1st Trimester Flashcards
indications for 1st tri ultrasound
- confirm presence
- cause of bleeding
- eval pain
- confirm cardiac motion
- estimate gestational age
- eval maternal pelvis
- molar preg.?
goals of a first tri ultrasound
- presence,location,#, size of sac
- presence of yolk sac
- heart activity
- NT
- fetal age
- early diagnosis of anomalies
disadvantages of 1st tri scan
-not able to detect anomalies
-minor abnormalities unclear
-high spontaneous abortion rate
when do HCGs double
every 48-72 hrs
what is the HCG level for when a sac is seen
2000
elevated AFP indicates
fetal anomalies
what can cause date discrepancy
wrong dates
fibroids
multiple gestations
molar
retroverted uterus
uterine anomalies
when is the heart formation complete
week 8
UG system week 8 milestone
primitive kidneys
UG system (urogenital) week 11 milestone
kidneys in adult position
genitalia visualized
musculoskeletal week 6 milestone
formation of limb buds
musculoskeletal week 8 milestone
clavicle ossify
musculoskeletal week 9 milestone
vertebral bodies
potential spaces in the first tri
endometrial canal
chorion/amnion seperation
implantation bleed
necrotic fibroid
abnormal gestational sac major criteria
greater than 8mm without yolk sac
greater than 16mm without embryo
minor criteria for ABN gestational sac
thin decidua reaction less than 2mm
irregular contour
low position
yolk sac abnormals
ges. sac greater than 8mm
yolk sac greater than 6mm
calcification/irregular shape
symptoms of A-embryonic preg.
bleeding
pain
not experiencing normal pregnancy signs
most common location for ectopic
ampulla
what are the causes for an ectopic
hormones
damaged tubes
genetic abnormalities
endometriosis
smoking
symptoms of ectopic
abdmonial rectal or one sided pain
bleeding
dizziness
increased risk factors for an ectopic
previous ectopic
STI
IVF
IUD
until when should a yolk sac be seen
10 weeks
what to look for during an ectopic pregnancy
corpus luteum
blood supply
