Maternal Physiology

Question 1

By what percentage does cardiac output increase by 3rd trimester?

Answer 1

50%

Question 2

What percentage doe stroke volume contribute to increase CO in pregnancy?

Answer 2

30%

Question 3

What percentage does HR contribute to increased CO in pregnancy?

Answer 3

15%

Question 4

By what percent does CO increase during active labor?

Answer 4

30%

Question 5

By what percent does CO increase during 2nd stage labor?

Answer 5

45%

Question 6

By what percent is CO increased during immediate post-partum?

Answer 6

80%

Question 7

By what percent does blood volume increase during pregnancy?

Answer 7

35%

Question 8

Are there changes to CVP or PCWP during pregnancy?

Answer 8

Noq

Question 9

BY what % does MV increase by term?

Answer 9

50%

Question 10

What is the predominant factor for increase MV?

Answer 10

Increased TV

Question 11

Which FRC volumes decrease in pregnancy?

Answer 11

RV and ERV

Question 12

How does IRV change with pregnancy?

Answer 12

Slight increase

Question 13

What lung volumes remain unchanged in pregnancy?

Answer 13

TLC and VC

Question 14

By what % does FRC change in sitting position?

Answer 14

20% decrease

Question 15

What causes LES tone to be lower in pregnancy?

Answer 15

Increased progesterone

Question 16

By what % does red cell mass increase in pregnancy?

Answer 16

20%

Question 17

By what % does plasma volume increase in pregnancy?

Answer 17

45%

Question 18

Normal HCT by 3rd trimester?

Answer 18

35%

Question 19

Leading cause of mortality in pregnant patients globally?

Answer 19

PE

Question 20

Which coag factors increase during pregnancy?

Answer 20

I, VII, VIII, IX, X, XII

Question 21

Which coag factors remain unchanged during pregnancy?

Answer 21

II and V

Question 22

Which coag factors decrease during pregnancy?

Answer 22

XI, XIII

Question 23

What happens to plasminogen levels during pregnancy?

Answer 23

Increased

Question 24

By what % does MAC value decrease in pregnancy?

Answer 24

30-40%

Question 25

By what percent does local anesthetic requirements decrease during pregnancy?

Answer 25

30%

Question 26

Normal serum creatinine level in pregnancy?

Answer 26

0.5-0.6

Question 27

How is the bohr effect related to maternal fetal oxygen transfer?

Answer 27

Fetus transfer H+ ions to mother and in turns becomes more alkalotic while mom becomes acidotic. Creates left shift OHDC in fetus and right shift OHDS in mom

Question 28

Normal fetal PO2?

Answer 28

50-60 mmHg

Question 29

What is a normal umbilical artery gas and a normal umbilical vein gas?

Answer 29

https://creogsovercoffee.com/notes/2019/10/27/espresso-cord-gas-interpretation

Question 30

What is the umbilical vein gas reflective of?

Answer 30

Maternal/Placental side