A heart attack happens when the flow of oxygen-rich blood to a section of heart muscle suddenly becomes blocked and the heart can’t get oxygen. If blood flow isn’t restored quickly, the section of heart muscle begins to die.
Heart attacks are a leading killer of both men and women in the United States. The good news is that excellent treatments are available for heart attacks. These treatments can save lives and prevent disabilities.
Heart attack treatment works best when it’s given right after symptoms occur. If you think you or someone else is having a heart attack (even if you’re not fully sure), call9–1–1 right away.
There are four valves which control the blood flow through the heart. They all consist of two or three flaps which swing open to allow blood through with each heart beat, and swing closed to prevent blood going back in the wrong direction.
Deoxygenated (blue) blood returning from the body collects in the right atrium. It flows to the right ventricle through the ‘tricuspid valve’. It is then pumped through the ‘pulmonary valve’ into the pulmonary artery on its way to the lungs. Oxygenated (red) blood returning from the lungs collects in the left atrium and flows through the ‘mitral valve’ into the left ventricle. It is then pumped through the ‘aortic valve’ into the aorta and to the body.
Cosmetic surgery is performed to reshape normal structures of the body in order to improve appearance and self-esteem. Cosmetic surgery is usually not covered by health insurance because it is elective.
Reconstructive surgery is performed on abnormal structures of the body caused by congenital defects, developmental abnormalities, trauma, infection, tumors or disease. In general, reconstructive surgery is performed to improve function, but may also be completed to approximate a normal appearance.
Reconstructive surgery is typically covered by most health insurance policies, although coverage for specific procedures and levels of coverage may vary greatly.