Respiratory Physiology I

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First Part ANZCA Tutorials Respiratory Physiology I Tutorial 1 of 3 Alfred Hospital Melbourne, Australia

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Presentation Transcript

Respiratory Physiology I: 

Anaesthesia First Part Tutorials Dr Rishi Mehra Alfred Anaesthesia r.mehra@alfred.org.au Available online: www.cindyandrishi/presentations Respiratory Physiology I

Structure of Tutorials: 

Structure of Tutorials

Structure of Tutorials: 

Structure of Tutorials

Structure of Tutorials: 

Structure of Tutorials

Be an examiner for a day…: 

Be an examiner for a day…

Review of gas laws: 

Review of gas laws

Review of gas laws: 

Review of gas laws

Review of gas laws: 

Review of gas laws

Review of gas laws: 

Review of gas laws

Review of gas laws: 

Review of gas laws

Structure of the Respiratory System: 

Structure of the Respiratory System

Functions of the lung: 

Functions of the lung

Functions of the lung: 

Functions of the lung

Surfactant: 

Surfactant

Functions of the lung: 

Functions of the lung

Functions of the lung: 

Functions of the lung

Relevant Respiratory Pressures: 

Relevant Respiratory Pressures

Pressure!: 

Intra-thoracic (Alveolar) Pressure: pressure inside the thoracic cavity, (essentially pressure inside the lungs) Transpulmonary pressure: The difference between the pressure of the respired gas at the mouth and the pleural pressure around the lung. Intra-pleural Pressure: pressure inside the pleural cavity, normally less than intra-thoracic pressure

Dead Space: 

Dead Space

Dead Space: 

Dead Space

Fowlers Method: 

Fowlers Method

Fowlers Method: 

Fowlers Method

Dead Space: 

Dead Space

Dead Space: 

Dead Space

Dead Space: 

Dead Space

Physiological Dead Space: 

Physiological Dead Space

Lung Compliance: 

Lung Compliance

Lung Compliance: 

Lung Compliance

Lung Compliance: 

Lung Compliance

Lung Compliance: 

Lung Compliance

Compliance: 

Compliance

Compliance: 

Compliance

Static Compliance: 

Static Compliance

Compliance: 

Compliance

Dynamic Compliance: 

Dynamic Compliance

Specific Compliance: 

Specific Compliance

Compliance: 

Compliance

Effect of gravity on ventilation: 

Effect of gravity on ventilation

Regional Ventilation: 

Regional Ventilation

Regional Ventilation: 

Regional Ventilation

Perfusion: 

Perfusion

Perfusion: 

Perfusion

Perfusion: 

Perfusion

Perfusion: 

Perfusion

Perfusion: 

Perfusion

Perfusion: 

Perfusion

Perfusion: 

Perfusion

Pulmonary Vascular Resistance: 

Pulmonary Vascular Resistance

Pulmonary Vascular Resistance : 

Pulmonary Vascular Resistance

Functional Residual Capacity: 

Functional Residual Capacity

Functional Residual Capacity: 

Functional Residual Capacity

Measuring FRC – Helium Dilution: 

Measuring FRC – Helium Dilution C 1 x V1 = C2 x (V1 + V2) Solve for V2 V2 = V1 (C1 – C2)/C2

Measuring FRC – Whole Body Plethysmography: 

Measuring FRC – Whole Body Plethysmography

Functional Residual Capacity: 

Functional Residual Capacity

Functional Residual Capacity : 

Functional Residual Capacity

Functions of the FRC: 

Functions of the FRC

Closing Capacity: 

Closing Capacity

Closing capacity: 

Closing capacity

Functional Residual Capacity: 

Functional Residual Capacity