Introducation of Blood Pressuer

Blood Pressure is the pressure that blood exerts on the wall of the blood vessels. The pressure originates in the contraction of the heart, which forces blood out of the heart and into the blood vessels. The concept is more mechanical than biochemical.

There are two mechanisms that take place in the heart, diastole and systole. Diastole is the relaxation of the chambers of the heart whereas systole is the contraction of the heart chambers. Therefore, the systolic pressure will show the pressure that your heart when blood is forced out of the heart, while diastolic pressure is the pressure exerted when the heart is relaxed. This is the main mechanism by which blood pressure operates.

Blood pressure (BP) is the pressure exerted by circulating blood upon the walls of blood vessels, and is one of the principal vital signs. When used without further specification, "blood pressure" usually refers to the arterial pressure of the systemic circulation. During each heartbeat, blood pressure varies between a maximum (systolic) and a minimum (diastolic) pressure. The blood pressure in the circulation is principally due to the pumping action of the heart. A normal blood pressure should be around 120/80 to be accounted for at a safe level , with 120 being measured through systole, and 80 through diastole.

Blood pressure are responsible for blood from one location to another in the circulation. The rate of mean blood flow depends on the resistance to flow presented by the blood vessels. Mean blood pressure decreases as the circulating blood moves away from the heart through arteries, capillaries and veins due to viscous losses of energy. Mean blood pressure drops over the whole circulation, although most of the fall occurs along the small arteries and arterioles.

Symptoms of high blood pressure

Most people with high blood pressure will not experience any symptoms until levels reach about 180/110 mmHg.

• High blood pressure symptoms :.
• Nausea - a sensation of unease and discomfort in the stomach with an urge to vomit.
•  Vomiting - less common than just nausea.
• Dizziness - Lightheadedness, unsteadiness
• Epistaxis - nosebleeds.
•  Palpitations - disagreeable sensations of irregular and/or forceful beating of the heart.

Blood pressure signs and symptoms:

•  Headache.
•  Blurred vision.
• Nose bleeding
•  Failure to thrive.
• Seizure.
• Irritability.
• Lethargy.