HUF2-2&3 Lung compliance and airway resistance I&II

[Modified from FA] Restrictive lung disease is characterized by

• reduced FEV1/FVC

• reduced FEV1 with decrease in FEV1/FVC

• increased FEV1/FVC

• increased FEV1 without decrease in FEV1/FVC

• reduced FVC without decrease in FEV1/FVC

The lung compliance is larger in what conditions?

• lung volume is smaller

• lung volume is larger

• transpulmonary pressure is smaller

• transpulmonary pressure is greater

• Emphysema

What is the etiology of the difficulty of breathing in a neonate with RDS?

• Viral infection of type II alveolar cells

• Partial collapse of the lung

• Cardiac failure

• Surfactant deficiency

• Birth in "late-term"

What is the major ingredient in the pulmonary surfactant?

• Diphosphotidylcholine (DPPC)

• Phospholipids

• Lipids

• Cholesterol

• Protein

Dipalmitoylphosphatidylcholine (DPPC) in pulmonary surfactant consists of

• Hydrophobic Dipalmitoyl and Hydrophobic Choline

• Hydrophobic Dipalmitoyl and Hydrophilic Choline

• Hydrophilic Dipalmitoyl and Hydrophobic Choline

• Hydrophilic Dipalmitoyl and Hydrophilic Choline

• A mixture of phospholipids, lipids, and protein

What is the major factor that accounts for the hysteresis of the P-V curve?

• Elasticity of lung tissue

• Surface tension

• Frictional resistance to air movement

• Surfactant recruitment to alveolar surface during lung inflation, which decreases elastic recoil

• Lung capacity

During inspiration, the lung expand easier with time. Which factor best account for that?

• Elasticity of lung tissue

• Surface tension

• Frictional resistance to air movement

• Surfactant recruitment to alveolar surface during lung inflation, which decreases elastic recoil

• Lung capacity

Rank the compliances of different lung conditions from low to high.

• Emphysema, Fibrosis, Normal

• Fibrosis, Emphysema, Normal

• Emphysema, Normal, Fibrosis

• Fibrosis, Normal, Emphysema

• Normal, Emphysema, Fibrosis

Lung compliance can be measured on which graph?

• Static P-V curve on the left

• Static P-V curve on the right

• Dynamic P-V curve on the left

• Dynamic P-V curve on the right

• Both P-V curves

Check the correct descriptions of a typical emphysema patient.

• Destruction of alveolar wall

• Thickening of lung tissues

• Increase in lung stretchability

• Decrease in lung compliance

• Increase in lung compliance