Untitled Flashcard Set

Total Lung Capacity (TLC)

The total volume of gas in the lungs after maximal inhalation.

total lung capacity

• residual volume (RV) + vital capacity (VC)

Tidal Volume (TV)

The volume of gas inspired or expired with each breath in an unforced respiratory cycle.

Inspiratory Reserve Volume (IRV)

Maximum volume of gas that can be inspired during forced breath, beyond a normal inspiration.

Expiratory Reserve Volume (ERV)

Maximum volume of gas that can be exhaled during forced breath.

Residual Volume (RV)

The volume of gas remaining in the lungs after maximal exhalation.

Vital Capacity (VC)

The maximum amount of gas that can be exhaled after maximum inhalation.

vital capacity

• Maximum inhalation - Maximum exhalation

Inspiratory Capacity (IC)

Maximum amount of gas that can be inhaled after a normal tidal expiration.

Inspiratory Capacity (IC)

• Tidal Volume (TV) + Inspiratory Reserve Volume (IRV)

Functional Residual Capacity

Amount of gas remaining in the lungs after normal tidal expiration.

Forced Vital Capacity (FVC)

The amount of air exhaled forcefully after maximum inhalation.

Forced Expiration Volume - One-Second (FEV1)

Measures the volume of air exhaled in the first second of forced expiration following a maximum inhalation.

Forced Expiration Volume - One-Second (FEV1)

maximum inhalation (plateau) - lung capacity at 1 second

Percent Forced Expiration Volume - One-Second (%FEV1)

Measures the volume of air exhaled in the first second of forced expiration following a maximum inhalation.

Percent Forced Expiration Volume - One-Second (%FEV1)

FEV1/FVC x100%

pulmonary fibrosis

build up of scar tissue

emphysema

fewer but larger alveoli, reduced surface are for gas exchange

pneumonia

infection of the lungs

restrictive disorder

damage to the lung tissue, low VC but normal FEV1

obstructive

narrowing of the airways, normal VC but reduced FEV1

asthma

narrowing of airways due to bronchoconstriction and excess mucus

chronic bronchitis

chronic inflammation of the bronchi, leading to excessive mucus production and narrowing of airways.

COPD chronic obstructive pulmonary disease

collection of symptoms that includes chronic airway inflammation, alveolar destruction, emphysema