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DOS (PFT’s) > DOS 2 > Flashcards

DOS 2 Flashcards

1
Q

Normal DLco

A

25mL (20-30 aka +/-5%)

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2
Q

FEV1% levels for restrictive/obstructive

A

It will be normal or increased in restrictive

Decreased in obstructive

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3
Q

TLC levels in restrictive/obstructive

A

ALWAYS decreased in restrictive

Normal or increased in obstructive

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4
Q

Normal FEV1%

A

75-85%

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5
Q

Normal TLC

A

100mL/cmH2O

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6
Q

Gold standard severity scale for COPD

A 
**Uses FEV1 value pre/post
mild >/= 80%
moderate 50-79
severe 30-49
very severe <30%
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7
Q

Normal RV/TLC

A

25-35%

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8
Q

A flow-volume loop that shows a flattening on the inhalation and exhalation indicates what?

A

A fixed obstruction of the large airway

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9
Q

What obstructive diseases will present with a normal DLco?

A

Emphysema and Cystic Fibrosis

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10
Q

What obstructive diseases will present with a normal DLco?

A

Emphysema and Cystic Fibrosis

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11
Q

What does a SVC being larger than the FVC indicate

A

In obstructive disorders this indicates airway collapse on exhalation

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12
Q

What volumes/capacities cannot be obtained via simple spirometry?

A

TLC/RV/FRC

**FRC is needed to calculate RV and TLC

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13
Q

What ways can you obtain TLC,RV, and FRC?

A

Helium washout, Nitrogen wash, and body plehty….

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14
Q

closed circuit wash

A

He (helium) wash

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15
Q

open circuit wash

A

Nitrogen wash

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16
Q

DLCO/AV assesses what type of disorders?

A

Restrictive into intra and extra thoracic

17
Q

DLCO/AV in intrathoracic vs extrathoracic restrictive disorders

A

DLCO will be decreased in intrathoracic and appear normal in extrathoracic disorders

18
Q

FEF 25-75% asseses what?

A

dz in the smaller airway

19
Q

What value asseses the large airways?

A

FEF 200-1200

20
Q

What indicates an airway collapse or spasm of an obstructive disorder?

A

SVC that is significantly greater than FVC

DOS (PFT’s) (4 decks)

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