The effects of lung disease

• Tidal volume

  Volume of air in each breath
• Ventilation rate

  Breaths per minute
• Forced expiretry volume (FEV1)

  Maximum air breathed out in one second
• Forced vital capacity (FVC)

  Maximum volume of air breathed out after a deep breath in
• Tuberculosis

  Infected tissue dies - Tidal volume decreases
• Fibrosis

  Scar tissue in the lungs - Tidal volume decreases, FVC decreased
• Asthma

  Muscle lining in bronchioles contract, mucus produced - FEV1 deccreases
• Emphysema

  Inflammation which attracts phagocytes, enzymes break down elastin - FVC decreases