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OB/GYN > physiology of pregnancy > Flashcards

physiology of pregnancy Flashcards

1
Q

what is the MAP

A

CO X SVR cardiac output times systemic vascular resistance

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2
Q

what is Cardiac output?

A

CO = HR X SV heart rate X stroke volume

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3
Q

what is stroke volume

A

SV = preload X contractility

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4
Q

what happens to SVR

A

decreases via vasodilation. more vessels due to the placenta .

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5
Q

MAP in pregnancy?

A

reduced from baseline

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6
Q

what happens to HR

A

rises 15%

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7
Q

what happens to contractility of the heart

A

stays the same; the EF stays the same. you do not get a hyperdynamic heart

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8
Q

what happens to the preload?

A

Goes WAY up.

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9
Q

what happens to the the number of RBCs?

A

goes way up

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10
Q

what happens to the O2 stas?

A

same

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11
Q

what happens to the CO?

A

goes up

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12
Q

what is hemoglobin?

A

RBCs/plasma

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13
Q

what happens to plasma?

A

goes way up so that the vesocity decreases. hemoglobin usually decreases due to the increase in plasma.

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14
Q

IVC syndrome

A

when the uterus compresses the IVC. this can make her hypotensive due to decreased preload. This can be relieved by laying her on her side.

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15
Q

what happens to the FEV1

A

nothing

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16
Q

what happens to respiratory rate

A

nothing

17
Q

what happens to the PO2

A

nothing

18
Q

what happens to the Tidal volue

A

goes up

19
Q

what happens to the clotting in pregnancy

A

increased clotting.

20
Q

what are the three As for platelets in primary hemostasis

A

adhesion, activation, aggregation

21
Q

what is the end point of primary hemostasis

A

platelet plug with a fibrinogen mesh

22
Q

what is the main component of secondary hemostasis

A

factors. Fibrinogen (factor 1) is converted to fibrin which is eventually broken into split products by TPA.

23
Q

what happens to clotting in pregnancy

A

increases

24
Q

what happens to GFR in pregnancy

A

increases

25
Q

what happens to creatinine in pregn

A

goes down

26
Q

is normal creatinine normal for pregn

A

NO. this indicates a problem because the creatinine is lower in pregnancy

27
Q

how much weight should you gain in preg

A 
depends on initial weight 
<18.5 - 1lb/week; 28-40lbs
18.5-25 -0.75lbs/wk; 25-35lbs
25-30 -0.5lbs/wk; 15-25lbs
>30 -0.25lbs/wk; 10-15lbs
28
Q

what GI issues do we worry about in pregnancy

A

gallbladder, nausea, GERD, iiron def anemia, constipation

29
Q

how do we treat nausea in pregnancy

A

dansitron and pyroxidine

30
Q

what do we use to treat GERD in pregnancy

A

PPIs

31
Q

what do we use to treat constipation

A

stool softeners and motility agents

32
Q

what do you always presecribe with iron supplemetns

A

stool softeners

33
Q

what do we need to watch out for in pregnancy

A

DVT/PE

OB/GYN (39 decks)

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