What is a pulmonary function test?

PFT's. are tests that look at your lung function. They are used to tell if you have obstructive disease by looking at how much air you can blow out; they can tell if you have a restrictive disease by looking at your lung volumes; and they can tell how well you are able to exchange oxygen between your alveoli (air sacs) and capillaries by doing a diffusion test.
Pulmonary function. Pulmonary function testing generally requires a person to sit in a booth and breathe through a mouthpiece. A machine analyzes the flow and volume of air moving trough the lungs. The procedure is benign and not painful.

Related Questions

What is a pulmonary function test and what is the procedure for it?

Checks lung function. Pfts check numerous areas of lung capacity, flow rates, etc. And are useful in treating/diagnosing emphysema, copd, restrictive ariway diseases, asthma, and understanding lung capabilites prior to surgery. This would be common in smokers, elderly, or in patients with lung diseases like cystic fibrosis. Pfts are easy and done in a lab or pulmonary specialist's facility.

What exactly is a pulmonary function test?

PFT... Pulmonary function tests are tests that measure your respiratory functioning. They will show if you have obstructive or restrictive lung disease as well as give information about the size of your lungs and how gases (oxygen, carbon dioxide) are exchanged. It will also show if the disease present is reversible with medicines, like bronchodilators. They are administered by a respiratory therapist.
PFT's. are tests that look at your lung function. They are used to tell if you have obstructive disease by looking at how much air you can blow out; they can tell if you have a restrictive disease by looking at your lung volumes; and they can tell how well you are able to exchange oxygen between your alveoli (air sacs) and capillaries by doing a diffusion test.

What happens during a pulmonary function test?

Breathing test. The pulmonary function test measures how well air moves in and out of the lungs and what you lung capacity is. Basically you blow into a machine. You may be asked to use an inhaler and the test may be repeated to see if there is any change in the measurements. The pulmonary function test is an important part of an asthma or COPD evaluation and is used to follow your progress to treatment.
Breathing test. Pulmonary function test (pfts) are non-invasive breathing studies done with a computer. You breathe into it according to the direction of the technician and it measures the volume of air and forces during breathing. Often then you breath in a medicine that relieves airway spasm (bronchodilator) to measure any changes resulting. Another part of the test measures gas exchange at the alveolar level.

What is invovled in a pulmonary function test?

Test for asthma. It involves blowing into a tube which is connected to a computer. It measures a number of variables of airflow. Often, after getting a baseline, we give the patient an asthma medication called "albuterol, " and repeat the test. The results are used to diagnose asthma and emphysema, among other diseases.
Hard breathing. You will be asked to take deep breaths, forcefully exhale, and to hold your breath at times.

What is involved in typical pulmonary function test?

Pulmonary function. Pulmonary function testing generally requires a person to sit in a booth and breathe through a mouthpiece. A machine analyzes the flow and volume of air moving trough the lungs. The procedure is benign and not painful.

What can trigger an inaccurate pulmonary function test?

PFT. This test can be highly variable. The quality of the test can depend on several things. The patient performing the test has to really give it a good effort. Many times this is also dependent on the person administering the test, who must be a good instructor. Also the equipment must be calibrated, and functioning well, no air leaks and also the type of equipment may allow for some variability.
Commonly poor effort. Pulmonary tests are dependent on the effort of the patient. Without a deep breath and a forceful, sustained blow, the test results are inaccurate. Also use of bronchodilators prior to the test will falsely improve those with obstruction. PFT's require an experienced examiner and a graphic depiction with which to gauge the accuracy of the effort.

What pulmonary function test used for copd?

Spirometry. This is the standard test to determine pulmonary obstructions. If you think this is your case, don;t hesitate being tested and if you smoke- stop now!
Spirometry. Usually the forced vital capacity (fvc) and a ratio of fev-1 /fvc (fev-1 = forced expiratory volume in one second) is obtained. If the fev-1/fvc ratio is low, a repeat study will be done after a bronchodilator treatment to see if the airway obstruction can be reversed. A short course of Prednisone may also prescribed to establish reversibility. At times a short course of Prednisone is needed.