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OBGYN > Fetal heart/circulation registry review > Flashcards

Fetal heart/circulation registry review Flashcards

1
Q

Embryology

A

Initially 2 tubes that fuse and fold to form 4 chambers

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2
Q

Heart contractions

A

Begin at 36 days gestation (5 weeks), detected on US by CRL 5mm

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3
Q

Normal FHR

A

120-180BPM

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4
Q

Full formation of heart

A

10 weeks

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5
Q

Normal anatomy

A

Apex angled to left of midline at 45 degree angle from spine, stomach and apex of heart pointing to left of fetus

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6
Q

Levocardia

A

Normal cardiac position

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7
Q

Dextrocardia

A

Abnormal cardiac situs, apex pointing to the right chest

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7
Q

Normal cardiac rythem

A

Atrial and ventricular beats documented simultaneously

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8
Q

Documentation of normal cardiac rythem

A

M mode through ventricle and atrium, doppler of inflow/outflow

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8
Q

4CH view

A

-Left and right ventricles separated by interventricular septum
-RV and LV should be similar in size
-Lt/Rt atria separated by atrial septum opening at foramen ovale

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9
Q

Opening from left atrium to left ventricle

A

Mitral valve

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10
Q

Opening from right atrium to right ventricle

A

Tricuspid valve

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11
Q

Chamber closest to sternum

A

Right ventricle

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12
Q

Chamber closest to spine

A

Descending aorta

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13
Q

Outflow tracts

A

Right ventricular outflow tract (RVOT)
Left ventricular outflow tract (LVOT)

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14
Q

LVOT

A

Shows left ventricle to Aorta

15
Q

MPA

A

Main pulmonary artery

16
Q

RVOT

A

Shows right ventricle to MPA

17
Q

3 vessel view (3VV)

A

Pulmonary artery, aorta, superior vena cava (stack of coins)

18
Q

Fetal oxygenated blood

A

Comes from the umbilical vein and not the lungs, requires “bypasses”

19
Q

Left side of heart + aorta

A

Directed by shunts to supply most of the blood to the body

20
Q

3 fetal heart bypasses

A

Ductus venosus, foramen ovale, ductus arteriosus

21
Q

Ductus venosus

A

Umbilical vein to IVC, bypasses liver

22
Q

Foramen ovale

A

Rt atrium to lt atrium

23
Q

Ductus arteriosus

A

MPA to aorta, bypasses lungs

24
Q

Deoxygentated blood from mom–> oxygenated fetal blood

A

Through placenta goes from deoxygenated to oxygenated

25
Q

OXBlood FLOW from fetal heart to fetal body

A

Placenta (O2)–>umbilical vein–>fetal liver(stops at liver) AND ductus venosus –>IVC +SVC–>Rt atrium–>Foramen ovale (–> left atrium) AND tricuspid valve–> right ventricle–>main pulmonary artery–> ductus arteriosis–> aorta–> body

26
Q

Blood FLOW returning to fetal heart from lungs

A

Pulmonary vein –> lt atrium –> mitral valve –> left ventricle–> aorta

27
Q

DEOXBlood FLOW from fetal body to placenta

A

Internal iliac arteries–> umbilical arteries–> Placenta

OBGYN (17 decks)

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