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In early pregnancy, how is amniotic fluid produced?
the placenta
What does morality mean?
right and wrong conduct and good and bad character
Explain confidentiality in ultrasound
the duty of the health care professional to protect and respect a patient’s privacy
How many weeks after fertilization does the blastocyst typically enter the uterus after fertilization?
4 to 5 days after fertilization
What is acrania?
partial or complete absence of the cranium
After how many weeks of gestation should fetal anatomy be adequately assessed?
after 18 weeks of gestation
Which trimester is a nuchal translucency examination performed?
The first-trimester
What is monochorionic?
a single chorionic sac
What is the first structure visualized within a gestational sac?
the secondary yolk sac
What is the most frequent sonographic finding in an ectopic pregnancy?
identification of an adnexal mass
TRUE or FALSE...
An overdistended bladder or uterine contraction can give a false impression of placenta previa.
TRUE!
What does autonomy mean?
the self-governing or self-directing freedom to choose and have one’s choices respected
When does the embryonic heart begin to beat?
at 35 days (5 to 5.5 weeks)
What week does the yolk sac resorb and is no longer sonographically visible?
by 12 weeks of gestation
At what week should we stop using the crown-rump length measurement?
twelfth gestational week
How many weeks is the second trimester?
between 14 and 26 gestational weeks
What does the Nuremberg Code emphasize?
individual rights and autonomy, which has become a key element in modern-day ethics.
How many days should a normal IUP at less than 7 weeks demonstrate a doubling of hCG levels?
every 3.5 days or an increase of 66% within 48 hours
By what week does the fetal bowel return to the abdominal cavity?
11th week
Wha is a gastroschisis?
a congenital fissure that remains open past 12 weeks in the wall of the abdomen just to the right of the umbilical cord
In the 2nd trimester what images should be included in the fetal head? (name at least 2)
cerebellum
choroid plexus
cisterna magna
lateral cerebral ventricles
midline falx
cavum septum pellucidi
What landmarks should be seen when measuring the abdominal circumference in a transverse view?
portal sinus
fetal stomach
umbilical vein
When does the fusion of a chorion and amnion occur?
etween 14 and 15 weeks of gestation
What does the anechoic center of a 5- to 6-week gestational sac represent?
the chorionic cavity
What is the most common cause of vaginal bleeding in the first trimester?
Subchorionic hemorrhage