Cardiac output

Question 1

Normal Cardiac Index

Answer 1

2.5-4 L/min/m2

Question 2

What is another name for CVP? aka what does it measure?

Answer 2

central venous pressure

measures right atrial pressure

Question 3

Normal CVP

Answer 3

2-6 mmHg

Question 4

Normal MAP

Answer 4

60-90 mmgHg

Question 5

how to calculate MAP

Answer 5

double diastolic pressure + SBP and divide the whole number by 3

Question 6

Normal EF

Answer 6

over 65%

Question 7

CI of what value or below indicates shock?

Answer 7

less than 1.8

Question 8

what impacts CO?

Answer 8

stroke volume and heart rate

Question 9

what is stroke volume

Answer 9

volume of blood ejected by the left ventricle each contraction

Question 10

what is CO

Answer 10

volume of blood ejected by ventricle per minute

Question 11

normal CO

Answer 11

4-8 L/min

Question 12

what is EF

Answer 12

percentage of ventricular blood volume ejected per contraction out of total volume

Question 13

what is mixed venous oxygen saturation, where is it measured from, and why to get its value?

Answer 13

(Coox or SvO2): percentage of oxygen bound to hemoglobin in blood returning to the right side of the heart
measured from tip of PA catheter (that way it tracks venous blood from SVC, IVC, and coronary veins)
get its value when CI is low and want to see how the body is truly perfusing (>60% is good)

Question 14

what is the difference between SvO2 and ScvO2?

Answer 14

ScvO2 is central venous oxygen saturation. It is not as accurate as SvO2 because it is a measurement taken from the end of the CVL (IJ or subclavian) and only measures the venous return from the SVC. It can be used in collab with other measurements if you dont have a PA catheter (>70% is normal)