Over a
billion people worldwide have hypertension or high blood pressure. That means
it's pretty common to start by defining it. Typically, it's represented by two
numbers.
110mmHg/70mmHg
The top number is the systolic blood pressure, the arterial pressure when the heart contracts. The lower number is the diastolic blood pressure, which is the arterial pressure when the heart is relaxing or refilling. Most of the time, blood pressure is taken in the brachial artery in your upper arm because it is high there. It's high throughout all of the arteries. The guidelines for categorizing blood pressure have recently changed to reflect a growing body of evidence that shows even moderately high blood pressure can significantly increase your risk of developing heart disease.
Normal Systolic Blood Pressure;
It is
defined as less than 120 millimeters of mercury, and normal diastolic pressure
is less than 80 millimeters. Elevated systolic blood pressure is between 120
and 129 millimeters of mercury and less than 80 millimetres on the diastolic
side.
Stage
1 Hypertension
Between 130
and 139 millimeters of mercury on the systolic side and between 80 and 89
millimeters on the diastolic side.
Stage 2 Hypertension
It is defined as anything that's 140 millimeters of mercury or higher on the systolic side and 90 millimeters higher on the diastolic side.
Sometimes
you can have systolic or diastolic hypertension when one number is typical, and
the other is high. This is referred to as isolated systolic or diastolic
hypertension. Typically, systolic and diastolic pressures tend to rise or fall
together, but that's not always the case.
High Blood Pressure;
It is a
severe problem for the blood vessels because it causes wear and tear on the
endothelial cells that line the blood vessel inside, like a garden hose
always under higher pressure. In the long term, blood vessels can develop tiny
cracks and tears, leading to severe problems like myocardial infarction,
aneurysms, and strokes.
Types of Hypertension
Primary Hypertension
About 90
percent of the time, hypertension happens without an identifiable underlying
reason, and we call this primary hypertension or essential hypertension. In
other words, over time, pressure in the artery starts to creep up silently.
We've identified many risk factors for primary hypertension, including old age,
obesity, salt-heavy diets, and sedentary lifestyles. These can be improved with
lifestyle changes, which can help reduce hypertension, except for periods.
Secondary
Hypertension
About 10
percent of the time, though, there is a specific, identifiable underlying
condition that's the cause of hypertension, which we call secondary
hypertension. For example, anything that limits the blood flow to the kidneys
or the renal blood flow can cause hypertension, such as atherosclerosis,
vasculitis, or aortic dissection. This is because the kidneys are essential for
blood pressure regulation. When insufficient blood flows to the kidney, it
secretes the hormone renin, which helps the kidneys retain more water. That
water contributes to more blood in the arteries, making them more full, and
leading to higher pressures.
Other
diseases can also cause secondary hypertension. Fibromuscular dysplasia, which
affects young women, can cause the walls of the large and medium-sized arteries
to thicken if it involves the renal artery and limits blood flow to the
kidneys, triggering more renin. Another example is a tumor that produces
excess aldosterone, and just like renin, this leads to fluid retention.
Hypertensive Crisis
If the blood
pressure gets high fast, it's referred to as a "hypertensive crisis."
It involves a systolic pressure greater than 180 millimeters of mercury, or
diastolic pressure greater than 120 millimeters of hypertensive mercury crisis
can be further split into hypertensive urgency and hypertensive emergency. In a
hypertensive crisis, there is evidence of harm to organs. End organs such as
the brain, kidneys, heart, and lungs have not yet been damaged due to
hypertensive urgency.
Symptoms
Usually,
primary hypertension isn't accompanied by symptoms, which is why it's sometimes
referred to as a "silent killer." Secondary
hypertension might involve a variety of symptoms associated with the underlying
cause, and finally, the hypertensive emergency might include symptoms
like
- Confusion
- Drowsiness
- Chest pain
- and breathlessness
Treatment
The first
choice for the treatment of hypertension is lifestyle changes, like changes to
diet, exercise, and stress reduction techniques. In addition, some
antihypertensive medications might also be given in some cases.
FAQs
What is blood pressure?
What is considered a normal blood pressure range?
What is considered high blood pressure?
What are the risks of having high blood pressure?
Can lifestyle changes lower high blood pressure?
How often should I have my blood pressure checked?
Can I check my blood pressure at home?
What should I do if my blood pressure is consistently high?
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