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Amniotic Fluid Lesson 14

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Questions and Answers

Which of the following is an indication for performing amniocentesis?

Elevated maternal serum alpha-fetoprotein (correct)

Maternal age of 35

Fetal heart rate of 120 bpm

Previous cesarean section

What is the purpose of the Kleihauer-Betke test?

To diagnose Rh HDN

To determine fetal lung maturity

To differentiate maternal blood from fetal blood (correct)

To assess fetal distress

What is the normal ratio of lecithin to sphingomyelin in the L/S ratio test?

2:1 (correct)

4:1

1:1

3:1

What is the indication of a L/S ratio of less than 1.6?

Respiratory distress syndrome Signup and view all the answers

What is the purpose of the foam/shake test?

To determine fetal lung maturity Signup and view all the answers

What is the value of the foam stability index that indicates fetal lung maturity?

47 Signup and view all the answers

What is the primary function of amniotic fluid in the first trimester?

Provides a protective cushion to the developing embryo/fetus Signup and view all the answers

What is the major source of amniotic fluid in the succeeding trimesters?

Fetal urine Signup and view all the answers

What is the term for excess amniotic fluid, often associated with fetal distress?

Polyhydramnios Signup and view all the answers

What is the recommended maximum volume of amniotic fluid to be collected during amniocentesis?

30 ml Signup and view all the answers

At what gestational age is amniocentesis generally considered a safe procedure?

14th week of gestation Signup and view all the answers

What is the primary indication for performing amniocentesis between the 15th to 18th weeks of gestation?

Mother's age ≥ 35 years old at delivery Signup and view all the answers