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MRCOG Part 1 > Pregnancy Physiology > Flashcards

Pregnancy Physiology Flashcards

(18 cards)

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1
Q

How much does cardiac output increase during pregnancy?

A 30%
B 40%
C 50%
D 60%
E It doesn’t

A

40%

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2
Q

During pregnancy oxygen consumption increases by:

A 15-20ml/min
B 15-50ml/min
C 30-50ml/min
D 40-50ml/min
E 50-60ml/min

A

C 30-50ml/min

50 if not given a choice

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3
Q

At term, what is the increase in CO by volume?

A 200ml/min
B 500ml/min
C 700ml/min
D 1000ml/min
E 1500ml/min

A

E 1.5l/min

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4
Q

At term, how much additional blood flow goes to the uterus?

A 300ml/min
B 400ml/min
C 500ml/min
D 1000ml/min
E 1500ml/min

A

B 400ml/min

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5
Q

At term, how much additional blood flow goes to the kidneys?

A 300ml/min
B 400ml/min
C 500ml/min
D 1000ml/min
E 1500ml/min

A

A 300ml/min

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6
Q

At term, how much additional blood flow goes to the skin?

A 300ml/min
B 400ml/min
C 500ml/min
D 1000ml/min
E 1500ml/min

A

C 500ml/min

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7
Q

In early pregnancy, where does increased CO mainly go?

A Skin/breasts
B Uterus
C Uterus/skin
D GI tract
E Breasts/GI tract

A

A Skin/breasts

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8
Q

What is the driving force behind BP changes in pregnancy?

A Cardiac output increase
B Stroke volume increase
C Peripheral vascular resistance drops
D Increased blood volume
E Decreased RBC:plasma ratio

A

C Peripheral vascular resistance drops

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9
Q

What is the change in BP during pregnancy on average?

A no change
B Decrease 10mmHg/5mmHg
C Increase 10mmHg/5mmHg
D Decrease 5mmHg/10mmHg
E Increase 5mmHg/10mmHg

A

D Decrease 5mmHg/10mmHg

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10
Q

What causes vasodilation in pregnancy?

A

Increase NO, reduced ADMA, increased PGI2.

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11
Q

What ECG changes are seen in pregnancy?

A

Left axis deviation
Inverted T in III
Q in III and AVF
ST changes

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12
Q

Increase in ventiliation uring pregnancy?

A 40%
B 20%
C 70%
D 10%
E 30%

A

A 40%

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13
Q

How is ventilation increased in pregnancy?

A

Progesterone - bronchodilator

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14
Q

How much does lung capacity decrease during pregnancy?

A 100ml decrease
B 200ml increase
C 300ml decrease
D 200ml decrease
E 100ml increase

A

D 200ml decrease

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15
Q

What is the most abundant carbohydrate in the breast milk?

A Maltose
B Galactose
C Glucose
D Lactose
E Sucrose

A

D Lactose

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16
Q

Which of the following produce caput medusa when dilated?

A Hepatic veins
B Splenic veins
C Ductus venosus
D Umbilical arteries
E Umbilical veins

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A

E Umbilical veins

17
Q

Suxamethonium does not readily cross the placenta because of…

A Placental cholinesterase
B High protein binding
C Elongated molecular configuration
D High degree of ionisation
E Insufficient maternal concentration

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A

D High degree of ionisation

MRCOG Part 1 (5 decks)

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