Pulmonary Function Testing

Question 1

what are the indications for PFT?

Answer 1

• to identify and quantify changes in pulmonary function
• to evaluate the need and quantify therapeutic effectiveness
• to screen for pulmonary diseases
• to assess patients for risk of post-op pulmonary complications
• to determine pulmonary disability
• differentiate between restrictive and obstructive

Question 2

what are the contraindications for PFT?

Answer 2

hemoptysis
pneumothorax
MI
PE
Nausea
recent cataract surgery 
patients with dementia

Question 3

what must all measurements be set to?

Answer 3

BTPS

Question 4

how do you calibrate for volume?

Answer 4

3 L super syringe

+/- 3 % (2.91-3.09)

Question 5

what do you use to calibrate for flow?

Answer 5

rotameter (pneumotachometer)

+/- 5%

Question 6

what do soda lime crystal abosrob?

Answer 6

carbon

Question 7

what do drierite crystals absorb?

Answer 7

MOISTURE

Question 8

what values can be obtained at bedside?

Answer 8

VT
RR
VE
VC
NIF
PEFR

Question 9

what are used to obtain beside values?

Answer 9

wrights respirometer
pressure manometer
PF meter

Question 10

how do you measure a VC?

Answer 10

70( pts weight)

Question 11

what is normal PEFR?

Answer 11

400-600

Question 12

simple bedside spirometry will not measure?

Answer 12

RV
FRC
TLC

Question 13

what is the MVV test?

Answer 13

Maximum Voluntary Ventilation
-effort dependent patient cooperation test for which the patient is asked to breath as deeply as possible and as rapidly as possible for at least 12 seconds