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Ann Thorac Surg 2005;79:1093-1094
© 2005 The Society of Thoracic Surgeons

Correspondence

Arterial Pressure and Pump Flow Rate During Long-Term Pulsatile and Nonpulsatile Cardiac Support

Akif Ündar, PhD, John L. Myers, MD

Department of Pediatrics—HO85, Penn State College of Medicine, 500 University Dr, PO Box 850, Hershey, PA 17033

(E-mail: aundar@psu.edu).

The first 20% of the full text of this article appears below.

To the Editor:

We read with great interest the article on left ventricular pressure and volume unloading during support with a pulsatile versus a nonpulsatile left ventricular assistence device by Klotz and associates [1]. They concluded that left ventricular pressure unloading is similar for both pulsatile and nonpulsatile left ventricular assist devices and that pulsatile flow significantly improves left ventricular volume unloading compared with nonpulsatile (continuous) flow. We have a few comments on this important investigation.

One [2–4] of us previously has suggested that hemodynamic energy levels should be included in all investigations before making any comparisons of different perfusion modes. Generation of pulsatile . . . [Full Text of this Article]






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