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NYCC Systems Phys > Spirometry > Flashcards

Spirometry Flashcards

1
Q

what is tidal volume (TV)?

A

normal quiet breathing

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2
Q

what is inspiratory reserve volume (IRV)?

A

amount of air we can breathe in above tidal volume

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3
Q

what is expiratory reserve volume (ERV)?

A

amount of air we can breathe out after tidal volume

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4
Q

what is residual volume (RV)?

A

amount of air left in the lung after breathing out vital capacity

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5
Q

what is inspiratory capacity?

A

TV + IRV
amount of air we can breathe in from the start of tidal volume to the maximum possible inspiration

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6
Q

what is functional residual capacity?

A

ERV + RV
(air breathed out + remaining air in lungs)

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7
Q

what is vital capacity?

A

TV + IRV + ERV
amount of air breathed out from maximum possible inspiration to maximum voluntary expiration

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8
Q

what is total lung capacity?

A

TV + IRV + ERV + RV

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9
Q

what lung volume cannot be measured on spirometry?

A

residual volume (RV)

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10
Q

which lung capacities cannot be measured on spirometry?

A

total lung capacity
functional residual capacity
(need residual volume)

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11
Q

where does airway resistance occur?

A

medium sized bronchioles

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12
Q

increased airway resistance is due to ____

A

narrowed/constricted airway
(eg. PSNS, low lung vol, histamine, forced expiration, etc)

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13
Q

what pathology is associated with increased airway resistance?

A

asthma

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14
Q

what expiratory sound does asthma have?

A

wheeze

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15
Q

what are the 2 zones of the respiratory system?

A

conducting zone
respiratory zone

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16
Q

area of the respiratory passages that does not participate in gas exchange is known as ____

A

dead space

17
Q

where does gas exchange occur?

A

alveoli

18
Q

the area where gas exchange occurs is called the ____

A

respiratory zone

19
Q

the bronchi are part of the ____ zone

A

conducting

20
Q

what is the anatomical dead space?

A

150mL of air in the bronchi (conducting zone)

21
Q

what is the physiological dead space?

A

measured by ventilation/perfusion ratio

22
Q

what is ventilation?

A

air in lung

23
Q

what is perfusion?

A

air in the blood

24
Q

determine FRC in L using the following values:
ERV= 2.0
IRV= 6.0
TV= 0.5
RV= 1.0

A

FRC= ERV + RV
= 2 + 1
= 3.0 L

25
Q

determine residual volume using the following values:
dead space = 150mL
FRC = 3L
TV = 650mL
ERV = 1.5L
TLC = 8L
respiratory rate = 15 breaths/min

A

RV = FRC - ERV
= 3L - 1.5L
= 1.5L

NYCC Systems Phys (42 decks)

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