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Lab 259 final > Lab 3 - pulmonary function tests > Flashcards

Lab 3 - pulmonary function tests Flashcards

1
Q 
spiro = ?
meter = ?
A

breath

to measure

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2
Q

name the four non-overlapping primary lung volumes

A

tidal volume
inspiratory reserve volume
expiratory reserve volume
residual volume

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3
Q

what is tidal volume (Vt)

A

the volume of air inhaled OR exhaled during a single breath during normal breathing

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4
Q

what is inspiratory reserve volume (IRV)

A

the volume of air that can be maximally inhaled at the end of a normal tidal inspiration

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5
Q

what are the normal IRV for young females and males

A

1900mL for young females

3000mL for young males

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6
Q

t/f IRV increases during exercise

A

false, it decreases

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7
Q

what is expiratory reserve volume (ERV)

A

the volume of air that can be maximally exhaled at the end of a normal tidal

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8
Q

what are the normal ERV for young females and males

A

700mL in young females

1100mL in young males

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9
Q

t/f ERV decreases with exercise

A

true

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10
Q

what is residual volume (RV)

A

the volume of gas remaining in the lungs after a forced (maximal) exhalation

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11
Q

t/f RV can easily be measured

A

false, will be estimated (1L)

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12
Q

what is a pulmonary capacity

A

sum of two or more primary lung volumes

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13
Q

name the 4 pulmonary capacities

A

inspiration capacity
functional residual capacity
vital capacity
total lung capacity

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14
Q

what is inspiratory capacity (IC)

A

the maximum volume that can be inhaled from the end of a normal resting exhalation (IC = Vt + IRV)

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15
Q

what is functional residual capacity (FRC)

A

the volume of gas remaining in the lungs at the end of a normal resting exhalation (FRC = ERV + RV)

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16
Q

what is vital capacity (VC)

A

the greatest volume of gas that can be exhaled by maximal effort after a maximal inhalation (VC = ERV + IRV + Vt)

17
Q

what is total lung capacity (TLC)

A

the volume of gas in the lungs at the time of maximal inhalation . it is the sum of VC and RV (TLC = IRV + Vt + ERV + RV)

18
Q

most significant volume in terms of assessing pulmonary health

A

Vital capacity (VC)

19
Q

t/f if the VC is reduced there is likely a presence of pulmonary disease

A

true, but need more diagnosis measurement

20
Q

what is the Fev1

A

forced expiratory volume in 1 second (L)

21
Q

What does the forced expiration test (FEv1 & FVC) reflect (2)

A

the flow resistance properties of the airways & mechanical properties of the large and medium-sized airways

22
Q

ratio that provides an effective way of differentiating between
normal, obstructive, restrictive and potentially mixed pulmonary conditions

A

Fev1/FVC

23
Q

under normal conditions, the FEv1/FVC ratio is __

A

0.70 or greater

24
Q

under normal conditions, the percent predicted values of Fev1 and FVC are ___

A

≥ 80%

25
Q

in conditions where the airways are obstructed, what happens to FEv1 and FVC

A

FVC is normal

Fev1 is reduced under 80%

26
Q

name 3 conditions where airways are obstructed

A

asthma
emphysema
chronic bronchitis

27
Q

in conditions where the lung volume is reduced, what happens to FEv1 and FVC

A

FVC is compromised

FEV1/FVC ratio may be normal or even greater

28
Q

name 3 conditions where lung volume is reduced

A

pulmonary fibrosis
scoliosis
tuberculosis

29
Q

what is MBC

A

maximal breathing capacity

30
Q

what is the maximal breathing capacity

A

maximum volume of air that can be exhaled over a specified period of time

31
Q

MBC test provides information on 4 things

A

airway resistance, lung elasticity, lung compliance, respiratory muscle mechanics

32
Q

MBC normal value of the ratio btw value and predicted value

A

≥ 0.80

33
Q

what does a value below 0.80 indicates for MBC

A

presence of disease or poor effort

Lab 259 final (3 decks)

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