Deck 5: Ultrasound in the Second and Third Trimesters

Question 1

According to menstrual history, a woman is in the 17^th week of gestation. She has not had a previous ultrasound examination and the practitioner would like to evaluate fetal growth and gestational age. When is the best time to schedule the ultrasound examination?

A) The examination should be scheduled for one month later.
B) The examination must be scheduled for that day or the next.
C) The examination won't be affected by the appointment date.
D) The examination could be scheduled within the next 2 weeks.

Answer 1

D

Question 2

Which of the following is an indication for second or third-trimester standard ultrasound examination? Select all that apply.

A) Evaluate vaginal bleeding
B) Assess for ectopic pregnancy.
C) Measure nuchal translucency.
D) Screen for fetal abnormalities.
E) Remove an intrauterine device.

Answer 2

A, B, D

Question 3

A mother is having an ultrasound examination to assess for fetal growth in the second trimester. She asks the practitioner why the due date won't be adjusted based on the findings of the new ultrasound examination. Which is the best response by the practitioner?

A) Recalculating the due date at this time could create confusion about your care plan.
B) Adjusting the due date at this time could generate difficulty with genetic evaluation.
C) Recalculating the due date at this time could cause us to miss a fetal growth problem.
D) Adjusting the due date at this time could make it difficult to know when you are in labor.

Answer 3

C

Question 4

When completing fetal biometry in the second or third trimester, the practitioner should prepare to complete which measurements? Select all that apply.

A) Fetal femur length.
B) Fetal crown-rump length.
C) Fetal head circumference.
D) Fetal head biparietal diameter.
E) Fetal abdominal circumference.

Question 5

The practitioner who is supervising a student of ultrasound notes that the student measures the fetal biparietal diameter using the inner distal edge of the skull. Which is the best response to this observation?

A) Allow the student to continue with fetal measurements without interfering.
B) Inform the student that the measurement must be repeated using the outer edge.
C) Let the student proceed with the exam and provide correction away from the patient.
D) Have the student stop, review the standards for fetal measurement, and resume the exam.

Question 6

The practitioner is preparing to complete fetal measurements to assess fetal age at about 13 ½ weeks gestation. Which is best for the practitioner use at this time?

A) Fetal weight.
B) Fetal femur length.
C) Head circumference.
D) Fetal biparietal diameter.

Question 7

The practitioner completed fetal femur length measurements at 34 weeks gestation using the deeper visible femur. Which is the best interpretation of the practitioner's actions?

A) This is the accepted, standard practice for fetal femur measurement.
B) The practitioner is placing the fetus in immediate danger with these techniques.
C) The practitioner could cause the misdiagnosis of fetal conditions with this method.
D) This is only a portion of the standard practice; additional considerations are needed.

Question 8

The practitioner learning ultrasound techniques is preparing to complete the abdominal circumference measurement as part of a full ultrasound examination. The practitioner places the transducer to obtain a longitudinal image. Which is the best response by the supervising practitioner?

A) Ask the student to adjust the transducer to obtain a transverse image.
B) Allow the student to continue measurements using the technique.
C) Have the student give the transducer to the supervisor to do the measurement.
D) Tell the student the technique is incorrect and the full exam must be repeated.

Question 9

The practitioner caring for a pregnant woman is monitoring the fetus for concerns of growth issues. How often should the practitioner complete scans to evaluate continued growth?

A) Every one to two weeks.
B) Every two to three months.
C) Every three to four weeks.
D) Every four to six months.

Question 10

The practitioner performing an ultrasound notes a two-vessel umbilical cord. Which is the best follow-up action to this finding?

A) Analyze the fetal kidney function.
B) Carefully examine all other fetal structures.
C) Document the finding in the medical record.
D) Complete a thorough fetal cardiac assessment.