Lung function tests

Lung Function Tests

Lung function tests, also known as pulmonary function tests (PFTs), are a group of tests that measure how well the lungs work. This includes how well you're able to breathe and how effective your lungs are able to bring oxygen to the rest of your body.

Pronunciation

• Lung: /lʌŋ/
• Function: /ˈfʌŋkʃən/
• Tests: /tɛsts/

Etymology

The term "lung" comes from the Old English word "lungen" which means "the light organ." The term "function" comes from the Latin word "functio" which means "performance, execution." The term "test" comes from the Old French word "test" which means "small vessel."

Types of Lung Function Tests

There are several types of lung function tests, which include:

• Spirometry: This is the most common lung function test. It measures how much air you can breathe in and out of your lungs, as well as how easily and quickly you can blow the air out of your lungs.
• Body plethysmography: This test measures how much air is present in your lungs when you take a deep breath. It also measures the amount of air remaining in your lungs after you exhale as fully as possible.
• Diffusion capacity: This test measures how well the lungs exchange oxygen and carbon dioxide with the blood.
• Arterial blood gas test: This test measures the oxygen and carbon dioxide levels in your blood.

Related Terms

• Asthma
• COPD
• Pulmonary fibrosis
• Cystic fibrosis
• Pulmonary hypertension

See Also

• Respiratory system
• Respiratory therapy

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