11 results
Hypoxemia Differential Diagnosis Algorithm by A-a Gradient

Normal A-a Gradient:
 • ↓ Atmospheric pressure
 • Hypoventilation: CNS
Hypoxemia Differential ... Diagnosis Algorithm ... (↑Shunting), ↓Perfusion ... #Diagnosis #Algorithm ... #pulmonary #Aa
Causes of Hypoxemia- Differential Diagnosis Algorithm
Ventilation/perfusion Mismatch
 • Airway Disease (Asthma, COPD)
 • Vascular (PE*)
 •
Causes of Hypoxemia ... Differential Diagnosis Algorithm ... Ventilation/perfusion ... • Interstitial lung ... #Diagnosis #Algorithm
Approach to the A-a Gradient
A-a gradient = PAO2 - PaO2
A-a gradient = [FiO2 x (Patm -
Embolism, Obstructive Lung ... Disease and more • Diffusion ... Defect: Pulmonary ... , Interstitial Lung ... #Hypoxia #hypoxemia
COVID-19 on Lung POCUS - Day 2

Day 2 after COVID diagnosis. Less sore throat, cough &
COVID-19 on Lung ... POCUS - Day 2 ... bilateral pleural effusion ... #ultrasound #pulmonary ... #Effusion
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One-page resource for Lung POCUS in COVID19:
- likely (unproven) sensitive due to peripheral distribution of lesions
One-page resource for Lung ... POCUS in COVID19 ... CT - pleural effusions ... #POCUS #COVID19 ... #coronavirus #pulmonary
Hypoxemic Respiratory Failure - Differential Diagnosis Framework
DECREASED INSPIRED OXYGEN
 • Low PATM Can decrease first part
: Interstitial lung ... gravity-dependent gradients ... direction leads to hypoxemia ... bypassing the lungs ... Respiratory #Failure #hypoxia
COVID-19 Findings on Lung ultrasound
 - Thickened pleural line
 - B lines (multifocal, discrete, or confluent)
COVID-19 Findings ... on Lung ultrasound ... consolidation - Pleural effusion ... patients with pulmonary ... #POCUS #Diagnosis
Hepatopulmonary Syndrome - Diagnosis and Management Summary
A defect in arterial oxygenation due to a gas exchange
absence of intrinsic lung ... upright position • Hypoxemia ... on radioactive lung ... or pulmonary angiography ... 80mmHg or A-a gradient
Lung POCUS: Small right anechoic parapneumonic effusion. Note B-lines. Curvilinear probe used. More commonly seen in
Lung POCUS: Small ... parapneumonic effusion ... prelim reports of COVID19 ... Parapneumonic #Pleural #Effusion ... #Lung #POCUS #Pulmonary
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CT and ultrasonographic features of COVID-19 pneumonia
Lung CT:
 - Thickened pleura
 - Ground glass shadow and
ultrasonographic features of COVID ... - Pulmonary infiltrating ... patients with pulmonary ... fibrosis #COVID19 ... ChestCT #Ultrasound #POCUS