Systolic pressure is the force of blood in the arteries as the heart beats. It is represented by the top number in a blood pressure reading on the blood pressure machine. To be considered high blood pressure the reading will be 140 or higher for systolic pressure. Diastolic pressure is the force of blood in the arteries as the heart relaxes between beats. It is represented as bottom number in a blood pressure reading.
When blood pressure is high, it starts to damage the blood vessels, heart, and kidneys. This can lead to heart attack, stroke, and other problems. High blood pressure is called a “silent killer,” because it doesn’t usually cause symptoms while it is causing this damage. Your blood pressure consists of two numbers: systolic and diastolic. Someone with a systolic pressure of 120 and a diastolic pressure of 80 has a blood pressure of 120/80, or “120 over 80.” * The systolic number shows how hard the blood pressure pushes when the heart is pumping.
Way sodium excretion affects pressure can be described as follows: if the kidney requires high pressure to excrete a given load of salt, then, at lower pressures, sodium and water are retained, and the blood volume rises. An increased blood volume returns more blood to the heart, thereby increasing cardiac output. The increased output is sensed by the peripheral vessels, which do not like increased flow and constrict in response, and auto regulation increases arterial resistance. The reverse occurs when the pressure rises: more salt and water are excreted, and that lowers blood volume, which reduces cardiac output. Sensing lesser flow, arterioles auto regulates by dilating, which reduces peripheral resistance.
Treatments can be considered as preventions as well. Medicines to treat CAD include Lipid therapy, antihypertensive, and anti platelets. Lipid therapy consists of maintaining an LDL less than 100mg per dl. High blood cholesterol, a waxy, fat-like substance, builds up in the arteries. The higher the blood cholesterol level is the greater risk.
What are your risk factors? Are your blood pressure readings within the normal blood pressure range? Should you take anti-hypertension medication to lower your blood pressure? Normal human daily Blood Pressure Range can vary widely, so any single blood pressure monitor reading is not reliable. BP monitor readings must be taken at different times of day, to determine AVERAGE blood pressure over time.
The heart must then pump harder because the arterioles are exerting a greater resistance to blood flow. Blood pressure is measured at two points, a high point and a low point. The high point is the point at which the heart contracts to empty its blood into the circulation, called systole. The low point is the point at which the heart relaxes to fill with blood returned by the circulation, called diastole. High blood pressure is often called the "silent killer".
1) Coronary artery disease occurs when fatty deposits called plaque build up inside the coronary arteries. The coronary arteries wrap around the heart and supply it with blood and oxygen. When plaque builds up, it narrows the arteries and reduces the amount of blood that gets to your heart. This can lead to serious problems, including heart attack. 2) Coronary artery disease is usually caused by a build-up of fatty deposits on the walls of the coronary arteries.
Coronary Artery Disease (CAD) or also referred to as Coronary Heart Disease (CHD), a heart disease that develops when your coronary arteries, the major blood vessels that supply your heart with blood, oxygen and nutrients become damaged. CHD is a term used commonly for buildup of plaque in the hearts arteries that could lead to heart attack. Cholesterol containing deposits, also known as plaque on your arteries is to blame for CAD. With CAD, the plaque starts to first grow in the coronary arteries until blood flow to the heart’s muscle becomes limited, in other words, ischemia. It could be chronic and is caused by the narrowing of the coronary artery and limitation of blood supply to part of the muscle.
It then helps to pump blood around the body, to supply tissues with oxygen and nutrients and to transport waste products away from the tissues. The blood vessels of three different types which are the capillaries, veins and arteries. The Arteries: * Carry blood away from the heart (always oxygenated apart from the pulmonary artery which goes to the lungs) * Have thick muscular walls * Have small passageways for blood (internal lumen) * Contain blood under high pressure The Veins: * Carry blood to the heart (always de-oxygenated apart from the pulmonary vein which goes from the lungs to the heart) * Have thin walls * Have larger internal lumen * Contain blood under low pressure * Have
One realizes the importance of understanding the circulation system when you consider the fact that impairment to blood supplies is the leading cause of lesions in the central nervous system. It is also important to have knowledge of the distribution of blood in the brain via the various branches, since any interruption in the blood supply is often associated with characteristic neuropsychological signs and symptoms. Blood transports oxygen and other nutrients necessary for the health of neurons, so a constant flow of blood to the brain must be maintained. 1.1 SUBCLAVIAN ARTERY: The main artery of the body is called the aorta. It supplies blood to all parts of the body with the exception of the lungs.