff are two phrases often used to describe the same blood pressure measurement tool. The blood pressure cuff is the element that wraps around either the upper arm, wrist or finger to measure blood pressure. The blood pressure monitor is the element in charge of inflating and deflating the cuff, as well as providing your blood pressure reading on an easy-to-read display.
Most experts recommend using a blood pressure monitor with an upper arm blood pressure cuff for at-home readings because they tend to be more accurate than wrist cuffs and finger cuffs.
What Is Low Blood Pressure
While hypertension can be problematic for your overall health, blood pressure thats too low can also be cause for concern. With that said, the American Heart Association doesnt recognize a specific day-to-day blood pressure reading as too low. Instead, its a matter of what symptoms you may be experiencing due to low blood pressure, how these symptoms affect you and how long they persist.
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How To Use Blood Pressure Calculator
The blood pressure checker tool is very easy to use. All you need to do is record your readings and put it in the above form. Note that, you can measure your readings in mmHg as well as in kPa. You can select the unit from given options when entering the readings. To use this calculator, follow the below steps:
- Enter the systolic and diastolic bp first readings in the given input boxes.
- Enter the systolic and diastolic bp second readings in the respective input boxes.
- You can add as many reading as you want by clicking on the Add Reading
- After entering the values, press the Calculate button to get your final blood pressure.
The bp calculator calculates the average blood pressure after you hit the Calculate button. It also provides the systolic and diastolic blood pressure chart to indicate where your blood pressure is lying on the zone. You can also use our blood type calculator if you want to find out your blood type.
How To Take Your Blood Pressure
You can take your blood pressure at home using a blood pressure monitor and use the blood pressure calculator as guidance on what your reading means. Ensure the monitor has been clinically validated. Find a list of blood pressure monitors available for home use on the British and Irish Hypertension Society website.
- Sit quietly and comfortably on a chair with legs uncrossed and feet flat on the ground with an even surface in front of you.
- Place your arm on the surface in front of you so that it is supported level with your heart. Remove tight clothing and wrap the cuff around your upper arm.
- Activate the blood pressure monitor, the cuff will inflate to restrict the blood flow in your arm is it gauges your blood pressure. This will last for a short time.
- As the cuff deflates, your reading is displayed on the monitor. Enter the two numbers into the blood pressure checker to determine the health of your reading.
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Choosing A Blood Pressure Monitor
If you’re planning to take your blood pressure at home, it’s important to have a reliable blood pressure monitor. The AHA recommends an automatic, cuff-style, bicep monitor, but there are other options.
When selecting a blood pressure monitor, consider the following:
- Fit: To ensure a proper fit, measure around your upper arm and choose a monitor that comes with the correct size cuff.
- Number of people: If more than one person will be using the monitor, make sure to choose one that fits everyone.
- Features: Some blood pressure monitors offer extra tech features, like Bluetooth and app connectivity. If you don’t think you’ll benefit from these extras, go ahead and choose one that is efficient, easy to use, and more affordable.
- Budget: High-quality blood pressure monitors vary dramatically in price, from around $25 to well over $100. Keep in mind that a good monitor is a great investment and that you will be using it daily for several years.
- Other considerations: The AHA notes that when selecting a blood pressure monitor for a senior, pregnant person, or child, you should make sure it is validated for these conditions.
If you need help selecting an at-home device, check out these blood pressure monitors, which were vetted by the Verywell team based on the above criteria.
What Do Blood Pressure Numbers Mean
Blood pressure readings are composed of two numbersfor example, 120/80 mm Hg. Both numbers are an important part of your blood pressure reading.
The top number measures the pressure in your arteries when your heart beats. The bottom number measures the pressure in your arteries between each heart beat.
The standard unit of measure, mm Hg, stands for “millimeters of mercury.” Mercury pressure gauges have been replaced with electronic pressure gauges, but the abbreviation is still used.
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When Should I Get My Blood Pressure Tested
You can ask for a blood pressure test if you’re worried about your blood pressure at any point.
You can get your blood pressure tested at a number of places, including:
- at your local GP surgery
- at some pharmacies
- at an NHS Health Check appointment offered to adults in England aged 40-74
It’s recommended that all adults over 40 years of age have their blood pressure tested at least every five years so any potential problems can be detected early.
If you’ve already been diagnosed with high or low blood pressure, or you’re at a particularly high risk of these problems, you may need to have more frequent tests to monitor your blood pressure.
Normal Range Of Blood Pressure Age Blood Pressure Calculator
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When To Call Your Healthcare Provider
A hypertensive crisisdefined as blood pressure above 180/120 mm Hgrequires immediate medical attention. Call 911 if you are also experiencing symptoms such as chest pain, back pain, shortness of breath, difficulty speaking, a change in vision, weakness, or numbness.
Printable Average Blood Pressure Reading Chart
Printable Average Blood Pressure Reading Chart.
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Heart Age Calculator: Find Your Heart Age With This Simple Calculation
PintrestFind out your heart ageWhat is your sex?
What is your LDL cholesterol level?
What is your HDL cholesterol level?
Do you smoke?
Have you ever had diabetes?
What is your blood pressure level?
Calculate all the points:
| Male | ||
| Risk of heart disease in the next 10 years | Total points | Risk of heart disease in the next 10 years |
| < -3 | ||
| > 32% |
How is heart age calculated?What determines heart age?AgeBlood pressureCholesterol levelLifestyle habitsAre heart age calculators absolute?Disclaimer: The heart age scores are based on Framingham risk algorithm and the points have been sourced from the website of the Massachusetts General Hospital.
Measuring Your Blood Pressure
Healthcare professionals use a stethoscope and a manual sphygmomanometer to measure your blood pressure. Typically, they take the reading above your elbow. The sphygmomanometer has a bladder, cuff, bulb, and gauge. When the bulb is pumped, it inflates the bladder inside the cuff wrapped around your arm. This inflation will stop the blood flow in your arteries.
The stethoscope is used to listen for the sound of the heartbeat, and no sound indicates that there is no flow. As the pressure is released from the bladder, you will hear the blood flowing again. That point becomes your blood pressure systolic reading. The diastolic reading is when you hear no sound again, which means the blood flow is back to normal.
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Side Effects 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.
When To Call Your Doctor
The risks of both high and low blood pressure make monitoring your blood pressure at home essential to your overall health and well-being. Both Dr. Wong and Dr. Desai recommend calling your healthcare provider if your self-monitored blood pressure readings are greater than 180/120 mmHgeven if you have no other symptoms.
You should call 911 if these blood pressure readings are associated with symptoms of organ damage, such as headache, vision changes, weakness, numbness, chest pain or shortness of breath, says Dr. Wong.
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Blood Pressure Chart: High Low Normal Readings
Published: 2017-11-19 – Updated: 2022-08-27Author: Disabled World | Contact: Disabled World Peer-Reviewed Publication: N/AJump to:Definition: Blood Pressure | Main Digest
Synopsis:Our Blood pressure chart shows if adults and children have high, low, or normal blood pressure according to their age. When blood pressure measurements are written, both numbers are written as one above – or before – the other, with the systolic reading being the first number and the diastolic blood pressure measurement the second number, for example, 120/75 . Systolic Pressure is the blood pressure reading when your heart beats. This reading is always the first or top number. Diastolic Pressure is blood pressure measurement when your heart relaxes. This is always the second or bottom number.
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