The normal heart is a muscle about the size of a fist. …
The normal heart is a muscle about the size of a fist. With every beat it drives three ounces of blood through its intricate chambers and around five quarts throughout the entire body. Though we know much about how it operates, the heart is, nonetheless, a miraculous organ that has baffled the generations of scientists who have tried to mechanically replicate its power and efficiency. Endlessly Beating examines the heart as a muscle - pumping almost 100,000 times a day, pushing approximately five quarts of blood in an endless course to deliver oxygen to every cell of the human body. This hour tells the story of the normal heart through the histories of three people with end-stage heart failure, where a pump may be a temporary remedy, but in the long term, a transplant is almost always necessary. The three patients profiled live on the edge of life, existing in a compromised state that will inevitably need drastic intervention. Of the three individuals this hour follows, one will eventually receive the life-saving gift of a transplant; another must depend on an experimental new device to stay alive until a new heart can be found; and the third recovers with the aid of a heart pump, which lets his once-failed heart return to normal.
The past 50 years have brought enormous advances in our ability to …
The past 50 years have brought enormous advances in our ability to understand the precisely timed dance that squeezes the heart muscle and pushes out blood to the lungs and the rest of the body. Dramatic new treatments have been developed to help sustain its vital rhythm and to prolong life. These treatments, in turn, have inspired new, very modern dilemmas for patients and doctors alike. Even with advances, arrhythmias lead to 300,000 cases of sudden cardiac death in America each year. In this hour, learn how the body's internal electrical system synchronizes the four chambers of the heart pushing blood throughout the entire body - once a second, 100,000 times a day, three billion times over a lifetime.
A heart attack can strike at any time and without warning. In …
A heart attack can strike at any time and without warning. In minutes it can irreparably damage our hardest working muscle - the heart. And for many, a heart attack is the first sign of heart disease - the world's number one killer. This hour of THE MYSTERIOUS HUMAN HEART explores the causes of heart disease. How does cholesterol affect the heart? Obesity? Smoking? High blood pressure? How does stress affect the heart? Genetics? The program examines the causes behind the growing epidemic and what the world's leading scientists are doing to fight it.
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