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ACNP 1 > PFTs > Flashcards

PFTs Flashcards

1
Q

What variable must you have for an accurate PFT?

A

Age
Race
Weight
Gender

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2
Q

What is the most common type of PFT? What does it determine?

A

Spirometry

Airflow- how easily air can move in
Volume- how easily air can move out

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3
Q

What is the inspiration reserve volume?

A

How much air inspiration is left after normal inspiration

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4
Q

Expiratory reserve volume is what?

A

How much forced air is available after normal exhalation

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5
Q

Tidal volume is what? Ways the normal range?

A

The amount of air in and out on normal breathing

500mL

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6
Q

What is the residual volume?

A

The amount of air left in lungs after forces exhalation (unmeasurable with spirometer)

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7
Q

Vital capacity is what?

A

Max in and out with forced inhalation and exhalation

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8
Q

Inspiratory capacity is what?

A

All the air that can be forced in with one breath

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9
Q

Total lung capacity is what?

A

Total air in lungs

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10
Q

Functional residual capacity is what?

A

What is left in lungs after normal evaluation ( to include residual volume)

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11
Q

What is FEV1?

A

Forced exhalation after 1 sec

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12
Q

FEV1/FVC is what?

A

Measures what percentage of the total forced vital capacity is expelled after the first second of forced exhalation

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13
Q

Name 5 obstructive lung problems

A 
1. COPD
2 mucous plugging (CF)
3. Foreign body
4. Tumor
5. Asthma
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14
Q

Name causes of restrictive lung diseases?

A
  1. Sarcoidosis
  2. TB
  3. Pickwickian
  4. Neuromuscular
  5. Ascites
  6. Pleural effusion
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15
Q

What is the normal FEV1? How do restrictive and obstructive Dx show this differently?

A

85-120%

Obstructive- in the 60%s

Restrictive 70% +

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16
Q

What is the normal FVC? How does it show differently in obstructive vs restrictive disease

A

85-120%

Obstructive in 60s

Restrictive 70s or up

17
Q

FEV/FVC ratio normal is what? How do you differentiate between restrictive vs obstructive disease?

A

> 70% is normal

If higher then restrictive

If 69 or lower obstructive

18
Q

What is the normal range for DLCO? What does it tell you?

A

80-120%

I’d lower then intrinsic restrictive or obstructive disease

19
Q

What’s the normal TLC? How do you tell if it’s obstructive vs restrictive?

A

75-100%

COPD will be increased

20
Q

Staging of PFT:

What percentages qualify for mild moderate or severe disease?

A

Normal PEV1 or FVC >85%

Mild- 65-84%
Moderate- 50%-64%
Severe-

21
Q

What is the definition of chronic bronchitis?

A

3 months of symptoms of chronic cough over the last two years

ACNP 1 (12 decks)

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