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The Annals of Thoracic Surgery, Vol 55, 273-275, Copyright © 1993 by The Society of Thoracic Surgeons
OH Frazier
Based on the success of the pneumatically powered HeartMate (Thermo
Cardiosystems Inc, Woburn, MA) left ventricular assist device, researchers
at the Texas Heart Institute have begun conducting clinical studies of the
vented electric model in bridge-to-transplantation procedures. Like the
pneumatic device, the electric device is implanted intraperitoneally, but
the blood pump is powered through a percutaneous lead that is connected to
two rechargeable batteries. The batteries are worn in a shoulder holster;
thus, patients are not tethered to a control console and are fully mobile.
Two patients are currently undergoing left ventricular support with the
vented electric HeartMate (duration of support, 315 days and 112 days) as
they await cardiac transplantation, and they seem to be medically fit for
outpatient care and follow-up. This technology may eventually allow
selected patients to receive long-term support as a substitute for cardiac
transplantation.
ARTICLES
Chronic left ventricular support with a vented electric assist device
Texas Heart Institute, Houston 77225-0345.
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