Pulmonary Rehabilitation Flashcards
Why do patients with COPD have reduced exercise tolerance?
Reduced ventilatory threshold
- increased work of breathing due to flattening of diaphragm with hyperinflation
- increased TLC and RV means tidal breathing closer to dyspnoea threshold - quicker to become dyspnoiec
Gas Exchange Limitation
- due to destruction of alveolar tissue and increased dead space
Cardiac Limitation
- increased pulmonary vascular resistance as a result of hypoxic vasoconstriction, vascular remodelling and increased number of RBC
- causes right ventricular hypertrophy and failure
- leads to impaired left side filling and reduced cardiac output
Lower limb dysfunction
- deconditioning due to inactivity and disues
- systemic inflammation
- oxidative stress
- nutritional impairment
- aging
- corticosteroid use
Benefits of pulmonary rehab
- reduced symptoms
- reduction in anxiety and depression
- improved QOL
- improved CV fitness, peripheral muscle function and exercise capacity
- enhanced sense of self control over condition
- reduced hospitalisation for COPD exacerbation
- cost-effective
Goals of pulmonary rehab
increase exercise capacity reduced activity limitation, increase participation improve QOL improve mood and motivation improve treatment adherence build self management capacity reduce health care burden
Inclusion/Exclusion Criteria
INCLUSION
- patient with COPD/respiratory condition
- patient recovering from acute exacerbation
- patient is willing to participate
EXCLUSION
- patient with severe cognitive impairment
- exhibit severe psychotic disturbance
- infectious disease
Potentional Barriers
referral
patient willingness
transport
Medical History/Subjective history components
- respiratory diagnosis
- PMHx
- medication hx
- subjective respiratory history
- oxygen therapy
- exercise tolerance and limiting factors
- current and previous exercise participation
- BMI
- lung function via spirometry
- social/psychological concerns
Exercise Testing
- determines the level of functional impairment and activity limitation
- determines factors that limit exercise capacity
- provides information that will guide exercise prescription
- identify impairments of O2 saturation that may benefit from supplemental oxygen
- evaluate effectiveness of rehabilitation in altering exercise capacity and exertional dyspnoea
- risk assessment
Compare 6MWT and ISWT
6MWT
- self paced
- intra subject
- continuous/intermittent
- steady state
- 2 tests
- suitable for very disabled patients
- estimate of VO2 max
- primary outcome measure is distance
- exercise prescription = based on percentage of average speed walked
ISWT
- externally paced
- intra/inter subjct
- continuous
- incremental
- 2 tests
- unsuitable for very disabled patient
- estimates VO2 max
- primary outcome measure = distance
- exercise prescription = based on percentage of maximum speed achieved
Exercise Prescription
MUST INCLUDE - LL endurance training and HEP Can include - UL endurance - LL strength - UL strength - flexibility - balance - inspiratory muscle training
LL Endurance Prescription
ideally walking F - 2-3 supervised sessions a week, 1-2 HEP sessions a week I - 80% average speed 6MWT - 70% max speed ISWT Type - continuous or interval Time - 30 mins total session
UL Endurance Prescription
ideally arm cranking - if not any unsupported UL exercise
F - supervised x3 per week, 1-2 HEP
I - low weight and high reps, 1-3 sets, RPE 2-3
Type - continuous or interval
Time - aim is 10 mins
Strength Prescription
F - supervised 2-3 sessions per week
I - 10 RM
Type - continuous/interval/circuit
Time - reps, 3 sets of 8-12
Patient Education Aims
- promote behaviour change
- enhance physical fitness and increase physical activity
- improve QOL
- reduce length of stay in hospital
- reduce hospital admissions
- optimise nutritional status
- improve mental health
Patient Education Topics
- role and correct use of medications
- managing breathlessness
- physical exercise
- information on disease
- nutrition and healthy eating
- coping with chronic lung disease and mental health
- sputum clearance
- energy conservation techniques
- continence
- sexual issues
- importance of vaccination
- community resources
- home oxygen
- action plan
Prescription from exercise testing
6MWT - 70-80% average pace
Cycling 60-80%
IMWT - 60-80%