1. Spirometry & Related Testing Equipment RET 2414L Pulmonary Function Testing Module 2.0

2. Spirometry & Related Testing Equipment  Learning Objectives Describe at least one volume displacement spirometer List at least two principles used by flow- sensing spirometers to measure volume

3. Spirometry & Related Testing Equipment  Spirometer Definition  Any Device used to measure lung volumes and flows

4. Volume Displacement Spriometers  Water-Seal Spirometers (Collins, Stead-Wells)

5. Volume Displacement Spriometers  Water-Seal Spirometers Bell factor Kymograph  32,160,1920 mm/min ATPS to BTPS Potentiometer  Flow/Volume  FV Loop

6. Spirometers  ATPS to BTPS Coversion Actual values must be corrected to body temperature pressure saturated (BTPS)

7. Volume Displacement Spriometers  Water-Seal Spirometers Problems  Cracks → Leaks  Positioning Too high Too low Infection Control  Hoses  Mouth Pieces  Filters

8. Volume Displacement Spriometers  Dry Rolling-Seal Spirometers

9. Volume Displacement Spriometers  Bellows – Type Spirometer

10. Flow-Sensing Devices  Flow-Sensing Spirometers (pneumotachometers) Devices that measure gas flow

11. Flow-Sensing Devices  Turbine (impeller)

12. Flow-Sensing Devices  Turbine (impeller) Wright Spirometer  VC, V T, V E  Flows 3-300L/min  Not used for FVC  Compact  Gas sterilized

13. Flow-Sensing Devices  Pressure Differential Flow Sensors

14. Flow-Sensing Devices  Pressure Differential Flow Sensors Fleich (capillary tubes) Silverman (screens) Heating element to reduce condensation Recalibrate after cleaning

15. Flow-Sensing Devices  Heated-Wire Flow Sensors

16. Spirometry & Related Testing Equipment  Portable Spirometers Flow-sensing spirometer interface with a laptop computer

17. Spirometry & Related Testing Equipment  Portable Spirometers Portable spirometer using plug in cards

18. Spirometry & Related Testing Equipment  Portable Spirometers Handheld “office” spirometers

19. Spirometer Calibration  3 – Liter Syringe Used for volume calibration of volume-based and flow-based spirometers ATS Standards  +/- 3%  Or +/- 0.05 L Whichever is greater

20. Spirometry & Related Testing Equipment  Peak Expiratory Flow Meters

21. Spirometry & Related Testing Equipment  Peak Expiratory Flow Meters Recommended Ranges  ATS 60-400 L/min (children) 100-850 L/min (adults)  NAEPP 100-400 L/min (children) 100 – 700 L/min (adults)

22. Spirometry & Related Testing Equipment  Respiratory Pressure Manometers Measures MIP and MEP

23. Spirometry & Related Testing Equipment  MIP

24. Spirometry & Related Testing Equipment  MIP

25. Spirometry & Related Testing Equipment  MIP

26. Spirometry & Related Testing Equipment  MIP