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What Is Diastolic Blood Pressure Mean

Can Dehydration Cause High Diastolic Pressure

What is blood pressure? | Circulatory system physiology | NCLEX-RN | Khan Academy

Dehydration and High Blood Pressure High blood pressure refers to a systolic blood pressure above 130mmHg and diastolic blood pressure above 80mmHg. Studies have shown that dehydration can cause an increase in blood pressure, and a study conducted in rats recurrent dehydration can worsen hypertension.22 nov. 2021

Medications For High Blood Pressure

There are a variety of medications that can help manage high blood pressure. Again, medication is typically recommended when lifestyle changes dont produce results, and in more serious blood pressure cases like stage 1 or stage 2 hypertension. Medications for high blood pressure include:

  • Alpha, beta and alpha-beta blockersStop epinephrine and similar hormones from affecting the cardiovascular system, allowing the muscles of the heart and arteries to stay relaxed.
  • Angiotensin-converting enzyme inhibitorsStop the body from producing angiotensin, a hormone that narrows blood vessels.
  • Angiotensin receptor blockers Stop angiotensin from affecting blood vessels.
  • Calcium channel blockersHelp keep arteries relaxed by preventing calcium from entering heart and artery cells.
  • Central agonistsHelp control heart rate and blood flow by blocking signals between the brain and the nervous system.
  • DiureticsReduce excess sodium and water in the body.
  • Renin inhibitorsSlow the bodys production of the enzyme renin, which can play a role in high blood pressure.
  • VasodilatorsPrevent artery and vein muscles from narrowing.

When Is The Blood Pressure Too High

Blood pressures vary depending on the age of your child, as well as according to height and weight, and the gender of your child. Generally, blood pressure is low in infancy, and rises slowly as children age. Boys’ blood pressures are slightly higher than girls’ are, and taller people generally have higher blood pressures than short people do.

For example, an infant may have a quite normal blood pressure of 80/45 mm Hg, while that value in an adult is considered low. A teenager may have an acceptable blood pressure of 110/70 mm Hg, but that value would be of concern in a toddler.

The National Heart, Lung, and Blood Institute has prepared a series of age- and gender-specific blood pressure measurement tables for children ages 3 through 17 years, based on percentiles. A range of blood pressure values is given based on how old and how tall your child is. According to the tables, if your child has a blood pressure that is higher than 90 to 95 percent of other boys or girls his or her age and height, then he or she may have high blood pressure.

Again, many factors, including emotions, can affect blood pressure. Readings that are high compared to the values on the table may need to be investigated further by your child’s doctor.

The prevalence of hypertension and obesity in children age 8 to 17 has increased in all racial and ethnic groups since 2002.

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Where Can I Learn How To Take My Blood Pressure Myself

In Germany and other countries, people with high blood pressure can attend patient education courses that teach a number of things, including how to measure your blood pressure. As part of specialized disease management programs for people who have narrow coronary arteries , statutory health insurers offer additional healthcare services. These include patient education about high blood pressure. Some doctors practices don’t offer these courses, though.

Reading Between The Lines


With the basic definitions out of the way, lets talk numbers. Where do you want them? What does it mean if one is high and the other is low, or any other weird combinations?

Simply put, anything below 120/80 is considered in the normal range. Unless of course its way lower, which gets into the low blood pressure range, and is a discussion for a different blog post. Anything higher than 130/80 falls into hypertension territory.

You may have noticed a 10-point gap between normal and hypertension. Thats because 120-129 systolic, with a sub-80 diastolic reading is considered elevated.

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How Is High Blood Pressure Diagnosed

Since high blood pressure doesnt have symptoms, your healthcare provider will need to check your blood pressure with a blood pressure cuff. Providers usually check your blood pressure at every annual checkup or appointment. If you have high blood pressure readings at two appointments or more, your provider may tell you that you have high blood pressure.

Which Blood Pressure Number Is Important

Q.When I am monitoring my blood pressure, which number is most important top, bottom, or both?

