OB GYN Board Exam All Answers Correct
When the morula enters the uterine cavity what does it become? ️Blasocyst
By what week does the anion and chorion fuse? ️Week 12
If any longer than 16 wks time then chromosomal abnormalities may be present
At what CRL should cardiac activity be ide...
OB GYN Board Exam All Answers Correct
When the morula enters the uterine cavity what does it become? ✔️Blasocyst
By what week does the anion and chorion fuse? ✔️Week 12
If any longer than 16 wks time then chromosomal abnormalities may be present
At what CRL should cardiac activity be identified? ✔️5mm
6wks gestation
How many weeks should a yolk sac be identified? ✔️5.5 wks
How many weeks should a gestational sac be visualized? ✔️4 wks
The mean sac diameter in a normal IUP will demonstrate how much of an increase in size per day until
the 10th week of gestation? ✔️1mm per day
Implantation of the fertalized egg occurs on what day? ✔️20-23
What week does the neural tube normally close? ✔️week 6
What MSD should demonstrate a yolk sac? ✔️>8mm
What is the most common birth defect? ✔️CHD
Can you see an increased nuchal thickness with CHD? ✔️Yes
, What are the 4 types of ASD? ✔️1. Primun
2. Secundum
3. Venosus
Which ASD is closest to the valves? ✔️Primun
Is heterozygous achrondoplasia lethal? ✔️No
No pulmonary hypoplasia
Is homozygous achondroplasia lethal? ✔️Yes
Shortened ribs and pulmonary hypoplasia
What is prune belly also known as? ✔️Eagle Barrett Syndrome
What is iniencephaly? ✔️Iniencephaly is a rare neural tube defect resulting in:
- occipital bone defect
- partial or total absence (rachischisis) of cervico-thoracic vertebrae
- fixed fetal head retroflexion "star-gazer" appearance
Will you have polyhydraminos or oligohydraminos with spina bifida? ✔️polydraminos
What type of truncus arteriosus is most common? ✔️type one
How do the vessels appear as they exit the heart is transposition of the great arteries? ✔️parallel
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