WEBVTT 00:00.740 --> 00:03.220 pulmonary function tests , sometimes 00:03.220 --> 00:05.387 called lung function tests measure how 00:05.387 --> 00:07.498 well the lungs work for patients with 00:07.498 --> 00:09.609 asthma . Pulmonary function tests are 00:09.609 --> 00:11.720 an important part of monitoring their 00:11.720 --> 00:13.942 disease and how well their treatment is 00:13.942 --> 00:15.998 working . Dr green . Can you tell us 00:15.998 --> 00:17.831 about pulmonary function tests ? 00:17.831 --> 00:20.053 Absolutely . Dr Reynolds some pulmonary 00:20.053 --> 00:22.164 function tests , such as spire . Um A 00:22.164 --> 00:24.470 tree and lung volume tests measure lung 00:24.470 --> 00:27.480 size and airflow spire . Um A tree uses 00:27.480 --> 00:29.870 a tube called a spire ammeter connected 00:29.870 --> 00:32.120 to a computer to measure the rate of 00:32.120 --> 00:34.030 airflow during regular and heavy 00:34.030 --> 00:36.290 breathing . It can also estimate long 00:36.290 --> 00:39.490 size lung volume tests are similar to 00:39.490 --> 00:41.657 spy rama tree , except that instead of 00:41.657 --> 00:43.768 breathing into a spiral monitor , the 00:43.768 --> 00:45.934 patient is placed in a small room with 00:45.934 --> 00:48.157 clear walls . Lung volume tests are the 00:48.157 --> 00:50.268 most accurate way to measure how much 00:50.268 --> 00:53.460 air a person's lungs can hold spire . 00:53.460 --> 00:55.560 Um A tree and lung volume tests may 00:55.560 --> 00:57.810 make some people lightheaded or tired 00:57.820 --> 00:59.876 from the required breathing effort . 01:00.140 --> 01:02.840 Other tests measure how well oxygen and 01:02.840 --> 01:05.470 carbon dioxide get in and out of the 01:05.470 --> 01:08.200 blood . These tests include lung 01:08.200 --> 01:10.990 diffusion capacity , pulse ox symmetry 01:11.000 --> 01:14.570 and arterial blood gas tests . Lung 01:14.570 --> 01:17.130 diffusion capacity assesses how well 01:17.140 --> 01:19.362 oxygen gets into the blood from the air 01:19.362 --> 01:21.460 you breathe . This test involves 01:21.460 --> 01:23.760 breathing in and out through a tube for 01:23.760 --> 01:25.649 several minutes without having to 01:25.649 --> 01:28.440 breathe intensely . Blood may also be 01:28.440 --> 01:30.660 drawn to measure hemoglobin levels . 01:31.240 --> 01:33.640 Pulse ox symmetry uses a probe that is 01:33.640 --> 01:35.740 placed on the finger or another skin 01:35.740 --> 01:37.940 surface , such as the ear to measure 01:37.940 --> 01:41.060 oxygen levels in the blood arterial 01:41.060 --> 01:43.640 blood gas tests directly measure the 01:43.640 --> 01:46.600 levels of oxygen and carbon dioxide in 01:46.600 --> 01:49.000 the blood . This test is usually 01:49.000 --> 01:51.222 performed in a hospital , but it may be 01:51.222 --> 01:53.580 done in a primary care clinic . Blood 01:53.580 --> 01:55.636 is drawn from an artery , usually in 01:55.636 --> 01:57.858 the wrist , where the pulse is measured 01:57.858 --> 02:00.120 and analyzed for oxygen and carbon 02:00.120 --> 02:03.110 dioxide levels . Another type of 02:03.110 --> 02:05.000 pulmonary function test , called 02:05.030 --> 02:07.660 fractional exhaled nitric oxide , 02:07.920 --> 02:10.040 measures nitric oxide , which is a 02:10.040 --> 02:12.760 marker for inflammation in the lungs . 02:13.140 --> 02:15.140 This test involves breathing into a 02:15.140 --> 02:17.270 tube connected to a portable device . 02:17.740 --> 02:19.960 It requires steady but not intense 02:19.960 --> 02:22.250 breathing . Other tests may be 02:22.250 --> 02:24.770 necessary for infants , Children and 02:24.770 --> 02:26.714 other patients who are not able to 02:26.714 --> 02:28.770 perform by rama tree and lung volume 02:28.770 --> 02:30.770 tests . Your provider will help you 02:30.770 --> 02:32.714 determine which pulmonary function 02:32.714 --> 02:34.659 tests are best for monitoring your 02:34.659 --> 02:37.150 asthma and treatment plan , mm hmm .