Maintaining a healthy blood pressure level is crucial for heart and organ function. High or low blood pressure levels, if not managed can lead to a variety of health problems. It is necessary to learn about blood pressure to comprehend how it affects your health properly.
What is Blood Pressure?
Blood pressure can be defined as the pressure or force that blood exerts on the walls of arteries while passing through our circulatory system. It is an important force because, without blood pressure, oxygen and nutrients would not be pumped around our circulatory system to nourish tissues and organs.
Blood pressure is also essential for the transportation of white blood cells and antibodies for immunity, as well as hormones like insulin.
The new blood provided can pick up the toxic waste products of metabolism, such as the carbon dioxide, which we exhale with every breath, and the toxins we remove through our liver and kidneys, which is just as crucial as giving oxygen and nutrition.
How is Blood Pressure measured?
Blood pressure is stated as a pair of equally essential figures, such as 120/80 mmHg. The top number represents the systolic pressure, which is the amount of pressure in the arteries during heart muscle contraction. The lowest value is the diastolic pressure, which is the blood pressure while the heart muscle is resting between beats.
A normal blood pressure level/reading is less than 120/80 mmHg.
What is Systolic Blood Pressure?
Systolic blood pressure measures the pressure in your arteries during your heartbeats. While both numbers in a blood pressure measurement are important for detecting and managing high blood pressure, doctors are most concerned with the top number, often known as systolic pressure.
Over time, studies have revealed that both figures are equally significant in monitoring heart health. However, most studies suggest that higher systolic pressures are associated with a higher risk of stroke and heart disease than raised diastolic pressures. This is especially true in adults over the age of 50, so doctors pay more attention to the top number. The difference in risk levels may be due to the stress exerted on the arteries when blood rushes out of the heart.
What is Systolic and Diastolic Pressure?
Systolic pressure refers to the maximum blood pressure at the time of contraction of the ventricles. The diastolic pressure refers to the minimum pressure noted down prior to the next contraction.
Let's discuss normal systolic and diastolic blood pressures. Under normal conditions, the diastolic blood pressure range is less than 80 and the systolic blood pressure range is less than 120. That is, the systolic BP normal range for most adults is less than 120 millimetres of mercury (mm Hg).
What is the difference between systolic and diastolic blood pressures?
Let's discuss systolic and diastolic blood pressures. The major difference between systolic and diastolic blood pressure lies when they happen in the heart's cycle. Systolic pressure occurs when your heart contracts and pumps blood throughout your whole body. Diastolic pressure happens when your heart relaxes between beats.
Facts about Systolic and Diastolic Blood Pressures
- Dangers of high diastolic blood pressure include heart disease, stroke, kidney damage, vision problems, aneurysms, and dementia.
- Symptoms of high diastolic blood pressure include headaches, chest pain, dizziness, shortness of breath, blurred vision, nosebleeds, anxiety, confusion, abnormal heart rhythm, and numbness or weakness.
What is Diastolic Blood Pressure?
Diastolic blood pressure measures the pressure in your arteries when your heart rests between beats or the pressure when the vessels relax between your heartbeats. Low diastolic blood pressure can cause heart damage and raise your risk of heart disease.
Blood Pressure Categories/Stages
Blood pressure measurements are classified into four groups, ranging from normal to high blood pressure (Hypertension).
| Blood pressure stages | Systolic (mm Hg) | Diastolic (mm Hg) |
| Normal | Less than 120 | Less than 80 |
| Elevated | 120-129 | Less than 80 |
Stage 1 - Hypertension High Blood Pressure | 130-139 | 80-89 |
Stage 2 - Hypertension High Blood Pressure | 140 or higher | 90 or higher |
| Hypertension Crisis | Higher than 180 | Higher than 120 |
How is Blood Pressure measured?
A sphygmomanometer is used to measure blood pressure. It comprises a rubber wristband - the cuff - that is inflated by hand or machine pump.
Once the cuff has been inflated sufficiently to halt the pulse, a reading is obtained, either electronically or on an analogue metre.
The reading is given in terms of the amount of pressure required to drive mercury along a tube against gravity. This explains why pressure is measured in millimetres of mercury, shortened as mm Hg.
Risk of High Blood Pressure (Hypertension)
High blood pressure or Hypertension adds more pressure on your blood vessels, heart and other organs such as the brain, kidneys and eyes.
Persistently high blood pressure can raise your risk of a variety of severe and sometimes fatal health issues, including :
- coronary heart disease
- coronary artery disease
- strokes
- failure of the heart
- disease of the peripheral arteries
- Aneurysms of the aorta
- kidney disorder
- Alzheimer's disease
If you have high blood pressure, even a little reduction can significantly lessen your risk of certain health problems.
Risk of Low Blood Pressure (Hypotension)
Low blood pressure condition occurs when blood pressure drops below the normal range. This life-threatening condition can occur as a result of severe Hypotension. Some early signs include confusion, especially in old-aged people. Other symptoms include:
- Dizziness or lightheadedness
- Nausea
- Blurred vision
- Cold, clammy and pallid skin
- Breathing is quick and shallow.
- The pulse is weak and fast.
Conclusion
Your blood pressure level dictates the type of treatment you may require. To obtain an accurate blood pressure reading, your doctor should average two or more blood pressure measurements taken during three or more visits.
According to the American Heart Association, high blood pressure is currently defined as 130/80 mm Hg or greater. This will significantly improve the survivability of thousands of patients who need to monitor and regulate their blood pressure.
While recording blood pressure measurements is a vital task that should be repeated for consistency and confirmation, not all cases of high blood pressure will require medical treatment. The new recommendations urge that you check your blood pressure frequently, preferably with a home monitor, to assist your doctor in determining if you need to make lifestyle changes, start medication or change your treatment.
FAQs
1) How to lower diastolic blood pressure?
Here are the ways to lower diastolic blood pressure.
- Lifestyle changes like dietary changes, regularly exercising, losing weight, managing stress, and limiting alcohol consumption.
- Consuming doctor prescribed medications.
2) What causes high diastolic blood pressure?
High diastolic blood pressure can be caused by a number of factors, including :
- Lifestyle like a lack of exercise, high-sodium diet, obesity, and more alcohol consumption.
- Stress and anxiety.
- A few medications like amphetamines, NSAIDs, antidepressants, oral contraceptive pills, etc.
- Some conditions, like obstructive sleep apnea, renal hypertension, and endocrine disorders,.
- Other risk factors include being younger than 50 and having a family history of hypertension.
- Smoking habit.
3) What does it mean when systolic is high and diastolic is low?
When your diastolic blood pressure is low and your systolic blood pressure is high, then the condition you face is called isolated systolic hypertension.
