NR327 Quiz 3 | Actual verified Study complete
Solutions (Already Passed) | A+ Graded | 2026
Updates | 100% correct
Where do you place a toco transducer? - ANSWER- Over the fundus
-as abdomen gets hard, it will push button on device
Where do we put the ultrasound transducer? - ANSWER- On the back of fetus
What are the two indications for fetal diagnostic testing? - ANSWER- 1. To detect congenital
abnormalities
2. To evaluate the condition of the fetus
What are the kinds of diagnostic test? - ANSWER- ▷︎ Ultrasound
▷︎ Chorionic Villus Sampling (CVS)
▷︎ Amniocentesis
Ultrasound - ANSWER- High-frequency sound waves are aimed at body tissues
✤︎ directed through tissues of the abdomen or vagina to provide two-dimensional images
▷︎ Quick and easy
Three dimensional ultrasound - ANSWER- Images have greater detail
✤︎ they provide more detailed, accurate identification of the extent and size of abnormalities
Real-time scanning ultrasound - ANSWER- ▷︎ Shows movement as it happens
,▷︎ Allows the observer to see fetal heart motion, fetal breathing activity, and fetal body
movement
▷︎ Can distinguish between moving tissues of the fetus and maternal tissues
Ultrasound: Emotional Response - ANSWER- • Some parents are excited.
• Some parents report anxiety.
• Many couples expect to know the gender of the fetus.
• Others do not want to know the gender.
• Sonographers often give parents a still image.
3 different ways to determine gestational age - ANSWER- 1. Naegele's rule
2. Fundal measurement
3. Ultrasound
At 20 weeks where should the fundus be? - ANSWER- At the umbilicus
How will a sonographer measure gestational age using an ultrasound? - ANSWER- From
crown to rump
Levels of obstetrics via Ultrasound - ANSWER- Standard (basic)
✤︎ General survey
▷︎ Example: anatomy scan
Specialized (comprehensive)
✤︎ Specific
▷︎ Example: looking for abnormalities
Limited
✤︎ Address a specific question
▷︎ Example: fetal presentation
,Which type of ultrasound would be used to look for a specific congenital defect? - ANSWER-
Specialized ultrasound
A nurse goes to check the presenting part and touches something squishy but is unsure what
she's feeling. What type of ultrasound would the doctor order to help determine what it is? -
ANSWER- Limited
-help determine fetal presentation
Ultrasound: First Trimester - ANSWER- Purpose
• Confirm pregnancy
• Verify the location of the pregnancy
• Detect multifetal gestations
• Determine gestational age
• Identify markers
• Determine the locations of the uterus, cervix, and placenta for procedures such as chorionic
villus sampling (CVS) (if needed)
Procedure
• done transvaginal
Ultrasound: Second and Third Trimester - ANSWER- Purpose
• Confirm viability
• Evaluate fetal anatomy
• Determine gestational age
• Assess serial fetal growth
• Compare growth of fetuses in multifetal gestations
• Evaluate four of five markers in a biophysical profile (usually during 3rd trimester)
• Locate the placenta when placenta previa is suspected
• Determine fetal presentation
• Guide needle for amniocentesis or percutaneous umbilical cord sampling (PUBS)
, Procedure
• Transabdominal
Specialized ultrasound during 2nd & 3rd trimester - ANSWER- For abnormal findings
• Hydramnios (excessive amniotic fluid)
• Oligohydramnios (insufficient amniotic fluid)
• Abnormal levels of maternal serum alpha-fetoprotein (MSAFP) or other tests in multiple-
marker testing
• Neural tube defects (NTDs) (failure of the bony encasement of spinal cord or skull to close)
Procedure
• Transabdominal
Advantages and disadvantages of an Ultrasound - ANSWER- Advantages
• Allows clear visibility of the fetus and surrounding structures
• Has been proven safe
• Noninvasive
• Results obtained immediately
• Widely available and portable
Disadvantages
• Cost
• Cannot identify all defects
• Suspicious or clearly abnormal images raise parents' anxiety levels
Alpha-Fetoprotein screening test - ANSWER- ✤︎ predominant protein in fetal plasma
✤︎ AFP crosses placental membranes into the maternal circulation
✤︎ AFP can be measured in maternal serum (MSAFP) and amniotic fluid (AFAFP)
