Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Apex > Obstetrics > Flashcards

Obstetrics Flashcards

1
Q

Why do most parturients have mild respiratory alkalosis?

A

Progesterone increases Mv up to 50%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Airway edema in OB patients is made worse by:

A

Pre-Eclampsia
Tocolytics
Reverse T (duh)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

FRC is reduced in pregnant women as a function of:

A

Decreased expiratory reserve

Decreased residual volume

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

How is closing volume impacted by pregnancy?

A

Increases above FRC, causing airway closure during tidal breathing

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

How does an ABG differ in a pregnant woman?

A

PaO2 increases
PaCO2 decreases
Bicarb decreases

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

In pregnancy the oxyhemoglobin dissociation curve shifts to the:

A

Right

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

How is closing capacity impacted by pregnancy?

A

Remains unchanged, because although the closing volume increases, the residual volume decreases

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Respiratory rate increases by:

A

10%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Minute ventilation increases by:

A

50%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Why does minute ventilation increase?

A

Mostly because tidal volume increases by 40%

The increase in rate is small (10%)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

All of the lung volume decrease except:

A

closing capacity and vital capacity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Oxygen consumption is increased by _____% in a term pregnant woman

A

20%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Oxygen consumption is increased by _____% in the first stage of labor

A

40%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Oxygen consumption is increased by _____% in the second stage of labor

A

75%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What hormones contribute to vascular engorgement and hyperemia?

A

Progesterone
Estrogen
Relaxin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

In the 1st stage of labor, CO increases by ___%

A

20%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

In the 2nd stage of labor, CO increases by ___%

A

50%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

In the 3rd stage of labor, CO increases by ____%

A

80%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Which hemodynamic parameters are unchanged during pregnancy?

A

MAP and SBP

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Which hemodynamic parameters are altered during pregnancy?

A

DBP, SVR, and PVR DECREASE

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

How long does it take for CO to return to PRE-LABOR values postpartum?

A

24-48 hours

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

How long does it take for CO to return to PRE-PREGNANCY values postpartum?

A

2 weeks

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

The cardiac axis on a maternal ECG may show what abnormality?

A

A L axis deviation, because the gravid uterus pushes it up and to the L

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Why are parturients so prone to consumptive coagulopathies?

A

The have increased clotting factors (hence the hypercoagulable state)

BUT

They also have more fibrin breakdown, meaning they clot easier AND break down clots faster

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

Coag in pregnant women will show:

A

Decreased PT (20%) and decreased PTT (20%)
Normal-ish platelets

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

Pregnant women are more sensitive to which drugs?

A

Local Anesthetics
Volatile Anesthetics
(because of increased progesterone)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

How is gastric emptying impacted by pregnancy?

A

It isn’t, but it does decrease after onset of labor

28
Q

Uterine blood flow accounts for ____% of cardiac output

A

10

29
Q

What is a normal uterine bloodflow at term?

A

700-900 ml/min

30
Q

Which drug characteristics favor placental transfer?

A

LMW (<500 daltons)
High lipid solubility
Non-Ionized
Non-Polar

31
Q

Which drugs do NOT cross the placenta?

A

Paralytics, Glyco, Heparin, Insulin

32
Q

Which LA reduces the efficacy of epidural morphine?

A

2-Chloroprocaine

33
Q

Which opioid has LA properties?

A

Demerol

34
Q

Why isn’t lidocaine preferred for epidurals?

A

It produces a strong motor block, and can cause neurotoxicity if inadvertently injected intrathecally

35
Q

What is the dose range for spinal bupivacaine?

A

1.5 - 2.5 MILLIGRAMS

36
Q

What is the dose range for spinal ropivicaine?

A

2 - 3.5 MILLIGRAMS

37
Q

There are three ways to develop a total spinal:

A
  1. Epidural dose injected intrathecally
  2. Epidural dose injected subdural (delayed s/s)
  3. Spinal injection after failed epidural
38
Q

How can you prevent a subdural injection?

A

You really can’t. Neither aspiration or a test dose will rule it out

39
Q

What is the classic presentation of a subdural injection?

A

Symptoms of excessive cephalad spread 10-25 min after epidural placement

40
Q

Why do subdural injections cause total spinals?

A

Because the potential space is so much small, so the LA rapidly travels up and down

41
Q

What is the treatment for mag toxicity?

A

Diuretics
1g Calcium

42
Q

What are the side effects of pitocin?

A

Water intoxication
Hypotension
Reflex Tachycardia
Coronary Vasoconstrict.

43
Q

What is the half life of pitocin?

A

4-17 min

44
Q

What are the side effects of methergine?

A

Vasoconstriction
Hypertension
Cerebral Hemorrhage

45
Q

What is the half life of methergine?

A

2 hours

46
Q

What is the dose of Methergine?

A

0.2mg

47
Q

What is the dose of hemabate?

A

0.25 mg

48
Q

What are the side effects of Hemabate?

A

N/V
Diarrhea
Hypotension
HTN
Bronchospasm

49
Q

How much higher is the mortality from general anesthesia in pregnancy?

A

17x higher than the general population

50
Q

During a general anesthetic, the risk of neonatal acidosis increases when the time from incision to delivery exceeds:

A

3 min

51
Q

Triple prophylaxis against aspiration includes:

A

Bicitra
Reglan
Ranitidine

52
Q

Should a defasciculating dose be given in pregnancy?

A

Surprisingly no. Myalgia is reduced in pregnancy

53
Q

What is normal amniotic fluid volume?

A

700ml

54
Q

When should NSAIDs be avoided in pregnancy?

A

After the first trimester

55
Q

Which surgeries have the highest incidence of preterm labor?

A

Intraabdominal and Pelvic

56
Q

What is the best time for a pregnant patient to have surgery?

A

The second trimester

57
Q

At what gestational age are women considered a full stomach?

A

18-20 weeks

58
Q

Chronic cocaine use is associated with which blood dyscrasia?

A

Thrombocytopenia

59
Q

Which obstetric pathologies are associated with DIC?

A

AFE
Placental Abruption
Intrauterine Demise

60
Q

What is the neonatal IV dose of epinephrine?

A

10-30mcg/kg

61
Q

What is the neonatal intratracheal dose of epinephrine?

A

0.05 - 0.1 MG/kg

62
Q

What is the bolus dose of IVF for a neonate?

A

10 ml/kg

Includes PRBCs

63
Q

Which local anesthetic DOES NOT cross the placenta

A

2-Chloroprocaine because it’s metabolized so quickly

64
Q

Immediately after delivery, neonatal SpO2 should be:

A

> 60%

65
Q

After ten minutes, neonatal SpO2 should be:

A

90%

66
Q
A

Apex (46 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions