9 results
Causes of Hypoxemia- Differential Diagnosis Algorithm
Ventilation/perfusion Mismatch
 • Airway Disease (Asthma, COPD)
 • Vascular (PE*)
 •
Causes of Hypoxemia ... • Ventricular Septal ... Defect ** • Atrial ... Septal Defect ... to Left Shunt
Atrial Septal Defect (ASD) with Shunting on Echocardiogram with Contrast (a4c)

An elderly patient with dyspnea -
Atrial Septal Defect ... (a4c) An elderly ... #Septal #Defect ... #a4c #clinical ... #pocus #bubble #
ASD on Bubble Contrast Echocardiogram (a4c)
A patient with an anterior STEMI (take a look at the
ASD on Bubble Contrast ... you close the defect ... Ivan_Echocardio #atrial ... #septal #defect ... #ASD #Bubble #Contrast
Causes of Cyanosis in the Newborn - Differential Diagnosis Algorithm
Peripheral Only:
 • Poor Perfusion
 • Acrocyanosis
Hemoglobinopathy:
Defect • Atrioventricular ... Septal Defect ... Arteriosus • Atrial ... Septal Defect ... Total Anomalous Pulmonary
Hepatopulmonary Syndrome - Diagnosis and Management Summary
A defect in arterial oxygenation due to a gas exchange
Management Summary A defect ... defect (Type 1) ... or anatomic shunt ... cycles after right atrial ... • Oxygenation defect
Hypoxemic Respiratory Failure - Differential Diagnosis Framework
DECREASED INSPIRED OXYGEN
 • Low PATM Can decrease first part
defects) VENTILATION ... direction leads to hypoxemia ... shunting (eg, atrial ... or ventricular septal ... defects) • Does
Negative Contrast Effect in Right Atrium - Differential Diagnosis
1. Small secundum ASD or PFO with left
Effect in Right ... left to right shunt ... #Effect #Right ... echocardiogram #s4c ... #pocus #bubble
Approach to the A-a Gradient
A-a gradient = PAO2 - PaO2
A-a gradient = [FiO2 x (Patm -
Disease and more • Diffusion ... Defect: Pulmonary ... Gradient #alveolar #arterial ... #pulmonary #Hypoxia ... #hypoxemia #differential
Double Shunt on Echocardiogram
What do you see on this saline contrast study, in a patient with
liver disease and pulmonary ... Early transit of bubbles ... as RAP>LAP as atrial ... septum shifts left ... clinical #pocus #a4c