Test Bank: Blueprints Obstetrics & Gynecology
At what week gestation does B-HCG peak? - AnswersAt 10 weeks - peaks at 100,000 mIU/mL
At what week gestation does an embryo start being called a fetus? - Answers8 weeks gestation
How early might you start seeing fetal heart beats on US? - Answers6 weeks
At what week gestational age might you first see the gestational sac in the uterus? - Answers5
weeks
What is the Chadwick sign? - AnswersBluish discoloration of the vagina and cervix indicating
pregnancy
What is the difference between "Gestational age" and "Developmental age?" -
AnswersGestational age is the weeks since the LMP
Developmental age is the weeks since conception (usually two weeks less than GA)
At what week of gestation does the mother begin to be aware of fetal movements? -
Answers16-20 weeks
How much does plasma volume increase during pregnancy? - AnswersBy 50%.
RBC volume increases by 20-30%, so hematocrit decreases
Which hormone affects smooth muscle in pregnancy and is responsible for many of the
physiologic changes seen? - AnswersProgesterone causes smooth muscle relaxation
How much does the daily caloric intake requirement increase during pregnancy? - AnswersBy
300kCal/day
,If a patient begins to gain an unusually large amount of weight late in pregnancy, what
pathology should you consider? - AnswersPre-eclampsia - it could be a sign of fluid retention
Which three chemicals are assayed in the standard triple test for Down syndrome? -
AnswersAlpha feto protein
B-HCG
estriol
At what week is AFP usually screened to check for Down syndrome? - Answers15-18 weeks
At what week of pregnancy are women screened for Group B Streptococcal infection? -
Answers36 weeks
What is the treatment for women who test positive for GBS late in pregnancy? - AnswersIV
penicillin
Name the common, benign cause of lower abdominal pain that often occurs late in the second
trimester of pregnancy? - AnswersRound ligament pain - secondary to the rapid expansion of
the uterus and stretching of the ligamentous attachments
What are the five components of the Biophysical Profile? - AnswersAmniotic fluid volume
Fetal tone
Fetal activity
Fetal breathing movements
NST
,Which chemical is seen in higher concentrations in the amniotic fluid when the lung matures? -
AnswersLecithin increases as the lungs mature, while sphingomyelin decreases beyond about
32 weeks
What is a heterotropic pregnancy? - AnswersWhen there is an intrauterine and an extrauterine
pregnancy simultaneously
What is the treatment of choice for an unruptured ectopic pregnancy? - AnswersMethotrexate
What is the name for the death of an embryo or fetus before 20 weeks with complete retention
of the POC? - AnswersMissed abortion
What is the most common cause of first trimester abortions? - AnswersFetal chromosomal
abnormalities
What are the most common causes (4) of second-trimester abortions? - AnswersUterine or
cervical abnormalties
Trauma
Systemic disease
Infection
What is the definition of recurrent/habitual abortions? - AnswersThree or more consecutive
spontaneous abortions
What additional analyte is sometimes added to the triple test to make the "quad screen?" -
AnswersInhibin A
How many days after fertilization does the blastocyst typically implant into the endometrium? -
Answers7 days
, In which weeks of development does organogenesis take place? - AnswersWeeks 3-8
What level of sensitivity does the triple-test have? - AnswersOnly 60%
but 80% over the age of 35
With a Down syndrome fetus, which of the analytes in the triple test are elevated and which are
decreased? - AnswersMSAFP - decreased
estriol - decreased
BHCG - increased
What percentage of amniocenteses have complications? - Answers0.5%
Complications include ROM, premature labor, fetal injury
At which week gestation can CVS be performed? - Answers9 weeks (six weeks earlier than
amniocentesis)
What problems are associated with performing CVS before 9 weeks? - AnswersLimb
abnormalities
What is fetal lie (what are the options/classifications)? - AnswersEither longitudinal or
transverse in the uterus
What is fetal presentation (what are the options/classifications)? - AnswersEither breech or
cephalic
What does the P in PROM stand for? What is the definition? - AnswersPremature Rupture of
Membranes
At what week gestation does B-HCG peak? - AnswersAt 10 weeks - peaks at 100,000 mIU/mL
At what week gestation does an embryo start being called a fetus? - Answers8 weeks gestation
How early might you start seeing fetal heart beats on US? - Answers6 weeks
At what week gestational age might you first see the gestational sac in the uterus? - Answers5
weeks
What is the Chadwick sign? - AnswersBluish discoloration of the vagina and cervix indicating
pregnancy
What is the difference between "Gestational age" and "Developmental age?" -
AnswersGestational age is the weeks since the LMP
Developmental age is the weeks since conception (usually two weeks less than GA)
At what week of gestation does the mother begin to be aware of fetal movements? -
Answers16-20 weeks
How much does plasma volume increase during pregnancy? - AnswersBy 50%.
