Treating Lung Collapse Flashcards
What is the physiological rationale for positioning for lung collapse?
Improving
- Regional volume (i.e. uppermost lobe will stretch open the most due to gravity pulling down)
- Lung volumes (e.g. FRC)
- V/Q matching
What does positioning to increase regional lung volume involve?
- Imposes stretching force on alveoli
- Placing the collapsed segment of the lung uppermost
- Causes passive increase in lung volume
What does positioning to increase lung volume involve?
- Increasing FRC by standing patient (or as close as possible)
- Keeping FRC above closing capacity at all times (to prevent collapse)
What is the best way to increase a patient’s FRC?
Stand them up
What does positioning to improve V/Q matching involve?
- Placing the collapsed segment of the lung uppermost
- Results in the V/Q occurring in the good lung due to gravity
- Improves the patient’s O2 sats
What are the precautions for positioning?
- Pain
- Anxiety
- Limitations due to recent surgery e.g. hip, vascular
- Pneumonectomy (upright only)
- Attachments, esp ICC
- Orthopaedic injuries, e.g. pelvic/spinal fractures
- Intracranial injury (raised IC pressure)
- Recent angiography (avoid hip flexion)
- Critically ill/unstable patients
- Head down position
What are the practical considerations of positioning?
- Can’t stay in one position all day
- Educate patients, carers, nursing staff
- Manual handling ‘no lift’ policy
- Safety of staff & patient
- Equipment
- Prepare the environment
What are the physio techniques for improving lung volume?
- Positioning
- Mobilisation
- PEP
- Deep breathing & thoracic expansion exercises
What does mobilisation include?
- Tilt table
- SOOB
- Standing
- Marching on spot
- Walking
What is the aim of mobilisation?
Stimulate increase in ventilation (TV x RR)
What are the other benefits of mobilisation?
- Cardiovascular
- Musculoskeletal
- Functional treatment, important ADL
- Independence
- Psychological
- One requirement for discharge from hospital
What has evidence found in regards to mobilisation and PPCs?
Patients 3 times more likely to develop PPCs for each day they do not mobilise away from bed
What are the precautions for mobilisation?
- Respiratory: PaO2/FiO2 ratio <300
- Attachments
- CV status
- WB status
- Nausea & vomiting
- Patient cooperation
- Environmental risks (prepare space, chair, slippers)
- Prepare for emergency situation
What are the practical considerations for mobilisation?
- Know/assess patient’s pre op level of mobility
- Dose & intensity (need to increase TV & RR)
- Prepare self, patient, environment
- Walking frames are useful in early post op period, esp for attachments
- Always have assistance, esp at the start
- Includes transfers from bed/chair
- Stairs prior to discharge
What is the physiological rationale of using PEP for lung collapse?
Same as sputum clearance
- Uses positive pressure of blowing to create back pressure in airways
- Uses collateral ventilation to re-open collapsed airways