Arterial Blood Gas Analysis

6/30/2004

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Table of Contents

Arterial Blood Gas Analysis

Mechanisms of Hypoxemia

Case #1 - Hypoventilation

Alveolar-arterial PO2 Difference

Hypoventilation: Normal A-a PO2 Difference

Interpretation of A-a PO2 Difference(room air breathing)

Etiology of Hypoventilation

Case #2 - V/Q Mismatch

Pathology of Status Asthmaticus

Effect of Oxygen Therapy on Low V/Q

Case #3 - Diffusion Impairment

Diffusion Impairment

Diffusion Impairment

Case #4 - Shunt

Assessment of Hypoxia

Total Shunt(room air)

Mechanisms of Hypercapnia

Assessment of Ventilation

Alveolar Hypoventilation

Determinants of Ventilation

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