8 results
Causes of Hypoxemia- Differential Diagnosis Algorithm
Ventilation/perfusion Mismatch
 • Airway Disease (Asthma, COPD)
 • Vascular (PE*)
 •
of Hypoxemia- Differential ... • Interstitial lung ... Right to Left Shunt ... Right to Left Shunt ... Hypoxemia #Hypoxia #Differential
Approach to the A-a Gradient
A-a gradient = PAO2 - PaO2
A-a gradient = [FiO2 x (Patm -
(assumes Room Air ... Embolism, Obstructive Lung ... Defect: Pulmonary ... , Interstitial Lung ... Hypoxia #hypoxemia #differential
Pulmonary Pathology and Associated Lung Ultrasound Findings
Pneumothorax:
 - No lung sliding/barcode sign
 - Lung point (hard
cases - Dynamic air ... Possible bilateral effusion ... submassive PE) POCUS ... #pulmonary #differential ... #POCUS #ultrasound
Hepatopulmonary Syndrome - Diagnosis and Management Summary
A defect in arterial oxygenation due to a gas exchange
absence of intrinsic lung ... or anatomic shunt ... Arterial blood gas (ABC ... on radioactive lung ... older) on room air
Upper Lobe Lung Diseases - STAR CHASERS Mnemonic

S - Silicosis
T - Tuberculosis
A - Ankylosing Spondylitis
R -
Upper Lobe Lung ... ventilation to perfusion ... substances primarily affect ... -W237. 10.2214/AJR ... #diseases #differential
Negative Contrast Effect in Right Atrium - Differential Diagnosis
1. Small secundum ASD or PFO with left
Negative Contrast Effect ... Right Atrium - Differential ... left to right shunt ... echocardiogram #s4c ... #pocus #bubble
VSD on Newborn POCUS Echocardiogram (A4C)
Term newborn presents with irritability and increased work of breathing. Bedside
VSD on Newborn POCUS ... Echocardiogram (A4C ... copious B lines on lung ... in significant shunt ... ventricular #septal #defect
Continuous Positive Airway Pressure in the Neonate

WHY CPAP? 
• Maintain airway patency 
• Helps avoid alveoli
wall • Improves lung ... and fit of the mask ... and hat to avoid air ... oxygen requirement, effort ... - Monitor HR. perfusion