Forced Expiration Technique - ACBT

• Forced Expiration Technique:

  • Forced Expiration Technique is combination of 1 - 2 forced expiratory manoeuvres (huffs) and breathing control
  • The huff produces dynamic compression of airways proximal to equal pressure point
  • point at which pressure inside airway is equal to intrapleural pressure
  • Repetition of this procedure facilitates movement of excess bronchial secretions towards mouth

  
• Huff:

  • A huff performed at low lung volume will facilitate clearance from the more distal airways
  • A huff performed at high lung volume will facilitate clearance from the more proximal airways