Crash Course

Question 1

CO returns to pre-labor values within

Answer 1

24 hours

Question 2

CO returns to prepregnancy levels between

Answer 2

12-24 weeks

Question 3

HR decreases to prepregnancy levels by

Answer 3

2 weeks postpartum

Question 4

blood loss during vaginal delivery

Answer 4

500-600 mL

Question 5

blood loss during CS

Answer 5

1000 mL

Question 6

Coagulation profile returns to nonpregnant state by

Answer 6

2 weeks postpartum

Question 7

H&H Postpartum

Answer 7

H&H drop during the first 3 postpartum days and increase gradually over the next 3 days due to reduction on plasma volume

Question 8

progesterone GI effects

Answer 8

delays gastric emptying and increases the risk of aspiration

Question 9

MAC in pregnancy

Answer 9

decreased by 40% due to increased progesterone

Question 10

when does MAC return to normal

Answer 10

around 1 week

Question 11

pseudocholinesterase activity in pregnancy

Answer 11

decreased by 24% before delivery and 33% on the third postpartum day

Question 12

components of the biophysical profile (5)

Answer 12

fetal breathing movement
gross body movement
fetal tone
qualitative amniotic fluid volume
reactive nonstress test

Question 13

how does neuraxial anesthesia affect uteroplacental blood flow

Answer 13

increased blood flow as a result of- pain relief (↓ catecholamines), ↓ sympathetic activity, ↓ maternal hyperventilation

decreased blood flow as a result of- hypotension, unintentional IV injection of local anesthetic, uterine tachysystole

Question 14

helps regulate uterine blood flow by increasing plasma volume

Answer 14

plasma cortisol

Question 15

causes uterine vasodilation and therefore increases UBF and increases nitric oxide

Answer 15

estrogen

Question 16

which binds to oxygen with greater affinity adult hemoglobin or fetal

Answer 16

fetal

Question 17

O2 dissociation curve is shifted ____________ for fetal hgb

Answer 17

left

Question 18

block in first stage of labor

Answer 18

paracervical block

Question 19

first stage of labor pain impulses are transmitted by

Answer 19

visceral afferent nerve fibers which accompany sympathetic fibers

Question 20

second stage of labor pain is transmitted via

Answer 20

the pudendal nerve at S2-S4

Question 21

second stage of labor type of pain

Answer 21

somatic