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Ann Thorac Surg 1989;47:752-755
© 1989 The Society of Thoracic Surgeons
a Departments of Anaesthesia and Perfusion, Brompton Hospital, United Kingdom
b Department of Surgery, The Cardiothoracic Institute, London, United Kingdom
Accepted for publication November 30, 1988.
* Address reprint requests to Dr Macrae, Department of Anaesthesia, Brompton Hospital, Fulham Rd, London SW3 6HP, United Kingdom.
Using a circulatory analogue, we investigated sequentially the performance of a dedicated ventricular assist device driver and an inttaaortic balloon pump when driving a pneumatic ventricular assist device. Each drive device was compared under identical pumping conditions at rates of 40 to 120 cycles/min against two resistances. Our preliminary study showed that a modified intraaortic balloon pump could drive a pneumatic ventricular assist device as effectively as its dedicated driver. The necessary modifications to and possible further development of the intraaortic balloon in this role are discussed.
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