6 results
Hypoxemia Differential Diagnosis Algorithm by A-a Gradient

Normal A-a Gradient:
 • ↓ Atmospheric pressure
 • Hypoventilation: CNS
Hypoxemia Differential ... Diagnosis Algorithm ... Alveolar • V/Q Mismatch ... #Diagnosis #Algorithm ... #pulmonary #Aa
Approach to the A-a Gradient
A-a gradient = PAO2 - PaO2
A-a gradient = [FiO2 x (Patm -
A-a gradient = ... and more • V/Q Mismatch ... UnremarkableLab #AA ... arterial #pulmonary #Hypoxia ... #hypoxemia #differential
Causes of Hypoxemia- Differential Diagnosis Algorithm
Ventilation/perfusion Mismatch
 • Airway Disease (Asthma, COPD)
 • Vascular (PE*)
 •
Causes of Hypoxemia ... Differential Diagnosis Algorithm ... Ventilation/perfusion Mismatch ... #Hypoxia #Differential ... #Diagnosis #Algorithm
Hypoxemic Respiratory Failure - Differential Diagnosis Framework
DECREASED INSPIRED OXYGEN
 • Low PATM Can decrease first part
common than VIQ mismatch ... PERFUSION (V/Q) MISMATCH ... gravity-dependent gradients ... direction leads to hypoxemia ... Respiratory #Failure #hypoxia
Hepatopulmonary Syndrome - Diagnosis and Management Summary
A defect in arterial oxygenation due to a gas exchange
upright position • Hypoxemia ... - V/Q mismatch ... Quantifies degree of hypoxemia ... 80mmHg or A-a gradient
Hepatopulmonary Syndrome - Illness Script
HPS is a pulmonary disorder of chronic liver disease characterized by a
Mismatch? ... time = increased Aa ... gradient • Intrapulmonary ... portal HTN • Aa ... gradient ≥15 mmHg