health

Explain why ventricular fibrillation is life threatening Plaque is made up of cholesterol , fats , and other substances that accumulate in the coronary arteries making it harder and thicker . Blood clot forms when plaque breaks . Clots block the coronary artery that supplies blood to the heart . This circumstance is a heart attack . Heart attack is the most expected cause of ventricular fibrillation . The heart muscle , deprived of blood , begins to break down and the electrical signals are interrupted

A dised electrical activity of the heart characterizes a ventricular fibrillation . In this condition

, the contraction , or beating , of the ventricles is not synchronized . Movements of the ventricular muscles are rapid and inconsistent . Consequently , ejection of blood from the ventricles is minute or at all and , at this point , the pumping role of the heart is inadequate or lost

Ventricular fibrillation is life threatening because it is the primary cause of sudden cardiac death (SCD ) or sudden cardiac arrest . When the heart suddenly and unexpectedly losses its function , death of the person follows within moments if not treated immediately . Reduced mental awareness , coma , and nerve problems are some complications that have to be endured by those who survived . These complications are all life threatening

Both HDL and LDH are abbreviations for cardiac laboratory tests , but they are ed for different reasons . Why is each test ed

Triglycerides , cholesterol , and other lipids are moved to various tissues by proteins in the blood . These proteins are called lipoproteins . Accumulated excess cholesterol in the walls of blood vessels are absorbed and carried to the liver with the help of these high density lipoproteins (HDL . The excess cholesterol is broken down by the bile and removed from the body

The reason for testing HDL is to identify the level of risk from cardiovascular problems like stroke and heart attack and to measure the amount of HDL cholesterol in the blood . In general , the higher the value of HDL means lower chances of having a coronary disease . This is the reason why HDL is considered good ' cholesterol

Cells of body tissues like heart , liver , lungs , kidneys , brain , and skeletal muscles contain an enzyme called lactic or lactate dehydrogenase or LDH . This enzyme is in charge in the conversion of lactic acid in muscles into pyruvic acid which is a vital process in the production of cellular energy . The process of testing the level of LDH in the blood is called LDH isoenzymes . The reason for testing LDH is to determine tissue damage and its location . Since various tissues contain LDH , the test is not particular in determining extent of heart tissues only How does aspirin help heart patients

Aspirin or acetylsalicylic acid is known for its antithrombotic effect This means it can prevent blood from clotting easily in blood vessels This can largely reduce the incidence of death among heart patients

Briefly describe the pulmonary circulation

The flow of blood from the heart , to the lungs , and going back to the heart again briefly describes the pulmonary...