Solutions (Already Passed) | A+ Graded | 2026
Updates | 100% correct
Where do you place a toco transducer? - ANSWER- Over the fundus
-as abdomen gets hard, it will push button on device
Where do we put the ultrasound transducer? - ANSWER- On the back of fetus
What are the two indications for fetal diagnostic testing? - ANSWER- 1. To detect congenital
abnormalities
2. To evaluate the condition of the fetus
What are the kinds of diagnostic test? - ANSWER- ▷︎ Ultrasound
▷︎ Chorionic Villus Sampling (CVS)
▷︎ Amniocentesis
Ultrasound - ANSWER- High-frequency sound waves are aimed at body tissues
✤︎ directed through tissues of the abdomen or vagina to provide two-dimensional images
▷︎ Quick and easy
Three dimensional ultrasound - ANSWER- Images have greater detail
✤︎ they provide more detailed, accurate identification of the extent and size of abnormalities
Real-time scanning ultrasound - ANSWER- ▷︎ Shows movement as it happens
,▷︎ Allows the observer to see fetal heart motion, fetal breathing activity, and fetal body
movement
▷︎ Can distinguish between moving tissues of the fetus and maternal tissues
Ultrasound: Emotional Response - ANSWER- • Some parents are excited.
• Some parents report anxiety.
• Many couples expect to know the gender of the fetus.
• Others do not want to know the gender.
• Sonographers often give parents a still image.
3 different ways to determine gestational age - ANSWER- 1. Naegele's rule
2. Fundal measurement
3. Ultrasound
At 20 weeks where should the fundus be? - ANSWER- At the umbilicus
How will a sonographer measure gestational age using an ultrasound? - ANSWER- From
crown to rump
Levels of obstetrics via Ultrasound - ANSWER- Standard (basic)
✤︎ General survey
▷︎ Example: anatomy scan
Specialized (comprehensive)
✤︎ Specific
▷︎ Example: looking for abnormalities
Limited
✤︎ Address a specific question
▷︎ Example: fetal presentation
,Which type of ultrasound would be used to look for a specific congenital defect? - ANSWER-
Specialized ultrasound
A nurse goes to check the presenting part and touches something squishy but is unsure what
she's feeling. What type of ultrasound would the doctor order to help determine what it is? -
ANSWER- Limited
-help determine fetal presentation
Ultrasound: First Trimester - ANSWER- Purpose
• Confirm pregnancy
• Verify the location of the pregnancy
• Detect multifetal gestations
• Determine gestational age
• Identify markers
• Determine the locations of the uterus, cervix, and placenta for procedures such as chorionic
villus sampling (CVS) (if needed)
Procedure
• done transvaginal
Ultrasound: Second and Third Trimester - ANSWER- Purpose
• Confirm viability
• Evaluate fetal anatomy
• Determine gestational age
• Assess serial fetal growth
• Compare growth of fetuses in multifetal gestations
• Evaluate four of five markers in a biophysical profile (usually during 3rd trimester)
• Locate the placenta when placenta previa is suspected
• Determine fetal presentation
• Guide needle for amniocentesis or percutaneous umbilical cord sampling (PUBS)
, Procedure
• Transabdominal
Specialized ultrasound during 2nd & 3rd trimester - ANSWER- For abnormal findings
• Hydramnios (excessive amniotic fluid)
• Oligohydramnios (insufficient amniotic fluid)
• Abnormal levels of maternal serum alpha-fetoprotein (MSAFP) or other tests in multiple-
marker testing
• Neural tube defects (NTDs) (failure of the bony encasement of spinal cord or skull to close)
Procedure
• Transabdominal
Advantages and disadvantages of an Ultrasound - ANSWER- Advantages
• Allows clear visibility of the fetus and surrounding structures
• Has been proven safe
• Noninvasive
• Results obtained immediately
• Widely available and portable
Disadvantages
• Cost
• Cannot identify all defects
• Suspicious or clearly abnormal images raise parents' anxiety levels
Alpha-Fetoprotein screening test - ANSWER- ✤︎ predominant protein in fetal plasma
✤︎ AFP crosses placental membranes into the maternal circulation
✤︎ AFP can be measured in maternal serum (MSAFP) and amniotic fluid (AFAFP)