RBC volume increases by 20-30%, so hematocrit decreases
Which hormone affects smooth muscle in pregnancy and is responsible for many of the
physiologic changes seen? - AnswersProgesterone causes smooth muscle relaxation
How much does the daily caloric intake requirement increase during pregnancy? - AnswersBy
300kCal/day
,If a patient begins to gain an unusually large amount of weight late in pregnancy, what
pathology should you consider? - AnswersPre-eclampsia - it could be a sign of fluid retention
Which three chemicals are assayed in the standard triple test for Down syndrome? -
AnswersAlpha feto protein
B-HCG
estriol
At what week is AFP usually screened to check for Down syndrome? - Answers15-18 weeks
At what week of pregnancy are women screened for Group B Streptococcal infection? -
Answers36 weeks
What is the treatment for women who test positive for GBS late in pregnancy? - AnswersIV
penicillin
Name the common, benign cause of lower abdominal pain that often occurs late in the second
trimester of pregnancy? - AnswersRound ligament pain - secondary to the rapid expansion of
the uterus and stretching of the ligamentous attachments
What are the five components of the Biophysical Profile? - AnswersAmniotic fluid volume
Fetal tone
Fetal activity
Fetal breathing movements
NST
,Which chemical is seen in higher concentrations in the amniotic fluid when the lung matures? -
AnswersLecithin increases as the lungs mature, while sphingomyelin decreases beyond about
32 weeks
What is a heterotropic pregnancy? - AnswersWhen there is an intrauterine and an extrauterine
pregnancy simultaneously
What is the treatment of choice for an unruptured ectopic pregnancy? - AnswersMethotrexate
What is the name for the death of an embryo or fetus before 20 weeks with complete retention
of the POC? - AnswersMissed abortion
What is the most common cause of first trimester abortions? - AnswersFetal chromosomal
abnormalities
What are the most common causes (4) of second-trimester abortions? - AnswersUterine or
cervical abnormalties
Trauma
Systemic disease
Infection
What is the definition of recurrent/habitual abortions? - AnswersThree or more consecutive
spontaneous abortions
What additional analyte is sometimes added to the triple test to make the "quad screen?" -
AnswersInhibin A
How many days after fertilization does the blastocyst typically implant into the endometrium? -
Answers7 days
, In which weeks of development does organogenesis take place? - AnswersWeeks 3-8
What level of sensitivity does the triple-test have? - AnswersOnly 60%
but 80% over the age of 35
With a Down syndrome fetus, which of the analytes in the triple test are elevated and which are
decreased? - AnswersMSAFP - decreased
estriol - decreased
BHCG - increased
What percentage of amniocenteses have complications? - Answers0.5%
Complications include ROM, premature labor, fetal injury
At which week gestation can CVS be performed? - Answers9 weeks (six weeks earlier than
amniocentesis)
What problems are associated with performing CVS before 9 weeks? - AnswersLimb
abnormalities
What is fetal lie (what are the options/classifications)? - AnswersEither longitudinal or
transverse in the uterus
What is fetal presentation (what are the options/classifications)? - AnswersEither breech or
cephalic
What does the P in PROM stand for? What is the definition? - AnswersPremature Rupture of
Membranes
