test 8 VAD history

Question 1

1930s

Answer 1

• Carrell and Lindbergh and Demikhov Experimented with mechanical support in animal models

Question 2

1953

Answer 2

• Gibbon
   1st use of CPB
   Inability to wean fueled interest in prolonged mechanical support in order to promote myocardial recovery

Question 3

1963

Answer 3

• Spencer, et al
   Reported using a roller pump to support a patient to recovery
   Roller pumps aren’t good VADS
   Limitations
   Tethering, Blood trauma, Adjust pump speeds due to changes in heart pressures.

Question 4

1966

Answer 4

– DeBakey
 1st successful clinical application of a true VAD
 Pneumatically driven diaphragm pump
 Paracorporeal
         LA to Axillary Artery
 37yo patient who could not be weaned from CPB s/p AVR/MVR
 Supported for 10 days
 Weaned and Discharged

Question 5

1960s

Answer 5

– Klaus, et al.
 Introduced the concept of atrial counter pulsation
 Rapid systolic unloading of the ventricle with diastolic augmentation
 Lead to the development of the balloon pump which was developed in 1963 and applied clinically in 1967