A. While both numbers in a blood pressure reading are essential for diagnosing and treating high blood pressure, doctors primarily focus on the top number, also known as systolic pressure.

Systolic pressure reflects the force produced by the heart when it pumps blood out to the body, while diastolic blood pressure is the pressure in your blood vessels when the heart is at rest.

Over the years, research has found that both numbers are equally important in monitoring heart health. However, most studies show a greater risk of stroke and heart disease related to higher systolic pressures compared with elevated diastolic pressures. That’s especially true in people ages 50 and older, which is why doctors tend to monitor the top number more closely. The reason for the difference in risk may be related to the force put on the arteries when blood rushes out of the heart.

The American Heart Association now defines high blood pressure as 130/80 mm Hg or higher. The new guidelines recommend you check your blood pressure often, ideally with a home monitor, to help your doctor determine if you need to make lifestyle changes, begin medication, or alter your current therapy.

by Howard LeWine, M.D.

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What Factors Lead To Increased Blood Pressure

This change may cause your bodys blood pressure to increase. Environment: Over time, unhealthy lifestyle choices like lack of physical activity and poor diet can take their toll on your body. Lifestyle choices can lead to weight problems. Being overweight or obese can increase your risk for hypertension.

Measuring Blood Pressure With A Sphygmomanometer

Don’t ignore diastolic blood pressure

A sphygmomanometer has three parts:

  • a cuff that can be inflated with air,
  • a pressure meter for measuring air pressure in the cuff, and
  • a stethoscope for listening to the sound the blood makes as it flows through the brachial artery .

The scale of the pressure meter ranges from 0 to 300 mmHg. The pressure meter has a rubber pump on it for inflating the cuff and a button for letting the air out.

To measure blood pressure, the cuff is placed around the bare and stretched out upper arm, and inflated until no blood can flow through the brachial artery. Then the air is slowly let out of the cuff.

As soon as the air pressure in the cuff falls below the systolic blood pressure in the brachial artery, blood will start to flow through the arm once again. This creates a pounding sound when the arteries close again and the walls of the vessels hit each other after a heart beat. The sound can be heard by placing the stethoscope close to the elbow. Right when you start to hear this pounding for the first time you can read your systolic blood pressure off the pressure meter.

The pounding sound stops when the air pressure in the cuff falls below the diastolic blood pressure in the brachial artery. Then the blood vessels remain open. Right when the pounding stops, you can read the diastolic blood pressure off the pressure meter.

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What Causes High Diastolic Blood Pressure

Having a diastolic number consistently high is going to bring up some common questions. Youre probably wondering, why is my bottom blood pressure number high?

The bottom blood pressure number can be high for the following reasons:

  • Cortisol is released.
  • Certain pain medications can raise blood pressure and reduce the effect of blood pressure medication.

In studies, pain has been shown to increase diastolic blood pressure by 10 mmHg. After the pain was relieved, diastolic blood pressure returned to normal 6.

Obesity and excess weight have been linked to an increased risk of cardiovascular disease and high blood pressure.

An unhealthy diet leads to excess weight and obesity. In addition, it contains high sodium, added sugar, saturated and trans fats 7.

In addition to increasing diastolic blood pressure, regular use of excess alcohol and illegal drugs can cause heart failure, stroke and an irregular heartbeat 8.

Smoking can temporary increase blood pressure. In the long-term, it can contribute to damaged blood vessels which affect blood pressure 9.

Sleep apnea may increase the risk of developing high blood pressure and is common in people with resistant hypertension.

What Is Normal Blood Pressure And When Is Blood Pressure Considered To Be High

Blood pressure is always measured on a number of different days and when you are at rest. If several of these measurements are too high, you are said to have high blood pressure, even if only one of the two either the systolic or the diastolic one is high. The medical term for high blood pressure is hypertension. In adults, blood pressure is considered to be normal under a systolic value of 140 mmHg and under a diastolic value of 90 mmHg.

