Flashcards in 1st Trimester Deck (19):
pubic symphisis to sacral prominatory
When will the first evidence of pregnancy be detected?
4.5 weeks gestational age
What is the first sign of pregnancy songraphically?
intra-decidual/gestational sac at 4.5-5 weeks gestational age
What is the first definative finding of an intrauterine pregnancy?
yolk sac at 5-6 weeks gestational age and a MSD of 8 mm
When is the embryo visualize on US?
6+ weeks and a MSD of 16 mm
What is MSD?
Mean Sac Diameter
What is the double decidual sac?
decidua vera and decidua capsularis (now debated)
What is required for IUP?
yolk sac or embryo
At what quant is a yolk sac usually seen?
The center of the yolk sac should be…
Cardiac activity is usually seen by what crown rump length (CRL)?
When should CRL not be used?
When the embryo can flex and extend
With CRL of <5 mm what should the HR be?
With CRL of >5 mm what shoud the HR be?
Verify in two planes that an IUP is surrounded by at least… of myometrium.
What is the definitve diagnosis for preganancy failure?
embryo > 5mm without cardiac activity
Definitive sign of ectopic pregnancy
Gestational sac with yolk sac or embryo outside of uterine cavity
With free fluid in either cul de sac, where else should you look for fluid?