effects of excercise

• What does a spirometer measure?

  Breathing and respiration
• What is tidal volume?

  Volume of gas in one normal breath
• What is respiratory minute ventilation?

  Volume of gas inhaled per minute
• What is vital capacity?

  Volume of gas in one forced deep breath
• How does the spirometer measure changes in gas volume?

  The lid of the chamber moves up and down
• What is the purpose of soda lime in a spirometer?

  To absorb exhaled carbon dioxide
• Why does the subject wear a nose clip during spirometry?

  To ensure all breathing is through the mouth
• What is the graph produced by a spirometer called?

  Spirogram or spirometer trace
• What equipment is needed for spirometry?

  • Spirometer
  • Datalogger/computer/kymograph
  • Soda lime
  • Disinfectant
  • Nose clip
• How do you find the vertical scale of a spirometer?

  Empty chamber and force known air volume
• What is the horizontal scale set to during spirometry?

  1 mm per second
• What should be done before using the spirometer?

  Read manufacturer’s notes and ensure supervision
• What should the subject do before starting the spirometry test?

  Practice breathing into the tube
• What is the maximum duration for breathing into the spirometer?

  5 minutes
• What are the hazards and safety precautions in spirometry?

  Hazards:

  • Disinfectant: Flammable
  • Soda Lime: Corrosive
  • Spirometer: Breathing/circulatory problems

  
  

  Safety Precautions:

  • Keep disinfectant away from flames
  • Wear eye protection with soda lime
  • Use spirometer under supervision
• What happens to tidal volume after exercise?

  Tidal volume increases
• What remains the same after exercise regarding vital capacity?

  Vital capacity remains the same
• What happens to breathing rate after exercise?

  Breathing rate increases
• How is respiratory minute ventilation calculated?

  Breathing rate multiplied by tidal volume
• Why does respiration increase during exercise?

  Increased muscle contraction requires more oxygen
• What happens to minute ventilation after reaching maximum aerobic rate?

  Minute ventilation plateaus to a maximum
• What should be obtained before using the spirometer?

  Informed consent
• What should participants be allowed to do during the spirometry test?

  Refrain from participating or stop at any time