Deck 34: Transient Tachypnea of the Newborn

Question 1

The causes of TTN include:
1) mother's diagnosis of cystic fibrosis.
2) infant's hypoxemia.
3) mother's hypoxemia.
4) infant's inadequate inspiratory effort.

A) 1, 3
B) 2, 4
C) 2, 3, 4
D) 1, 2, 3

Answer 1

2, 4

Question 2

All of the following radiologic findings would be expected in a 12-hour-old neonate with TTN EXCEPT:

A) air bronchograms.
B) fluid in the interlobular fissures.
C) elevated diaphragms.
D) prominent perihilar streaking.

Answer 2

elevated diaphragms.

Question 3

All of the following are usually performed in the general management of a patient with TTN EXCEPT:

A) oxygen therapy administration.
B) administration of diuretics.
C) proper stabilization.
D) ruling out other serious conditions.

Answer 3

administration of diuretics.

Question 4

An infant with a mild case of TTN will show which of the following arterial blood gas value(s)?
1) Increased pH
2) Decreased pH
3) Low PaO₂
4) Low PaCO₂

A) 4
B) 3, 4
C) 2, 3
D) 1, 3, 4

Question 5

On a chest radiograph, starbursts are indicative of:

A) bacterial pneumonia.
B) carinal carcinoma.
C) pulmonary vascular congestion.
D) foreign body aspiration.

Question 6

Risk factors for the development of TTN include:
1) maternal diabetes.
2) male gender.
3) maternal bleeding.
4) breech delivery.

A) 1, 3
B) 2, 4
C) 1, 3, 4
D) 1, 2, 3

Question 7

Which of the following clinical manifestations are associated with the more negative intrapleural pressures needed during inspiration?
1) Thick, tenacious secretions
2) Intercostal retractions
3) Nasal flaring
4) Mediastinal shift

A) 1, 3
B) 2, 3
C) 2, 3, 4
D) 1, 2, 3, 4

Question 8

Which of the following oxygenation indices would be elevated in TTN?

A) Arterial-venous oxygen content difference
B) Oxygen consumption
C) Mixed venous oxygen saturation
D) Pulmonary shunt fraction

Question 9

At what gestational age is TTN most common?

A) 26 to 28 weeks' gestational age
B) 28 to 30 weeks' gestational age
C) 34 to 36 weeks' gestational age
D) 38 to 40 weeks' gestational age

Question 10

What are the radiologic findings anticipated on a chest radiograph taken 2 hours after delivery in a newborn suspected of having TTN?

A) Normal lung fields
B) Hyperlucency
C) Flattened diaphragms
D) Bulging intercostal spaces

Question 11

The major pathologic and structural changes associated with TTN include:
1) decreased removal of fluid by pulmonary lymphatics.
2) air trapping.
3) pleural effusion.
4) atelectasis.

A) 1, 2
B) 3, 4
C) 1, 2, 3
D) 2, 3, 4

Question 12

Which of the following breathing patterns are associated with TTN?
1) Normal rate
2) Rapid rate
3) Higher than normal tidal volume
4) Shallow tidal volume

A) 1, 3
B) 2, 3
C) 1, 4
D) 2, 4

Question 13

What respiratory rate would be expected during the physical exam of a patient with TTN?

A) 80 to 120 breaths/min
B) 30 to 40 breaths/min
C) 20 to 30 breaths/min
D) Less than 20 breaths/min

Question 14

Initially, TTN will have a clinical presentation similar to:

A) the early stage of respiratory distress syndrome (RDS).
B) the late stage of respiratory distress syndrome (RDS).
C) bronchial pneumonia.
D) meconium aspiration syndrome (MAS).

Question 15

How soon will TTN begin to resolve after birth?

A) 4 to 6 hours after birth
B) 12 to 24 hours after birth
C) 48 to 72 hours after birth
D) 72 to 96 hours after birth

Question 16

In reviewing the chart of a neonate who has developed TTN, what is a likely finding related to the Apgar score?

A) The 1- and 5-minute scores are good.
B) The 1-minute score is good and 5-minute score is bad.
C) The 1-minute score is bad and 5-minute score is good.
D) Both scores are bad.

Question 17

Initially, a mild case of TTN manifests itself clinically as a(n) _____ disorder.

A) restrictive pulmonary
B) obstructive pulmonary
C) equally restrictive and obstructive
D) initially obstructive and then a progressively restrictive