Posts Tagged ‘heart attacks’
Cholesterol: What Do We Know
The heart pumps blood through blood vessels called arteries and the blood carries vital oxygen with nutrients needed by tissues and organs throughout the body.
When cholesterol levels are above normal limits and stay high, some remains of cholesterol are deposited in the arteries and through the years, they are hardened by a fatty substance called cholesterol plaque that accumulates on the walls of the arteries and reduces or blocks blood flow.
The organs supplied by these arteries are damaged because they can not get oxygen and nutrients by limiting blood flow through the arteries, so for example, when blood flow to the brain is blocked, there is a stroke or plaque completely blocks a coronary artery, is when we are in the presence of a heart attack.
Cholesterol in the body comes from two sources, most of it is produced by the liver from various nutrients and especially saturated fat.
The liver produces almost all the cholesterol Read the rest of this entry »
Medical Information about Heart Attacks
Why watch sports on television increases the occurrence of heart attacks, one study found that games that are much stress raise blood pressure among those who have already suffered a heart attack
Chinese researchers report that a lower blood flow to the heart may help explain why men who have suffered a heart attack are at greater risk of another while watching exciting sports events.
The study involved 38 men who survived a heart attack that saw the Olympic Games competitions and other live entertainment programs on television. While men were the programs, we evaluated the blood flow in the coronary artery to the heart through analysis of ST segment through a continuous 12-lead electrocardiography, blood pressure monitoring and heart rate measures.
In general, the flow of blood to the heart was stable. But when men watched an exciting sporting event, increased blood pressure, reduced the heart rate variability and increased platelet aggregation (the basic element of clots). All these factors raise the risk of heart attack.
The study was presented Monday at the annual meeting of the American Heart Association in Orlando, Florida.