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Flashcards in OB facts Deck (211)
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1

all pt's are considered what????

full stomachs

2

what type of induction should be done s needed

RSI

3

Respiratory Changes:
the diaphragm is displaced 4cm where by the expanding uterus

cephalad

4

Respiratory Changes:
the diaphragm being displaced 4 cm cephalic will cause what to FRC

decrease by 20%

5

Respiratory Changes:
what happens to VC, TLC, and IC ?

nothing they are all unchanged
-Unchanged d/t compensatory increase in thoracic anteroposterior diameter

6

Respiratory Changes:
as pregnancy increase thoracic breathing INcreases and _____ breathing decreases

Abdominal

7

Respiratory Changes:
the ventilatory changes produce what acid base problem? yet the compensation by metabolic acidosis will keep pH normal

respiratory alkolosis (PaCO2 =30)

8

Respiratory Changes:
would you anticipate the PaO2 to be higher in the pregnant or non pregnant state

Pregnant

9

Respiratory Changes:
Would you anticipate the PaCO2 to be higher in the pregnant or non-pregnant state

non-pregnant

10

Respiratory Changes:
the increase in O2 consumption produces a 70% increase in _____ _____ at term

alveolar ventilation

11

Respiratory Changes:
the increase in O2 consumption produces a 70% increase in alveolar ventilation at term. the ____ will increase by 40%

tidal volume

12

Respiratory Changes:
the increase in O2 consumption produces a 70% increase in alveolar ventilation at term. the Tidal volume will increase by 40% and the _____ increases by 15%

respiratory rate

13

Respiratory Changes:
the increase in O2 consumption produces a 70% increase in alveolar ventilation at term. the Tidal volume will increase by 40% and the respiratory rate increases by 15% relenting the increase in what?

alveolar ventilation

14

Respiratory Changes:
the increase in alveolar ventilation and decrease in FRC enhance maternal uptake of what?

Inhaled anesthetics

15

Respiratory Changes:
Increased AV + Decreased FRC = what to MAC

decreased MAC

16

Respiratory Changes:
Airway edema and engorgement is most evident during what trimester

3rd

17

Respiratory Changes:
Airway edema and engorgement is most evident in the 3rd trimester... what does this mean with our instrumentation?

Unexpected nose bleeds and airway bleeds can occur d/t careless instrumentation placement
oral airways, ETT, and NG tubes placed w/ caution
ETT need to be smaller (6/7 instead of 7/8)

18

Respiratory Changes:
a decrease in FRC may cause what complication

rapid desaturation

19

Respiratory Changes:
there is an increase in maternal O2 consumption and any episode of apnea will lead to what?

maternal hypoxia

20

Respiratory Changes:
During labor hyperventilation may be due to pain or specific breathing technique. Assess for alkalemia bc hypocarbia will cause what? and will result in what?

uterine vasoconstriction
result in decreased placental perfusion

21

Respiratory Changes:
with hyperventilation the alkalemia and hypocarbia will cause uterine vasoconstriction and results in decreased placental perfusion... is the fetus at risk?

yes

22

Changes in lung parameters: increase/ decrease/ NC:
Inspiratory reserve volume (IRV)

increase (5%)

23

Changes in lung parameters: increase/ decrease/ NC:
TV

Increase (45%)

24

Changes in lung parameters: increase/ decrease/ NC:
Expiratory reserve volume (ERV)

decrease (25%)

25

Changes in lung parameters: increase/ decrease/ NC:
Residual Volume (RV)

decrease ( 15%)

26

Changes in lung parameters: increase/ decrease/ NC:
Inspiratory capacity (IC)

increase (15%)
IC = IRV + TV
(since both IRV and TV increase obviously this must increase also)

27

Changes in lung parameters: increase/ decrease/ NC:
FRC

Decrease (20%)
FRC = ERV + RV
(since both ERV and RV decrease obviously this must also decrease)

28

Changes in lung parameters: increase/ decrease/ NC:
Vital Capacity (VC)

no change
VC= IRV + ERV + TV

29

Changes in lung parameters: increase/ decrease/ NC:
Total lung Capacity (TLC)

decrease (5%)

30

Changes in lung parameters: increase/ decrease/ NC:
closing volume and capacity

no change

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