6 results
Hypoxemia Differential Diagnosis Algorithm by A-a Gradient

Normal A-a Gradient:
 • ↓ Atmospheric pressure
 • Hypoventilation: CNS
Hypoxemia Differential ... Diagnosis Algorithm ... : • Right-to-Left ... Shunt: Cardiac, ... #pulmonary #Aa
Approach to the A-a Gradient
A-a gradient = PAO2 - PaO2
A-a gradient = [FiO2 x (Patm -
(assumes Room Air ... • Right to Left ... UnremarkableLab #AA ... Hypoxia #hypoxemia #differential ... #diagnosis
Causes of Hypoxemia- Differential Diagnosis Algorithm
Ventilation/perfusion Mismatch
 • Airway Disease (Asthma, COPD)
 • Vascular (PE*)
 •
of Hypoxemia- Differential ... Diagnosis Algorithm ... Intracardiac Right ... ** • Atrial Septal ... Right to Left Shunt
Causes of Cyanosis in the Newborn - Differential Diagnosis Algorithm
Peripheral Only:
 • Poor Perfusion
 • Acrocyanosis
Hemoglobinopathy:
the Newborn - Differential ... Diagnosis Algorithm ... Only: • Poor Perfusion ... Arteriosus • Atrial ... #Diagnosis #Algorithm
Negative Contrast Effect in Right Atrium - Differential Diagnosis
1. Small secundum ASD or PFO with left
in Right Atrium ... shunt 2. ... #Right #Atrium ... echocardiogram #s4c ... #pocus #bubble
Hepatopulmonary Syndrome - Diagnosis and Management Summary
A defect in arterial oxygenation due to a gas exchange
or anatomic shunt ... cardiac cycles after right ... atrial passage ... Arterial blood gas (ABC ... 80mmHg or A-a gradient