Compliance Consequences

• Reduced Compliance & Surgery:

  • Reduced lung compliance due to:
  • Reduced lung volumes (FRC & VT ) ->
  • Atelectasis
  • Reduced chest wall compliance due to:
  • Raised intra-abdominal pressure
  • Supine position (decrease in functional residual capacity)
  • Age of patient
  • Obesity
• Consequences of Reduced Lung Volume:

  • decrease in Functional residual capacity ->
  • decrease in Lung compliance ->
  • Airway closure ->
  • Atelectasis ->
  • increase in Work of breathing ->
  • increase in O2 consumption