When taking your blood pressure for the first time, it makes sense to measure the blood pressure in both arms, because it’s sometimes high on only one side. The values that are higher are always the ones used for assessing blood pressure. After that it is enough to measure the blood pressure only in the arm that produced the higher reading. A person is considered to have high blood pressure if the systolic value is over 140 mmHg, the diastolic value is over 90 mmHg, or if both are higher than these readings.

Table: Normal and high blood pressure readings

systolic over 140 mmHg and/or diastolic over 90 mmHg

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Why Do I Need A Blood Pressure Test

A blood pressure measurement is often included as part of a regular checkup. Adults 18 years and older should have their blood pressure measured at least once every two to five years. You should get tested every year if you have certain risk factors. You may be at higher risk if you:

  • Are 40 years old or older
  • Are overweight or have obesity
  • Are Black/African American. Black/African Americans have a higher rate of high blood pressure than other racial and ethnic groups

You may need this test if you have symptoms of low blood pressure.

What Is The Diastolic Cut Off Point

What Is Diastolic Blood Pressure

When the DBP drops below a certain value, perhaps at approximately 65 mm Hg , cardiovascular events increase, but what is the reason?26 Others state that the cut off point is approximately 70-80 mm Hg, which may actually increase mortality in those with coronary artery disease.29 Another study places the turn-around BP value at less than 60 mm Hg.30The European guidelines comment that a similar J-curve phenomenon occurs in placebo-treated groups of several trials.31 Also noted is that several post hoc analyses consistently showed that the nadir of cardiovascular outcome incidence had a rather wide range, between 120 and 140 mm Hg SBP and between 70 and 80 mm Hg DBP, and that within this low BP range the differences in achieved cardiovascular protection are small .32

What practical policy must be followed if the proposed critical DBP of 65 mm Hg is reached? Presumably but without trial data, the BP-lowering medication should be reduced when the diastolic BP drops to less than 65 mm Hg until the level rises to 65-70 mm Hg. That leaves the likely increase in systolic BP to look after itself. A few outcome studies would be helpful.

Gabriel B. HabibSr. MD MS FACC FAHA FCCP, in, 2010

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High Blood Pressure Risk Factors For Black People

Being Black is a risk factor for developing high blood pressure. Others include:

  • Lots of salt and fat in your diet
  • Not getting enough potassium

The more risk factors you have, the more likely it is that you have high blood pressure or will get it in the future. Take steps now to find out more. Even if you don’t have high blood pressure, you can lower your risk by following the treatment guidelines for high blood pressure in Black people.

What Are Other Ways I Can Lower My Blood Pressure

In addition to taking medicine to control your blood pressure, you can take other steps to help keep your blood pressure levels healthy.

  • Get regular physical activity. Staying physically active is one of the best things you can do for your health. Physical activity helps keep your heart and blood vessels strong. It also can help you keep a healthy weight.
  • Do not smoke. Smoking damages your blood vessels and greatly increases your risk of not only high blood pressure but also heart disease, heart attack, and stroke.
  • Eat healthy foods. Choosing healthy meal and snack options can help you avoid high blood pressure and its complications. Be sure to eat plenty of fresh fruits and vegetables.
  • Keep a healthy weight. Having overweight or obesity means your heart must work harder to pump blood and oxygen around the body. Staying at a healthy weight reduces the stress on your heart and reduces your risk for heart disease, heart attack, and stroke.

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What Is Ambulatory Blood Pressure Monitoring

If a doctor recommends ambulatory blood pressure monitoring, you will need to wear a blood pressure cuff for 24 hours. It’s connected to a small, portable measuring device that automatically measures your blood pressure at set times and records the readings.

Ambulatory blood pressure monitoring is used, for example, to see whether blood pressure levels vary greatly over the course of the day and night or whether they are constantly elevated. During those 24 hours, you can do all of the usual things you would otherwise do over the course of the day. If you are especially active at certain times, you can make a note in a diary. Then the doctor has a better idea of how to interpret the recorded values when evaluating them.

