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Third Trimester

Terms in this set (44)

The most commone maternal factor associated with IUGR?
A. obesity
B. HTN
C. hyperlipidemia
D. DM
E. Oligo
B. HTN
Polyhydramnios demonstrates an amniotic volume index greater than:
A. 5 cm
B. 10 cm
C. 15 cm
D. 20 cm
E. 28 cm
D. 20 cm
The distal femoral epiphysis is consistently visualized by:
A. 20 weeks
B. 28 weeks
C 32 weeks
D. 35 weeks
E. 38 weeks
C. 32 weeks
Oligohydramnios in the third trimester is most likely a result of:
A. anencephaly
B. duodenal atresia
C. diaphragmatic hernia
D. infantile polycystic disease
E. cystic adenomatoid malformation
D. infantile polycystic disease
The most common maternal cause of macrosomia is:
A. anemia
B. proteinuria
C. HTN
D. DM
E. cigarette smoking
D. DM
Which portion of the BPP study is a chronic marker of fetal hypoxia?
A. fetal tone
B. nonstress test
C. fetal movement
D. amniotic fluid volume
E. maturity of the placenta
D. amniotic fluid volume
When measuring AFI, the transducer must remain:
A. parallel to both the maternal sagittal and coronal planes
B. perpendicular to both the maternal sagittal and coronal planes
C. parallel with the maternal coronal plane and perpendicular to the sagittal plane
D. perpendicular to the maternal coronal plane and parallel to the maternal sagittal plane
E. parallel with the maternal transverse plane and perpendicular to the sagittal plane
D. perpendicular to the maternal coronal plane and parallel to the maternal sagittal plane
A pregnancy is postterm when the:
A. fetus weighs more than 3000 g
B. pregnancy is longer than 40 weeks
C. fetus weighs more than 4000 g
D. pregnancy is longer than 42 weeks
E. fetus weighs more than 4500 g
D. pregnancy is longer than 42 weeks
third trimester is weeks 30-42
Symmetric IUGR is more commonly a result of:
A. maternal diabetes
B. first trimester insult
C. maternal HTN
D. placental insufficiency
E. second trimester insult
B. first trimester insult
associated with maternal HTN & placental insufficiency
Doppler of the UA evaluates fetal well-being using the:
A. resistive index
B. pulsatility index
C. peak systolic velocity
D. end diastolic velocity
E. systolic-diastolic ratio
E. systolic-diastolic ratio
Macrosomia is defined as a newborn weight exceeding:
A. 1000 g
B. 2500 g
C. 4000 g
D. 5500 g
E. 6000 g
C. 4000 g
or above the 90th percentile
In a BPP, which of the following will document fetal tone:
A> fetal swallowing or urination
B. movement of the fetal diaphragm
C. three separate fetal movements in 30 seconds
D. two fetal heart accelerations within 20 min
E. complete episode of flexion to extension and back to flexion
E. complete episode of flexion to extension and back to flexion
Documentation of fetal position demonstrates a frank breech presentation. This means the fetal head is located in the superior portion of the uterus and the:
A. buttocks are down with one foot presenting
B. fetal foot is presenting with one leg extended
C. fetal fett are presenting with both legs extended
D. buttocks are presenting with the feet near the head
E. buttocks are presenting with the knees bent and feet down
D. buttocks are presenting with the feet near the head
Maternal HTN is defined as a systolic pressure above:
A. 90 mmHg
B. 100 mmHg
C. 140 mmHg
D. 175 mmHg
E. 180 mmHg
C. 140 mmHg
Oligohydramnios is defined as an AFI below:
A. 2 cm
B. 5 cm
C. 10 cm
D. 18 cm
E. 24 cm
B. 5 cm
Overall accuracy in sonographic estimation of fetal fetal weight during the third trimester is:
A. 25%
B. 50%
C. 65%
D. 75%
E. 95%
E. 95%
Comparison of the AC to the HC during the early third trimester demonstrates a:
A. equal HC compared to AC
B. AC twice as large as the HC
C. HC slightly larger than the AC
D. AC slightly larger than HC
E> HC approximately one third of the AC
C. HC slightly larger than the AC
Asymmetric IUGR is usually a result of:
A. preeclampsia
B. maternal obesity
C. gestational diabetes
D. multifetal gestations
E. placental insufficiency
E. placental insufficiency
The most common cause of IUGR
Estimated fetal weight is most commonly calculated using which biometric parameters?
A. FL and AC
B. AC, FL, BPD
C. HC, AC, FL
D. BPD, HC, AC
E. BPD, HC to AC ratio, FL
C. HC, AC, FL
IUGR most severly affects which fetal body organ?
A. heart
B. liver
C. brain
D. kidney
E. stomach
B. liver
Assessing the total amount of amniotic fluid within the gestational sac using the sum of four equal quadrants is termed?
A. pocket index
B. total urine vol
C. AFI
D. Amniotic fluid volume
E. maximum pocket ration
C. AFI
The single most sensitive indicator of IUGR is:
A. FL
B. BPD
C. HC
D. AC
E. HC to AC ratio
D. AC
WHich of the following conditions increases fetal risk of injury during vaginal delivery?
