OB maternal and fetal physiology

Question 1

Signs of overt caval compression (supine hotn syndrome)

Answer 1

HOTN + bradycardia
Sweating
Pallor
Nausea
Vomiting

Question 2

____ is mandatory prior to anesthesia induction

Answer 2

Preoxygenation

Question 3

Use a ______ ETT and avoid _____

Answer 3

Smaller
Nasal intubation/ instrumentation

Question 4

All general anesthesia intubations are _____

Answer 4

RSIs

Question 5

Cell mediated immunity is ___

Answer 5

depressed

Question 6

How is hematology affected?

Answer 6

Hypercoaguable

Question 7

MAC is ___

Answer 7

Decreased
“pregnancy brain”

Question 8

Cardiac output is _____

Answer 8

Increased

Question 9

Pregnant women have ____ sympathetic tone, which means they are _____ responsive to catecholamines

Answer 9

Increased
Less

Question 10

Pregnant women should not lie flat after ___ weeks without aggressive maintenance of BP

Answer 10

20

Question 11

Minute ventilation ______, while FRC ____

Answer 11

increases
Decreases

Question 12

Apnea causes ____ to PaO2

Answer 12

Rapid, serious
d/t low FRC

Question 13

Fetal ____ can result in ion trapping of opioids and local anesthetics

Answer 13

Acidosis

Question 14

Voltaile agents may cause HOTN above ____ MAC

Answer 14

1

Question 15

Which drugs are most likely to cause a reduction in UBF?

Answer 15

Propofol
Thiopental
Ketmaine at doses above 1.5mg/kg
volatile agents over 1 MAC

Question 16

It is ____ to have decels when baby is coming down the vaginal canal

Answer 16

Normal
As long is it is not for an extended period of time or with umbilical cord compression or with uretoplacental insufficiency

Question 17

What will increase R L shunting?

Answer 17

Hypoxia
Acidosis

Question 18

Fetal vs adult HGB

Answer 18

Fetal has more affinity for O2
Fetal has less for CO2