Blood pressure is the force that moves blood through the circulatory system. Without blood pressure, oxygen and nutrients would not be pushed around the circulatory system to nourish tissues and organs.
Blood pressure is also important because it transports white blood cells, antibodies, and insulin-like hormones.
In addition to providing oxygen and nutrients, fresh blood can pick up toxic waste products of metabolism, such as the carbon dioxide we exhale with every breath and the toxins we clear through the liver and kidneys.
Blood carries a variety of other properties, including temperature. It also contains one of the tissues’ defenses, clotting platelets, which prevent blood loss after injury.
But what exactly causes blood pressure
The heart generates blood pressure by forcing blood out with each heartbeat. Blood pressure cannot be produced solely by a heartbeat.
A blood pressure monitor or blood pressure gauge is a device used to measure blood pressure that consists of an inflatable cuff that collapses and then releases the artery beneath the cuff in a controlled manner, as well as a mercury or aneroid manometer to measure the pressure. When using the auscultator technique, a manual sphygmomanometer is used in conjunction with a stethoscope.
What is Normal Blood Pressure?
Blood pressure readings less than 120/80 mm Hg are considered normal. If your results fall into this category, stick to heart-healthy habits like eating a balanced diet and getting regular exercise.
What is High Blood Pressure (Hypertension)?
High blood pressure, also known as hypertension, is characterized by blood pressure that is higher than normal. Your blood pressure fluctuates throughout the day as a result of your activities. Having blood pressure readings that are consistently higher than normal may lead to a diagnosis of high blood pressure (or hypertension).
Hypertension (high blood pressure) and high cholesterol are linked. Cholesterol plaque and calcium cause artery hardening and narrowing. As a result, your heart must work much harder to pump blood through them. As a result, your blood pressure rises to dangerously high levels.
The higher your blood pressure, the greater your risk of developing other health issues such as heart disease, heart attack, and stroke.
High blood Pressure Symptoms
High blood pressure usually has no warning signs or symptoms, and many people are unaware they have it. Only by measuring your blood pressure can you determine whether you have high blood pressure.
A sphygmomanometer, also known as a blood pressure monitor or blood pressure gauge, is a device used to measure blood pressure that consists of an inflatable cuff that collapses and then releases the artery beneath the cuff in a controlled manner, as well as a mercury or aneroid manometer to measure the pressure. When using the auscultator technique, manual sphygmomanometers are used in conjunction with a stethoscope.
Low Blood Pressure
A blood pressure reading of fewer than 90 millimeters of mercury (mm Hg) for the top number or 60 mm Hg for the bottom number is considered low blood pressure (diastolic).
What one person considers to be low blood pressure may be considered normal by another. Low blood pressure can cause no symptoms or it can cause dizziness and fainting. Low blood pressure can be fatal in some cases.
Low blood pressure can be caused by anything from dehydration to serious medical conditions. It is critical to determine what is causing low blood pressure so that it can be treated if necessary.
- Orthostatic Hypotension
This is a sudden drop in blood pressure after rising from a seated position or lying down. Dehydration, prolonged bed rest, pregnancy, certain medical conditions, and certain medications are among the causes. This type of low blood pressure is quite common in the elderly.
- Postprandial hypotension.
This blood pressure drop occurs 1 to 2 hours after eating. It is most likely to affect older people, particularly those with high blood pressure or autonomic nervous system diseases like Parkinson’s. Eating small, low-carbohydrate meals, drinking more water, and staying away from alcohol may help alleviate symptoms.
- Neurally mediated hypotension.
This is a drop in blood pressure that occurs after prolonged standing. This type of low blood pressure primarily affects adolescents and children. It could be caused by a breakdown in communication between the heart and the brain.
This rare disorder, also known as Shy-Drager syndrome, affects the nervous system, which controls involuntary functions such as blood pressure, heart rate, breathing, and digestion. It’s linked to having extremely high blood pressure while lying down.
Low Blood Pressure Symptoms
- Blurred or fading vision
- Dizziness or lightheadedness
- Trouble concentrating
Low blood pressure may be a sign of an underlying health condition in some people, especially if it drops suddenly or is accompanied by symptoms.
A change of only 20 mm Hg, such as going from 110 mm Hg systolic to 90 mm Hg systolic, can cause dizziness and fainting. Large drops, such as those caused by uncontrolled bleeding, severe infections, or allergic reaction, can be fatal.