19 Jan A preterm infant has a surfactant deficiency. Without surfactant, many of the alveoli collapse at the end of each expiration, which in turn leads to pulmonary failure. Which of the followi
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Question 2
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QUESTION TEXT
A preterm infant has a surfactant deficiency. Without surfactant, many of the alveoli collapse at the end of each expiration, which in turn leads to pulmonary failure. Which of the following sets of changes are present in the preterm infant, compared to a normal infant?
Select one:
A. ALVEOLAR SURFACE TENSION INCREASES AND PULMONARY COMPLIANCE DECREASES
B. BOTH ALVEOLAR SURFACE TENSION PULMONARY COMPLIANCE ARE INCREASED
C. ALVEOLAR SURFACE TENSION INCREASES AND PULMONARY COMPLIANCE DOES NOT CHANGE
D. BOTH ALVEOLAR SURFACE TENSION PULMONARY COMPLIANCE ARE DECREASED
E. ALVEOLAR SURFACE TENSION DECREASES AND PULMONARY COMPLIANCE INCREASES
QUESTION 3
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Airway resistance work is decreased in obstructive airway diseases
Select one:
A. FALSE
B. TRUE
QUESTION 4
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Which of the following determines lung compliance
Select one:
A. ALVEOLAR SURFACE TENSION
B. MUSCLES OF INSPIRATION
C. AIRWAY OPENING
D. FLEXIBILITY OF THE THORACIC CAGE
E. MUSCLES OF INSPIRATION
QUESTION 5
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QUESTION TEXT
Surfactant helps to prevent the alveoli from collapsing by:
Select one:
A. WARMING THE AIR BEFORE IT ENTERS
B. PROTECTING THE SURFACE OF ALVEOLI FROM FOREIGN PARTICLES
C. HUMIDIFYING THE AIR BEFORE IT ENTERS
D. INTERFERING WITH THE INTER ATTRACTION OF WATER MOLECULES, THEREBY REDUCING THE SURFACE TENSION OF ALVEOLAR FLUID
E. PROTECTING THE SURFACE OF ALVEOLI FROM DEHYDRATION AND OTHER ENVIRONMENTAL VARIATIONS
QUESTION 6
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Which of the following is TRUE concerning respiratory distress syndrome in
premature infants
Select one:
A. ALVEOLAR SURFACE TENSION DOESNT CHANGE
B. ALVEOLI ARE ALWAYS KEPT OPENED
C. LUNG COMPLIANCE IS NORMAL
D. THEIR ABILITY TO SYNTHESIZE SURFACTANT IS SEVERELY DECREASED
E. NO HIGHER PRESSURES ARE REQUIRED TO VENTILATE THE LUNGS
QUESTION 7
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Airway resistance work is increased in obstructive airway diseases
Select one:
TRUE
FALSE
QUESTION 8
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In compliance work, energy is required to overcome the viscosity of lung tissues and tissues of thoracic cage
Select one:
TRUE
FALSE
QUESTION 9
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Lung compliance increases in
Select one:
A. LUNG FIBROSIS
B. PARALYSIS OF RESPIRATORY MUSCLES
C. EMPHYSEMA
D. DEFORMITIES OF THORAX LIKE KYPHOSIS AND SCOLIOSIS
E. PLEURAL EFFUSION
QUESTION 10
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QUESTION TEXT
Surfactant can
Select one:
A. WARM THE AIR BEFORE IT ENTERS
B. HUMIDIFY THE INSPIRED AIR BEFORE IT ENTERS.
C. INTERFERE WITH THE INTER ATTRACTION OF WATER MOLECULES, THEREBY REDUCING THE SURFACE TENSION OF ALVEOLAR FLUID
D. PROTECT THE SURFACE OF ALVEOLI FROM FOREIGN PARTICLES
E. HELP TO COLLAPSE THE ALVEOLI
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