Pulmonary Rehabilitation - Weaknesses Addressed

Weaknesses Addressed

  • Ventilatory limitation
    • Increased dead space ventilation
    • Impaired gas exchange
    • Increased ventilatory demands due to peripheral muscle dysfunction
  • Gas exchange limitation
    • Compromised functional inspiratory muscle strength
    • Compromised inspiratory muscle endurance
  • Cardiac dysfunction
    • Increase in right ventricular afterload due to increased peripheral vascular resistance.
  • Skeletal muscle dysfunction
    • Average reduction in quadriceps strength decreased by 20-30% in moderate to severe COPD
    • Reduction in the proportion of type I muscle fibres and an increase in the proportion of type II fibres compared to age matched normal subjects
    • Reduction in capillary to fibre ratio and peak oxygen consumption
    • Reduction in oxidative enzyme capacity and increased blood lactate levels at lower work rates compared to normal subjects
    • Prolonged periods of under nutrition which results in a reduction in strength and endurance
  • Respiratory muscle dysfunction

Read more about this topic:  Pulmonary Rehabilitation

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