Week 7.1 Secretion Clearance Flashcards
What is cough?
Normal clearance mechanism to help clear secretions away from main airways (clears secretion from large airways)
What are the components of a cough: (Effective cough requires?)
- ability to increase lung volume
- ability to close the glottis (Compressive phase)
- sufficient respiratory and abdominal strength
- ability to maintain airway calibre during cough
Why would a huff be used instead of a cough?
- to prevent dynamic airway collapsing
- limited by pain, exhaustion
Huffing from high lung volumes clear secretions in which area?
Proximal airways (Central and larger)
Huffing from high lung volumes clear secretions in which area?
Distal airways
What is FET (Forced expiratory technique) ?
- a huff combined with relaxed diaphragmatic breathing
- Involvement of breathing control -> 1-2 huffs -> Breathing control (Can be modified)
What does breathing control minimise?
- minimises airway compression/collapse
- minimise airflow obstruction
- minimise fatigue
What is ACBT (Active cycle breathing technique) ?
- involvement of Breathing Control, Thoracic Expansion Exercise, and Huff/cough
The addition of TEE in ACBT helps prevent and maintain?
- helps maintain alveolar volume
- prevents collapse of airways and alveoli
What is Percussion?
- Application of mechanical force to the chest wall with a cupped hand
- helps move phlegm to larger airways - so you can cough it easier
Is Percussion effective in little to no secretions? True or false
False
What is Vibrations?
- application of oscillatory and compressive force (also related to mechanical energy)
- helps shear of (lessen stickiness) of mucus in the airways
What are the Contraindications and Precautions of percussion and vibration?
- fractured ribs
- franks haemoptysis (Coughing blood)
- Rib Ca
- Bronchospasm (?)
- haemodynamic instability
- severe osteoporosis
- low platelet levels
- raised ICP
Percussion should not be used in patients with high or low secretions?
- Should not be used in patients with low or scant secretions
What is postural drainage?
- The use of gravity to assist the clearance and secretions from lung segments