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Pulmonary Function Tests (PFT)

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Overview Brief

Pulmonary function tests are performed to monitor the functionality of the lungs.

What is Pulmonary function tests?

Pulmonary function tests measure lung capacity, volume, the rate of flow and gas exchange. It is a very useful test and is carried out by doctors to treat lung disorders. Pulmonary function tests are carried out before any surgery to ensure proper functioning of the lungs. (1)

How is Pulmonary function test performed?

Pulmonary function test is an outpatient test which means that the patient can go home on the same day.

  • The patient has to empty the bladder before the test and requested to sit on a chair.
  • A soft clip will be put on the nose of the patient to ensure that the breathing is done through the mouth.
  • A sterile mouthpiece is given to the patient which is attached to a spirometer.
  • The patient is requested to form a tight seal over the mouthpiece and is instructed to inhale and exhale in different ways.

The results of Pulmonary Function Test are analyzed by the Doctor. (2)

Side effects of Pulmonary function tests

Pulmonary function test is considered as one of the safest and quickest tests.

  • Coughing during the test.
  • Feeling short of breath.
  • Dizziness during the test. (3)

Preparations before performing Pulmonary function test

Pulmonary function test requires some prior preparation.

  • Any medicines related to respiratory issues should be avoided on the day of the test.
  • Have a light meal as the tight stomach can prevent the lungs from inhaling fully.
  • Smoking should be avoided before the test.

Post care after Pulmonary function test

Pulmonary function test

  • The patient should be allowed to take rest in case if he or she is feeling tired.
  • If the patient is having any respiratory problem then special care should be taken after the test.

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