Ch 52 Obstetric Measurements & Gestational Age
(Complete solutions)
The abdominal circumference (AC) is taken at the:
A) Diameter of the fetal abdomen
B) Level of the stomach, left portal vein, and left umbilical vein
C) Diameter of the fetal abdomen at the level of the kidneys and diaphragm
D) Level of the kidneys and bladder correct answers Level of the stomach, left portal vein and
left umbilical vein
Which one of the following sonographic signs refers to the shape of the cerebellum when a
spinal defect is present?
A) Sandwhich
B) Stawberry
C) Banana
D) Lemon correct answers Banana
The biparietal diameter (BPD) is the measurement of the fetal head at the level of the:
A) Thalamus and cavum septum pellucidum (CSP)
B) Frontal horns and third ventricle
C) Peduncles and septum pellucidum
D) Thalamus and fourth ventricle correct answers Thalamus and cavum septum pellucidum
(CSP)
The condition that shows the fetal head elongated in the transverse diameter and shortened in the
anteroposterior diameter is known as: correct answers Brachycephaly
Which one of the following measurements is the most accurate for determining gestational age in
the first trimester? correct answers Crown-rump length (CRL)
The plane used for coronal head circumference (CHC) should include which structures? correct
answers Thalamus and brainstem
When measuring the gestational sac, all of the following statements are true EXCEPT:
A) A distended urinary bladder an compress the sac from round to ovoid
B) If the sac is round, one diameter should be measured
C) If the sac is ovoid, measurements cannot be obtained
D) If the sac is ovoid, the anteroposterior and width is measured to obtain mean diameter correct
answers If the sac is ovoid, measurements cannot be obtained
(Complete solutions)
The abdominal circumference (AC) is taken at the:
A) Diameter of the fetal abdomen
B) Level of the stomach, left portal vein, and left umbilical vein
C) Diameter of the fetal abdomen at the level of the kidneys and diaphragm
D) Level of the kidneys and bladder correct answers Level of the stomach, left portal vein and
left umbilical vein
Which one of the following sonographic signs refers to the shape of the cerebellum when a
spinal defect is present?
A) Sandwhich
B) Stawberry
C) Banana
D) Lemon correct answers Banana
The biparietal diameter (BPD) is the measurement of the fetal head at the level of the:
A) Thalamus and cavum septum pellucidum (CSP)
B) Frontal horns and third ventricle
C) Peduncles and septum pellucidum
D) Thalamus and fourth ventricle correct answers Thalamus and cavum septum pellucidum
(CSP)
The condition that shows the fetal head elongated in the transverse diameter and shortened in the
anteroposterior diameter is known as: correct answers Brachycephaly
Which one of the following measurements is the most accurate for determining gestational age in
the first trimester? correct answers Crown-rump length (CRL)
The plane used for coronal head circumference (CHC) should include which structures? correct
answers Thalamus and brainstem
When measuring the gestational sac, all of the following statements are true EXCEPT:
A) A distended urinary bladder an compress the sac from round to ovoid
B) If the sac is round, one diameter should be measured
C) If the sac is ovoid, measurements cannot be obtained
D) If the sac is ovoid, the anteroposterior and width is measured to obtain mean diameter correct
answers If the sac is ovoid, measurements cannot be obtained
