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

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spirometry related testing equipment

Spirometry & Related Testing Equipment

RET 2414L

Pulmonary Function Testing

Module 2.0

spirometry related testing equipment1
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
spirometry related testing equipment2
Spirometry & Related Testing Equipment
  • Spirometer
    • Definition
      • Any Device used to measure lung volumes and flows
volume displacement spriometers
Volume Displacement Spriometers
  • Water-Seal Spirometers

(Collins, Stead-Wells)

volume displacement spriometers1
Volume Displacement Spriometers
  • Water-Seal Spirometers
    • Bell factor
    • Kymograph
      • 32,160,1920 mm/min
    • ATPS to BTPS
    • Potentiometer
      • Flow/Volume
      • FV Loop
spirometers
Spirometers
  • ATPS to BTPS Coversion
    • Actual values must be corrected to body temperature pressure saturated (BTPS)
volume displacement spriometers2
Volume Displacement Spriometers
  • Water-Seal Spirometers
    • Problems
      • Cracks → Leaks
      • Positioning
        • Too high
        • Too low
    • Infection Control
      • Hoses
      • Mouth Pieces
      • Filters
volume displacement spriometers3
Volume Displacement Spriometers
  • Dry Rolling-Seal Spirometers
volume displacement spriometers4
Volume Displacement Spriometers
  • Bellows – Type Spirometer
flow sensing devices
Flow-Sensing Devices
  • Flow-Sensing Spirometers (pneumotachometers)
    • Devices that measure gas flow
flow sensing devices1
Flow-Sensing Devices
  • Turbine (impeller)
flow sensing devices2
Flow-Sensing Devices
  • Turbine (impeller)
    • Wright Spirometer
      • VC, VT, VE
      • Flows 3-300L/min
      • Not used for FVC
      • Compact
      • Gas sterilized
flow sensing devices3
Flow-Sensing Devices
  • Pressure Differential Flow Sensors
flow sensing devices4
Flow-Sensing Devices
  • Pressure Differential

Flow Sensors

    • Fleich (capillary tubes)
    • Silverman (screens)
    • Heating element to reduce condensation
    • Recalibrate after cleaning
flow sensing devices5
Flow-Sensing Devices
  • Heated-Wire Flow Sensors
spirometry related testing equipment3
Spirometry & Related Testing Equipment
  • Portable Spirometers
    • Flow-sensing spirometer interface with a laptop computer
spirometry related testing equipment4
Spirometry & Related Testing Equipment
  • Portable Spirometers
    • Portable spirometer using plug in cards
spirometry related testing equipment5
Spirometry & Related Testing Equipment
  • Portable Spirometers
    • Handheld “office” spirometers
spirometer calibration
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

spirometry related testing equipment6
Spirometry & Related Testing Equipment
  • Peak Expiratory Flow Meters
spirometry related testing equipment7
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)
spirometry related testing equipment8
Spirometry & Related Testing Equipment
  • Respiratory Pressure Manometers
    • Measures MIP and MEP