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Advanced Health Assessment > Exam 2: Pulmonary Function Test > Flashcards

Exam 2: Pulmonary Function Test Flashcards

1
Q

What do pulmonary function tests (PFTs) measure?

A

How well the lungs work

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2
Q

What are some common respiratory symptoms that may indicate the need for a PFT?

A
  • Dyspnea
  • Cough
  • Cyanosis
  • Wheezing
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3
Q

What is the purpose of conducting pulmonary function tests?

A
  • Look for evidence of respiratory disease
  • Assess for progression of lung disease
  • Monitor treatment efficacy
  • Evaluate patients pre-operatively
  • Monitor for toxic side effects of drugs
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4
Q

What does ERV stand for in pulmonary function tests?

A

Expiratory reserve volume

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5
Q

What is the definition of Total Lung Capacity (TLC)?

A

The volume in the lungs at maximal inflation, the sum of VC and RV

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6
Q

What does VC stand for in the context of lung volumes?

A

Vital capacity

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7
Q

What is the formula for Inspiratory Capacity (IC)?

A

The sum of IRV and TV

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8
Q

What is Forced Vital Capacity (FVC)?

A

The determination of vital capacity from a maximally forced expiratory effort

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9
Q

What is the significance of the FEV1/FVC ratio?

A

It indicates lung disease; normal is about 80%

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10
Q

What FEV1/FVC ratio suggests obstructive lung disease?

A

FEV1/FVC < 80%

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11
Q

What pattern is indicated by decreased FEV1, normal or decreased FVC, and decreased FEV1/FVC?

A

Obstructive Pattern

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12
Q

What condition is suggested by an increase in FEV1 by 12% after bronchodilator use?

A

Asthma

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13
Q

What characterizes a restrictive pattern in PFTs?

A
  • Decreased TLC
  • Decreased FEV1
  • Decreased FVC
  • Normal FEV1/FVC
  • Low DLCO
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14
Q

What does DLCO measure?

A

Diffusion capacity for carbon monoxide

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15
Q

What is the normal range for FEV1/FVC ratio?

A

About 80%

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16
Q

What does an FEV1 of 80-100% predicted indicate?

A

Mild obstruction (Stage 1)

17
Q

What does an FEV1 of <30% predicted indicate?

A

Very severe obstruction (Stage 4)

18
Q

What TLC percentage indicates restrictive disease according to ATS criteria?

19
Q

What TLC percentage range indicates mild restrictive disease?

A

70-80% predicted

20
Q

What TLC percentage indicates moderate restrictive disease?

A

60-70% predicted

21
Q

What TLC percentage indicates severe restrictive disease?

A

<50% predicted

22
Q

What does TLC >120% indicate?

A

Hyperinflation

Advanced Health Assessment (5 decks)

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