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The Bridge Across Forever: Devices for CHF

A new generation of miniature, totally implantable devices for end-stage congestive heart failure promises to return patients to normal lives. If the implantable ventricular assist devices can function reliably for many years, they may offer patients an alternative to heart transplantation and even arrest the progression of the diseases at earlier stages.

by Mary Stuart

The human heart is an amazing machine; each day, it pumps 2000 gallons of blood through 60,000 miles of vessels in the circulatory system. It automatically adjusts to the changing demands in blood flow and blood volume when a person sleeps or climbs mountains, yet the heart owner is unaware of its functioning. And it beats some 3 billion times in a 70-year lifetime, all without oil changes or maintenance. No one has yet been able to successfully duplicate the sophisticated mechanical circuitry and forgettability of the human heart in an artificial heart. So, for patients that suffer congestive heart failure (CHF), a progressively degenerative disease in which the heart fails to pump enough blood to adequately supply the body's other organs, the only treatment is a heart transplant

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