Cardioplegia

Question 1

Blood to Cardioplegia ratio

Answer 1

4:1

Question 2

Number of Cardioplegia amps (and in mls) added to 1000ml ringers

Answer 2

5 amps / 100 ml

Question 3

Antegrade Sites

Answer 3

Aortic Root
L/R Coronary Ostia
Vein Graft

Question 4

Retrograde Sites

Answer 4

Coronary Sinus

Question 5

Aortic Root cardioplegia Line Pressure and flow

Answer 5

Line pressure: 150-200 mmHg

Flow: 300-500 ml

Question 6

Coronary Ostia (L/R) Line Pressure and Flow

Answer 6

Line Pressure: 140-160 mmHg

Flow: 100-200 ml

Question 7

Vein Graft Line Pressure and Flow

Answer 7

Line Pressure: 100 mmHg

Flow: 30-80 ml

Question 8

Coronary Sinus

Answer 8

Line Pressure: 30-50 mmHg (tele) 80-100 mmHg pump

Flow: 100-300 ml

Question 9

Cold cardioplegia temperatures

Answer 9

4-7 degrees celsius

Question 10

Warm cardioplegia tempratures

Answer 10

34-37 degrees celsius

Question 11

Tepid cardioplegia temperatures

Answer 11

12-28 degrees celsius

Question 12

What direction does antegrade cardioplegia flow?

Answer 12

Downwards into coronary ostia to coronary arteries L+R

Question 13

What direction does Retrograde cardioplegia flow?

Answer 13

Upwards via coronary sinus

Question 14

Cardioplegia Alarm

Answer 14

Antegrade

Regulate: 290 mmHg
Stop pump: 300 mmHg