Hypertension also called high blood pressure or BP is a common condition in which the long-term force of the blood against artery walls leads to health ailments, such as heart problems. Also known as ‘THE SILENT KILLER’, high blood pressure is asymptomatic as it can quietly cause damage to the cardiovascular system. As you read, you will get to know what hypertension actually is and how it is caused.
What is hypertension?
As per WHO, Hypertension, also known as high or raised blood pressure, is a condition in which the blood vessels have persistently raised pressure. Blood is carried from the heart to all parts of the body in the vessels. Each time the heart beats, it pumps blood into the vessels. Blood pressure is created by the force of blood pushing against the walls of blood vessels (arteries) as it is pumped by the heart.
The higher the pressure, the harder the heart has to pump.
A blood pressure reading is given in millimeters of mercury (mm/Hg). It has two numbers.
1. Top number (systolic pressure) :
The first, or upper, number measures the pressure in your arteries when your heart beats.
2. Bottom number (diastolic pressure) :
The second, or lower, number measures the pressure in your arteries between beats.
Different ranges of blood pressure.
Normal blood pressure = Between 90/60 mmHg and 120/80 mmHg.
At risk = Systolic: 120–139 mmHg, Diastolic: 80–89 mmHg.
High Blood Pressure = Systolic: 140 mmHg or higher, Diastolic: 90 mmHg or higher.
Symptoms:
Most people who have high blood pressure have no signs and symptoms, even if their reports show high levels of blood pressure. But here are some that are normally seen in people suffering from hypertension but are not so specific and don’t usually occur until the condition has reached a life-threatening stage.
- Headache
- Shortness of breath
- Nosebleeds
Causes:
There are mainly two types of high blood pressure.
Essential Hypertension
It doesn’t have a known secondary cause and is also known as primary hypertension. Genetic factors are thought to play a crucial role here. Diet, stress, lack of physical activity, and being overweight are some common risk factors. There are no specific symptoms of essential hypertension and it tends to develop gradually over many years.
Secondary Hypertension
It is caused by another condition or disease and it tends to appear suddenly. There are many reasons that can lead to secondary hypertension:
- Kidney disease.
- Adrenal gland tumours.
- Thyroid problems.
- Certain medications like antidepressants including desipramine, and venlafaxine.
Consequences
When your blood is pushing too hard against your arteries, it can lead to an array of problems that ultimately will damage the entire circulatory system. Sometimes it could lead to heart attack, kidney damage, stroke, aneurysm, heart failure, vision loss, peripheral artery disease, metabolic syndrome, and trouble with thinking or remembering things.