Oregon used to be home of the worldâs tallest Sitka spruce, until a winter storm snapped the tree practically in half. But, as Pete Springer reports, the spruce will remain on the state's list of heritage trees. If youâve driven Highway 26 to the Oregon coast, youâve probably seen the sign that says, âWorldâs Tallest Sitka Spruceâ. The sign is still there, but a December storm snapped off the 200-foot tall tree. That led to debate over whether Oregonâs first heritage tree still deserved the status.
Purpose of Pulmonary Function Tests. In the diagnosis of COPD, pulmonary function tests are performed to assess lung function and determine the degree of damage to the lungs. Along with a patient's history and physical, lung imaging studies (chest X-ray, CT scan) and open lung biopsy, PFTs are critically important to evaluate respiratory health.
Lung Function Tests. Guide. Lung function tests (also called pulmonary function tests, or PFTs) check how well your lungs work. The tests determine how much air your lungs can hold, how quickly you can move air in and out of your lungs, and how well your lungs put oxygen into and remove carbon dioxide from your blood.pirometry. Spirometry is the first and most commonly done lung function test. It measures how much and how quickly you can move air out of your lungs. For this test, you breathe into a mouthpiece attached to a recording device (spirometer).