Pulmonary function tests (PFTs) are useful for evaluating and monitoring patients with respiratory diseases. PFTs include assessments of patient history, physical examination, chest x-rays, arterial blood gases, spirometry, lung volumes, and peak flow. Specific PFTs indicate conditions like asthma, COPD, and restrictive lung diseases. Bedside lung function tests can help identify obstructive airway disease and include match blowing, breath holding, single breath counting, and chest expansion assessments. Spirometry precisely measures lung function values to diagnose conditions affecting the lungs.

1. Pulmonary function test.

2. PFT are valuable investigation in the
management of patients with
suspected or previously diagnosis
respiratory disease
&
To help monitor response to further
treatment

3. Including
 Patient history
o How far can patient walk etc
 Physical examination
 Chest x-ray examination
 Arterial blood gas analysis
 Other pulmonary test
• Spirometer
• Lung volume
• Peak flow

4. Indication
• Chronic dyspnea
• Asthma
• COPD
• Restrictive ling disease
• Impairment or disability

5. Other examination
Oxygen partial pressure low (hypoxia)
• Central cyanosis
• Confusion

6. Co2 partial pressure high (hypercapnia)
peripheral signs
• warm periphery
• Dilated veins
• Bounding pulse
• Flapping tremor
Central signs
• Drowsy
• Papilledema
• Small pupils
Check by arterial blood gases.

7. Bedside lung functional test
(help to identify obstructive air way disease)
Match blowing test
Blowing out lighted match about 15cm from the mouth and with the
mouth wide open is easy as long as peak flow.
(flow is approximately 80 L/ min)

8. Breath holding test
Measure the length of time a person can hold
breath. Its normally less than 20 seconds.

9. Single breath count test.
Like breath counting test see how long patient
can hold breath, in this test ask to hold breath
and count as he or she can maximum.

10. Chest expansion test
Locate 4th intercostal space , place tape there and get
normal reading around the chest. Then ask to patient
breath as possible and take measurement.
(should be more than 5cm)

11. Expiratory time
Timing the period of full expiration through wide open
mouth following a deep breath.(should be less than 2
second)

12. Peak flow meter
A measure of air way obstruction is the peak rate of flow
of air out of the lung.
Record is make using peak flow meter.
Normally 300-600 L/min

13. spirometer
Including test for pulmonary mechanics .
Measurement FVC, FEV1,FEF value, FIFRs.
Can identify air way obstruction.
Device are help to make pneumotachograph
that can be help to assess disease such as,
asthma, pulmonary fibrosis, cystic fibrosis,COPD

15. Thank you!