OB final important

what is the most risk fetal position

transverse

how wide should the cervix be pushing

10cm

should the bowel of the fetus be hyperechoic

no

when is umbilical cord cyst normal

in first trimester

what does oligohydraminos affect

ALL systems

cervical length measurement

2.5 cm

what is a sign of distress in birthing

decreased pH

basal plate calcifications are shown in

Grade 2

fetal breathing exercise should be

30 seconds

three vessel view of the heart includes

• SVC

• aorta

• pulmonary trunk

parity is

the number of pregnancies at least 20 weeks

gravida is

number of times pregnant

what is the slit structure between the thalami that contains CSF

third ventricle

what lies between the 3rd and 4th ventricle and carries CSF

aqueduct of Sylvius

double decidual sac sign includes the

capsularis and parietalis

during skelatogenesis…

condensed mesoderm

• cartilage before bone

what lines the chorion, and contains fetus

amnion

when do chorion and amnion fuse

16 wks

what does the candy cane sign show

• ascending aorta

• aortic arch

• descending aorta

can you see a difference between meconium and vernix

no

what do umbilical arteries connect to

iliac vessels

the shunt in the liver that connects to the IVC

ductus venosus

what connects the pulmonary trunk to the descending aorta

ductus arteriosus

what is this

mono - di twins

• T sign (thin)

what is this

di - di twins

• twin peak sign

distance from cervix to the internal os is

2 cm

distal epiphysis of femur on US indicates..

fetus at 32 weeks

what is the normal measurement of vitaline sac (yolk sac)

< 6

normal measurement of atrium of fetal brain

<= 10

nuchal fold measurement

less than 6

where does the chorionic plate face

the baby

what does on overfull bladder casue

artificial lengthening of the cervix

how to rule out 2 vessel cord

must see two arteries not one

what is gastrochisis

bowel loops, not covered by membrane

• umbilical cord not involved

what is omphalocele

membrane covered

what is the hockey stick view

ductal view

• main pulmonary artery

• ductal arteriosus

• descending aorta

when should physiological herniation dissapear

12 weeks

what part of lone bone contains growth plate

metaphysis

what does the bulbus cordus become

right ventricle

what is a window for the aortic valve

left ventricular outflow tract

is fetal tone done by nose and lips

yes

• movement of jaw

how many movements should we see

3

when measuring femur, transducer should be

perpendicular

BPD landmarks include

• thalamus

• 3rd ventricle

• cavum septum palucidum

fluid around body, cant see stomach indicates

blockage of esophagus

a full stomach that doesnt empty indicates

duodenal atresia

the first sign on biophysical profile that is affected by exphysia

fetal breathing

max thickness of NT

3.5

what is praterning

blue print

what is the function of amniotic fluid

development of lungs, MSK, functioning kidneys

measurements in morphology scan

• AC

• BPD

• femur

• HC

(no CRL)

the coiling of umbilical cord is

normal

HC measurement

BPD x OFD x 1.57

first sign of intrauterine pregnancy

double decidual sign

fertalization occurs

24 hours after ovulation

positive feedback

• low progesterone

• high FSH

• not pregnant

when placenta fails to provide fetus it is called

fetal hypoxia

causes of PROM include

• multifetal

• incompetent cervix

• infections

• polyhydraminos

• amonocentesis

what is oligohydraminos caused by

impaired renal function

accessory lobe of placenta

succenturiate lobe

cord insertion adjacent to placenta

velamentous cord insertion

when cord vessels cross internal os it is

vasa previa

3 mandatory images at umbilical cord

• 3 vessels shown

• abdominal cord insertion

• placental cord insertion

primary ossification center

diaphysis

chamber closest to chest

right ventricle

TTTS

monochorionic

prenatal ossifiaction

• proximal humoral

• distal femoral

• proximal tibial

epiphysis

BPP evaluation

• breathing

• fetal movement

• fetal tone

• amnionic fluid levels

fetal blood mostly sent to major organs

head sparing

shoughed off amnionitc skin

vernix

PROM without labour is concern for

chorioaminoitis