What Can I Do To Lower My Blood Pressure

Which Blood Pressure Reading is More Important, Systolic or Diastolic?

There are things we can all do to help control blood pressure. These lifestyle modifications are changes you can make in your daily life.

  • Follow the Dietary Approaches to Stop Hypertension, or DASH diet. This includes fruits, vegetables, whole grains, and low-fat dairy products with reduced saturated and total fat.
  • Increase your physical activity. Add 90 to 150 minutes each week of aerobic exercise. Also, include three days of strength training each week. Not only can this help reduce or control your blood pressure, but it can also help with weight management. In overweight individuals, a weight loss of even five to 10 percent has been shown to reduce blood pressure.
  • Limit your alcohol. It is recommended that men have no more than two drinks per day and women have no more than one to help control blood pressure.
  • Manage your stress. Because stress can have a major impact on our bodies, it is important to have an effective coping technique. There are many techniques for relaxation.
  • If you smoke, quit. Quitting smoking can have a huge impact on your health.

These are some of the most proactive ways one can support a normal blood pressure and an overall healthy life. But sometimes, even a healthy lifestyle is not enough to maintain a safe blood pressure. When lifestyle modifications do not lower blood pressure to better levels, medication can be prescribed.

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Normal Diastolic Blood Pressure

What is the normal range of diastolic pressure for adults? A normal range of diastolic blood pressure for adults is 60 mmHg to 79 mmHg.

If diastolic is less than 80 mmHg and systolic is less than 120 mmHg, a doctor will typically suggest the following:

  • Follow a heart healthy diet.
  • Engage in regular physical activity.
  • Continue avoiding unhealthy habits like excess alcohol or smoking.
  • Monitor blood pressure readings.
  • Attend regular physicals.

Treating Low Blood Pressure

Treatment for low blood pressure depends on the cause of the condition.

If a medication is causing your low blood pressure, your doctor may change your dosage of that drug or stop your treatment with it.

If your low blood pressure is caused by an infection, your doctor might prescribe an antibiotic to treat the infection. Or if its caused by anemia, your doctor may prescribe iron or vitamin B-12 as a supplement.

If a medical condition or disease is causing your low blood pressure, its important for your doctor to identify the specific cause. Proper management of the problem can help improve or limit episodes of low blood pressure.

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Garlic And Garlic Milk

Considered one of the most effective natural remedies for diastolic hypertension. It is good for thrombosis, hardening of the arteries, and high blood cholesterol. Using fresh garlic is best. You can also make garlic milk by heating half a liter of water and milk and boil 10 garlic cloves in it. When it cools off, you can add some honey to it before drinking.

What Is Mean Arterial Pressure

My Biomedical Notebook: Cardiovascular Function and dysfunction

Automatic blood pressure monitors give you a systolic and diastolic blood pressure reading. Many of them also include a small number in parentheses underneath or beside your standard blood pressure reading. This number in parentheses is the mean arterial pressure .

MAP is a calculation that doctors use to check whether theres enough blood flow to supply blood to all your major organs. Too much resistance and pressure may impede that flow.

Resistance refers to the way the width of a blood vessel impacts blood flow. For example, its harder for blood to flow through a narrow artery. As resistance in your arteries increases, blood pressure also increases while the flow of blood decreases.

You can also think of MAP as the average pressure in your arteries throughout one cardiac cycle, which includes the series of events that happen every time your heart beats.

Keep reading to learn more about the normal, high, and low ranges of MAP and what they mean.

1/3+2/3 .

In some cases, in the hospital, a doctor may place a central line in a person and use that to determine the values of cardiac output, central venous pressure, and systemic vascular resistance. They may then use these other values to calculate a persons MAP. However, an actual calculation is not always necessary as there is typically a machine that also provides the MAP reading automatically.

You can also calculate a MAP value automatically here.

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