test 9 second generation

Question 1

Rotary VAD

Answer 1

 Clinical development of non-pulsatile pumps lagged behind the development of the first generation pulsatile positive displacement pumps.
 In 1960 – 1st described continuous flow circulatory pumps.
 DeBakey and Noon developed a small axial flow LVAD that went into clinical trials in 1998.
 Followed by Jarvik 2000 in 1999.
 Nimbus/ HMII axial flow pump in 2000.

Question 2

Rotary pumps

Answer 2

 Uses rotating impellers to propel blood forward (heat and bearing wear)
 Supported with bearings
 Powered by spinning shaft/ magnetic forces

Question 3

Micromed

Answer 3

 Axial flow design
 Smaller size
         EXPANDS THE POOL of qualified patients
         Simplifies implantation
 Limited blood contact surface area
 Fewer moving
parts
         Reduces cost
         Potentially more durable
-has flow probe