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CPR Exam 2 > DSA: Lung Volumes and Capacities > Flashcards

DSA: Lung Volumes and Capacities Flashcards

1
Q

What is the physiological unit of the lung?

A

Alveolar-capillary unit

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2
Q

Which of the following correctly explains Tidal Volume?

A. Volume of air that cannot be forced out no matter what

B. Additional volume that can be inhaled

C. The amount of air inspired or expired in a single breath

D. Maximum volume to which lungs can be expanded

A

The amount of air inspired or expired in a single breath

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3
Q

Which of the following correctly explains Residual Volume?

A. Volume of air that cannot be forced out no matter what

B. Additional volume that can be inhaled

C. The amount of air inspired or expired in a single breath

D. Maximum volume to which lungs can be expanded

A

Volume of air that cannot be forced out no matter what

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4
Q

Which of the following correctly explains Inspiratory Reserve Volume?

A. Volume of air that cannot be forced out no matter what

B. Additional volume that can be inhaled

C. The amount of air inspired or expired in a single breath

D. Maximum volume to which lungs can be expanded

E. Additional volume that can be exhaled

A

Additional volume that can be inhaled

  • note this is beyond the Tidal Volume
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5
Q

Which of the following correctly explains Expiratory Reserve Volume?

A. Volume of air that cannot be forced out no matter what

B. Additional volume that can be inhaled

C. The amount of air inspired or expired in a single breath

D. Maximum volume to which lungs can be expanded

E. Additional volume that can be exhaled

A

Additional volume that can be exhaled

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6
Q

Which of the following correctly explains Total Lung Capacity?

A. Volume of air that cannot be forced out no matter what

B. Additional volume that can be inhaled

C. The amount of air inspired or expired in a single breath

D. Maximum volume to which lungs can be expanded

E. Additional volume that can be exhaled

A

Maximum volume to which lungs can be expanded

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7
Q

Which of the following respiratory capacitiescan be described as the amount of air that remains in the lungs following normal expiration?

A. Functional Residual Capacity (FRC)

B. Vital Capacity

C. Inspiratory Capacity

D. Total Lung Capacity

A

Functional Residual Capacity (FRC)

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8
Q

Which of the following respiratory capacitiescan be described as the capacity of air that can be maximally inspired following a normal exhale?

A. Functional Residual Capacity (FRC)

B. Vital Capacity

C. Inspiratory Capacity

D. Total Lung Capacity

A

Inspiratory Capacity

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9
Q

Which of the following equations would help determine the Vital Capacity?

A. Vt+IRV

B. IRV + Vt + ERV

C. ERV + RV

D. IC + FRC

A

IRV + Vt + ERV

NOTE: also IC + ERV because IC is IRV+VT

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10
Q

Which of the following equations would help determine the Functional Residual Capacity?

A. Vt+IRV

B. IRV + Vt + ERV

C. ERV + RV

D. IC + FRC

A

ERV + RV

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11
Q

Which of the following equations would help determine the Inspiratory Capacity?

A. Vt+IRV

B. IRV + Vt + ERV

C. ERV + RV

D. IC + FRC

A

Vt+IRV

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12
Q

What is typically a normal Tidal Volume?

A

500 mL

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13
Q

What 3 volumes or capacities cannot be determined with spirometry?

A

Functional Residual Capacity

Residual Volume

Total Lung Capacity

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14
Q

Look at this and know it

A

Cool

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15
Q

What influences Lung Volumes?

A

Boy Size

Age

Posture

Sex

Ethnicity

Obesity

Pulmonary Disease

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16
Q

Obesity causes reduction of all static volumes except which of the following?

A. Expiratory Reserve Volume

B. Functional Reserve Capacity

C. Tidal Volume

D. None of the above

A

Tidal Volume

NOTE: the other two options are especially reduced with obesity

17
Q

T/F: When supine FRC is reduced?

A

True

18
Q

Explain how we measure residual volume?

A

We inhale air with a known concentration (C1), like helium and from a known volume (V1). Once equilibrium is reached we exhale and determine the change in concentration (C2) which allows us to determine V2. V2 is our Functional Residual Capacity

19
Q

T/F: Body plethysmography determines FRC via pressure changes

A

true

20
Q

Nitrogen Wash-out technique requires the individual to breath 100% O2 through a one way valve, that is then collected after expiration. This air is monitered until N2 reaches zero. Then the total volume of all gas expired is determined and multiplied by % of N2 in mixed expired air. What is this technique used to measure?

A

Functional Residual Capacity

CPR Exam 2 (18 decks)

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