Spirometry Testing A

Question 1

What is the definition of a slow vital capacity?

Answer 1

Maximum inspiration, then a maximum exhalation.

Question 2

SVC is useful when ___ is reduced and ___ is present.

Answer 2

FVC is reduced

Airway obstruction is present

Question 3

Slow exhalation results in a lesser degree of airway ___, and the patient may produce a larger ____.

Answer 3

narrowing

vital capacity

Question 4

If the SVC is within normal range, it is unnecessary to measure ___.

Answer 4

Static lung volumes.

If FVC is normal, it’s also unnecessary to measure static lung volumes.

Question 5

What does ATPS stand for?

What does BTPS stand for?

Answer 5

Ambient Temperature and Pressure Saturated

Body Temperature and Pressure Saturated

Question 6

BTPS is based on three things:
___ pressure,
___ pressure, and
___ level.

Answer 6

Ambient pressure
Barometric pressure
Humidity level

Question 7

How do you do a Vital Capacity?

Answer 7

Maximum inspiration, then maximum expiration

Question 8

What is a typical value of a vital capacity?

Answer 8

4800 ml

Question 9

What is the best value to diagnose a restrictive disease?

Answer 9

Vital Capacity. (If vital capacity is decreased, suspect restrictive disease.)

Question 10

What is the definition of IRV?

Answer 10

An inspiratory reserve volume is the largest volume of gas that can be inspired above normal tidal volume. (Doesn’t include tidal volume.)

Question 11

What is a typical IRV value?

Answer 11

3100 ml

Question 12

What is a typical ERV value?

Answer 12

1200 ml

Question 13

What is the definition of inspiratory capacity?

Answer 13

The largest volume that can be inspired from resting end-expiration

Question 14

What is a typical inspiratory capacity?

Answer 14

3600 ml

Question 15

How do you do a forced vital capacity?

Answer 15

Maximum inspiration followed by a forced and rapid maximum expiration

Question 16

The FVC may be substituted for the ___ to identify (obstructive / restrictive) lung disease.

Answer 16

SVC

Restrictive

Question 17

If FVC and SVC are given, you should compare them. If they’re the same, that means you should suspect ___.
If SVC is greater, then that means you should suspect ___.
If FVC is greater, then that means that you should suspect ___.

Answer 17

That the lungs are normal.
If SVC is greater, suspect obstructive lung disease. (Patients with obstructive lung disease can exhale more air slowly than rapidly.)
If FVC is greater, suspect that patient effort during the SVC was poor.

Question 18

How do you do an FVC?

1. Inspire as deeply as possible
2. Do a ___.
3. Exhale as forcefully as possible
4. Continue exhaling as hard as possible until ___ is achieved or ___ seconds has elapsed.

Answer 18

1. Inspire as deeply as possible.
2. Inspiratory plateau (breath hold)
3. Exhale as forcefully as possible
4. Continue exhaling as hard as possible until expiratory plateau is achieved or 15 sec has elapsed.

Question 19

If the patient passes out during the FVC Maneuver, this may indicate ___.

Answer 19

Decreased venous return (vaso-vagal response)

Question 20

Increase in FVC of >10% after bronchodilator can be suggestive of a positive post-bronchodilator response or ___.

Answer 20

Peripheral air trapping or a positive post-bronchodilator response.

Question 21

How do you calculate FVC from a graph?

Answer 21

Maximum expiration minus maximum inspiration

Question 22

On an FVC, before exhalation starts, you should record ___ to ___ seconds.

Answer 22

0.25-1 sec

Question 23

The FEV1 reflects the first second of a forced exhalation that follows a full inspiration, expressed in (liters or milliliters?).

Answer 23

Expressed in liters

Question 24

What is the value of a typical total lung capacity?

Answer 24

6000 ml

Question 25

What is a typical (RV/TLC)x100?

Answer 25

20%

Question 26

When describing lung volumes, do we use ATPS or BTPS?

Answer 26

BTPS