The present invention overcomes the multistage problems by providing a single two row stage containing one row of blades in which there is some axial and some centrifugal blood flow, and a second row of {HEAD ~ blades} in which {TAIL ~ the blood flow} is purely axial 
The present invention overcomes the multistage problems by providing a single two row stage containing one row of blades in which there is some axial and some centrifugal blood flow , and a second row of { HEAD ~ blades } in which { TAIL ~ the blood flow } is purely axial
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