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Flashcards in Fetal Heart Deck (15)
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0
Q

Callen states best fetal ❤️imaging is done at

A

20-22 weeks. Bone shadow in 3rd tri makes ❤️hard to see.

1
Q

At what gestational week has the heart formed all 4 chambers

A

Week 8

2
Q

❤️ occupies ___ of chest

A

1/3

3
Q

CV system

A

1st to function
Circulation begins 5 wks
Heart initially a tube. Develops by 7 wks

4
Q

Fetal Circulation

A

Placenta -> Umbilical vein + (ductus venosus bypasses liver & drains to IVC) left portal vein -> liver -> hep veins -> IVC -> rt atrium (-> rt vent -> main pulmonary artery -> ductus arteriosus bypasses lungs -> aorta) -> foramen ovale -> lt atrium -> lt ventricle -> aorta -> common iliacs -> rt/lt internal iliacs -> 2 umbilical arteries -> placenta

5
Q

Bypasses fetal lungs

A

Ductus Arteriosus

Closes after birth & becomes lig arteriosum

6
Q

Bypasses liver

A

Ductus Venosus. Dumps into IVC

7
Q

4 ch

A

Rt vent closer to anterior chest wall.
Lt atrium closest to aorta and spine.

Asses ❤️position, septal defects, patency of valves, TV inserts lower than MV

8
Q

5 ch

A

Tilt up from 4 ch. asc aorta makes 5th chamber

9
Q

Long axis view

A

LVOT

10
Q

From long axis. Tilt more right and obtain

A

RVOT

11
Q

Short axis view

A

Long chest. *RVOT.

12
Q

Left atrium close to

A

Spine

13
Q

Right vent close to

A

Anterior chest wall

14
Q

Foramen ovale

A

Flap in rt atrium