TEST FOR FETAL MATURITY

Question 1

The amount of surfactant in fetal lungs can be estimated by measuring the amount of surfactants in amniotic fluid

Answer 1

Fetal Lung Maturity

Question 2

caused by an insufficiency of lung surfactant production and structural immaturity of the fetal lungs

Answer 2

Respiratory Distress Syndrome (RDS)

Question 3

Prior to 35 weeks gestation - L/S ratio:

Answer 3

usually less than 1.6

Question 4

After 35 weeks gestation - L/S ratio:

Answer 4

rise to 2.0 or higher

Question 5

Therefore, when the L/S ratio reaches ____, a preterm delivery is usually considered to be a relatively safe procedure.

Answer 5

2.0

Question 6

Many labs replace L/S ratio with:

Answer 6

1. Qualitative phosphatidyl glycerol
   immunoassays
2. Lamellar body density procedure

Question 7

Can be detected after 35 weeks gestation

Answer 7

Phosphatidyl glycol

Question 8

Immunologic agglutination test; rapid

Answer 8

Phosphatidyl glycol

Question 9

Not affected by specimen contamination with blood and meconium

Answer 9

Phosphatidyl glycol

Question 10

To determine the presence of individual lungsurface lipid concentrations

Answer 10

Foam stability index

Question 11

Densely packed layers of phospholipids that represent a storage form of pulmonary surfactant; secreted by the type ii pneumocytes of the fetal lung at about 24 weeks of gestation and are absorbed into the alveolar spaces to
provide surfactant

Answer 11

Lamellar bodies

Question 12

As the fetal lung matures, increased lamellar body production is reflected by an increase in amniotic fluid phospholipids and the l/s ratio

Answer 12

Lamellar bodies

Question 13

Lamellar bodies uses test performed using

Answer 13

hematology analyzer
(platelet parameter)