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Respiratory Physiology > Lung Volumes and capacities > Flashcards

Lung Volumes and capacities Flashcards

1
Q

What is the average value of:

Tidal Volume

A

500ml

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2
Q

What is the average value of:

Inspiratory Reserve Volume

A

3000ml

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3
Q

What is the average value of:

Inspiratory capacity

A

3500ml

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4
Q

What is the average value of:

Expiratory reserve volume

A

1000ml

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5
Q

What is the average value of:

Residual volume

A

1200ml

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6
Q

What is the average value of:

Functional Residual Capacity

A

2200ml

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7
Q

What is the average value of:

Vital Capacity

A

4500ml

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8
Q

What is the average value of:

Total lung capacity

A

5700ml

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9
Q

What does TV + IRV give?

A

IC (Inspiratory capacity)

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10
Q

What does ERV + RV give?

A

FRC (Functional Residual Capacity)

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11
Q

What does VC +RV give?

A

TLC (Total lung capacity)

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12
Q

What does IRV + TV + ERV give?

A

Vital capacity

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13
Q

What is the tidal volume?

Description

A

Volume of air entering or leaving lungs during a singe breath

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14
Q

What is the inspiratory reserve volume?

Description

A

Extra volume of air that can be maximally inspired over and above the typical resting tidal volume

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15
Q

What is the inspiratory capacity?

Description

A

Maximum volume of air that can be inspired at the end of a normal quiet expiration
Tidal volume plus inspiratory reserve volume

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16
Q

What is the expiratory reserve volume?

Description

A

Extra volume of air that can be actively expired by maximal contraction beyond normal volume of air after a resting tidal volume

17
Q

What is the residual volume?

Description

A

Minimum volume of air remaining in the lungs even after a maximal expiration

18
Q

What is the functional residual capacity?

Description

A

The volume of air in the lungs at the end of normal passive expiration (not maximum)
Residual volume plus expiratory reserve volume

19
Q

What is the vital capacity?

Description

A

The maximum volume of air that can be moved out of lungs during a single breath following maximal inspiration.
Tidal volume plus Inspiratory reserve volume plus expiratory reserve volume

20
Q

What is the total lung capacity?

Description

A

The maximum volume of air that the lungs can hold
Vital capacity plus residual volume
(TV + IRV + ERV + RV)

21
Q

What is the vital capacity plus the residual volume?

A

The total lung capacity

22
Q

What is the total lung capacity minus the residual volume?

A

The vital capacity

23
Q

What is FEV1?

description

A

Volume of air that can be expired during the first second of expiration in forced vital capacity determination.

24
Q

What is FVC?

A

Forced Vital Capacity

Maximum volume that can be forcibly expelled from the lungs following a maximal inspiration

25
Q

How do you determine the FEV1 %?

A

FEV1/FVC ratio

26
Q

What is the normal FEV1%?

A

> 75%

27
Q

What FEV1% would be seen in a patient with obstructive lung disease?

A

FEV1% (FEV1:FVC)

28
Q

What FEV1% would be seen in a patient with restrictive lung disease?

A

FEV1% (FEV1:FVC) >75%

NORMAL

Respiratory Physiology (2 decks)

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