General / Appt Flashcards
What is the difference between embryonic & gestational age
Embryonic is from conception, gestational is from LMP
What are first trimester dates
0-13w6d
What are second trimester dates
14w0d-27w6d
What are third trimester dates
28w- end
What is the embryonic period
Fertilization to 8 weeks post fertilization
What is the fetal period
9 weeks to term, (11 weeks gestational)
How early is a pre term infant
Less than 37 weeks
What is a full term infant
37-42 weeks
What is a post term infant
More than 42 weeks
How are pregnancies dated in the first trimester
Fetal measurement , crown rump length
What measurements are used to measure fetus
Head circumference, bi parietal diameter, abdominal circumference, femur length
How many days is the CRL different to change the EDD before 8w3d
Greater than 5 days
How many days is the CRL different to change the EDD between 9 & 14 weeks
Greater than 7 days
How many days are fetal measurements off to change the EDD at 14-22 weeks
Greater than 7 days
How many days are the fetal measurements off to change the EDD from 22 -28 weeks
Greater than 14 days
How many days are the fetal measurements off to change the EDD after 28 weeks
Greater than 21 days
When is first pregnancy visit & what is done
6-10 weeks, confirm pregnancy, possibly Pap smear, informal US, possibly other testing
How often are OB visits in pregnancy
Every 4 weeks first 28, then every two weeks 28-36, then weekly
What is the most common type of twin
Dichronionic & diamnioctic
What are the proportions of zygosity for di di twins
10-20% monozygotic 80% dizygotic
When is cleavage for each twin type: di/di, mono/di, mono/mono, conjoined twins
Morula /days 1-3, blastocyst/days 4-8, implanted blastocyst/days 8-13, formed embryonic disc/days 13-15
What is order of Gs & Ps
Numbers of pregnancies, term, preterm, abortions, living children
What can risk assessment for a patient be based on
Background risks, age related risks, screening results, empirical risks, health history & exposures, family history
What are things to ask about prior pregnancies
Outcome, order, fetal sex, alive or deceased, any complications, which partner
What are general family history questions to ask in a prenatal visit
Birth defects, intellectual disability or learning difficulties, autism, consanguinity, recurrent pregnancy loss, still birth , or infertility
What factors impact what testing will be available in pregnancy
Availability of fetal testing, gestational age, risk & benefits, availability of sample, cost
