Pulmonary function test.

PFT are valuable investigation in the management of patients with

suspected or previously diagnosis respiratory disease

&

To help monitor response to further treatment

Including Patient historyo How far can patient walk etc

Physical examination

Chest x-ray examination

Arterial blood gas analysis

Other pulmonary test

• Spirometer

• Lung volume

• Peak flow

Indication

• Chronic dyspnea

• Asthma

• COPD

• Restrictive ling disease

• Impairment or disability

Other examination

Oxygen partial pressure low (hypoxia)

• Central cyanosis

• Confusion

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.

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)

Breath holding test

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

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.

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)

Expiratory time

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

Peak flow meterA 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

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

Thank you!