One of the first things that a nurse does when you visit the doctor is check your blood pressure. But what is blood pressure?
Blood pressure is basically the pressure of the blood as it travels through the circulatory system. Blood pressure is the pressure that is exerted by the circulating blood upon the walls of blood vessels. It is one of the signs of vital health.
The blood pressure is an importance diagnostic tool, as it immediately correlates with the health of the circulatory system. The blood pressure varies with the strength of the heartbeat, the elasticity of the arterial walls, the volume and viscosity of the blood, and a person’s health, age, and physical condition. Hence, it can tell the doctor if all these are in normal health or is there something wrong with any one oft hose aspects.
The blood pressure is taken by using a device that is attached to a person’s upper arm. The device is then pumped with air, and then calculates the pressure of the air against the pressure on the blood. A person’s blood pressure is usually expressed in terms of the systolic pressure over diastolic pressure and is measured in millimeters of mercury (mm Hg). Normal resting blood pressure for an adult is approximately 120/80 mm Hg.
Blood pressure varies depending on situation, activity, and disease states. It is regulated by the nervous and endocrine systems, and a lower or higher blood pressure than normal can show that something is wrong with these systems. When blood pressure is very low, it is called hypotension, and when the blood pressure is very high is it called hypertension. Both have various causes and can range from mild to severe, with both acute and chronic forms. Chronic hypertension is a risk factor for many complications, including peripheral vascular disease, heart attack, and stroke.