A. macrosmia
B. microcephaly
C. cephalic presentation
D. lateral placental placement
E. IUGR
A. macrosomia
WHich technique is both valid and reproducible when assessing amniotic fluid volume
A. uterine vol
B. AFI
C. single vertical pocket
D. subjective assessment
E. maximum vertical pocket
B. AFI
Macrosomia and polyhydramnios encounteres in the third trimester should raise suspicion of maternal:
A. proteinuria
B. preeclampsia
C. HTN
D. DM
E. drug or alcohol abuse
D. DM
A BPP exam of a 35- week fetus demonstrates a complete extension and flexion of lower extremities, four separate fetal movements, AFI of 10 cm, and a normal NST. Fetal diaphragm or breathing motion is not identified. On the basis of these sonographic findings, the BPP score would be:
A. 2
B. 5
C. 8
D. 10
E. 15
C. 8
WHat is the most common cause of painless vaginal bleeding during the third trimester?
A. preterm labor
B. placenta previa
C. placenta accreta
D. placenta abruption
E. incompetent cervix
B. placenta previa
Which of the following correctly describes the expected US findings with asymmetric IUGR?
A. decrease in HC and FL
B. decrease in AC and FL
C. normal HC and decrease in AC
D. normal AC and decrease in HC
E. increase in HC and decrease in AC
C. normal HC and decrease in AC
normal FL growth
IUGR is defined as a fetal weight:
A. below the 5th percentile for gestational age
B. below the 10th percentile for gestational age
C. at or below the 5th percentile for gestational age
D. at or below the 10th percentile for gestational age
E. at or below the 2nd percentile for gestational age
D. at or below the 10th percentile for gestational age
The best diagnostic accuracy of IUGR is offered when evaluating the:
A. AFI, HC, AC
B. placental maturity, UA, AFI
C. HC, AC, FL
D. cephalic index, AC, placental maturity
E. AFI, estimated fetal weight, maternal blood pressure
E. AFI, estimated fetal weight, maternal blood pressure
A TRV fetal position in the late third trimester of pregnancy is most likely associated with:
A. macrosmia
B. fetal hypoxia
C. placenta previa
D. poly
E. IUGR
C. placenta previa
WHich of the following fetal positions is at most risk for cord prolapse?
A. vertex
B. oblique
C. transverse
D. frank breech
E. incomplete breech
E. incomplete breech
AKA foot breech
The BPP is a sonographic method of evaluating fetal:
A. age
B. weight
C. movement
D. well-being
E. swallowing
D. well-being
A fetus presents with multicystic dysplastic renal disease. The AFI is expected to appear:
A. above normal
B. below normal
C. slightly lower than normal
D. slightly higher than normal
E. normal
E. normal
Unilateral, contralateral kidney will continue normal urinary function allowing AFI to be normal
Which of the following maternal conditions is most likely to result in a growth-restricted fetus?
A. obesity
B. diabetes
C. drug abuse
D. hypotension
E. DVT
C. drug abuse
ass well as HTN and poor nutrition
Interval fetal growth can be determined with US exams performed a minimum of how many weeks apart?
A. 1
B. 3
C. 5
D. 7
E. 8
B. 3 weeks
Which of the following is NOT a function of the amniotic fluid?
A. protects fetus from injury
B. allows free fetal movement
C. stores protein, calcium, and iron
D. allows symmetric fetal growth
E. maintains intruterine temp
C. stores protein, calcium, and iron
Which of the following is a sonographic finding in cases of asymmetric IUGR?
A. placentomegaly
B. poly
C. short femur length
D. normal BPD
E. normal AC
D. normal BPD
AC will show a decrease in growth
A systolic-to-diastolic ratio of the UA can be used to evaluate fetal well-being:
A. any time during the pregnancy
B. after the 30th week of gestation
C. after the first trimester pf pregnancy
D. beginning the 20th week of gestation
E. beginning the third trimester of pregnancy
B. after the 30th week of gestation
Ratio of greater than 3.0 after 30 weeks is abnormal
The single most useful biometric parameter to assess fetal growth is the:
A. FL
B. cerebellar width
C. BPD
D. HC
E. AC
E. AC
The term indicated the fetal head is located in the uterinr fundus:
A. vertex
B. breech
C. oblique
D. cephalic
E. transverse
B. breech
A fetus presenting in the breech position during the third trimester may demonstrate a cranial shape termed:
A. lemon sign
B. clover-leaf
C. dolichocephalic
D. bracycephalic
E. strawberry sign
C. dolichocephalic
elongated head
If a fetus is lying perpendicular to the maternal sagittal plane, the fetal presentation is:
A. vertex
B. breech
C. oblique
D. cephalic
E. transverse
E. transverse
Visualization of the proximal tibial epiphysis first occurs around:
A. 20 weeks
B. 24 weeks
C. 30 weeks
D. 35 weeks
E. 38 weeks
D. 35 weeks
visualization of distal femorl epiphysis is around 32weeks
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