95 results
Approach to the A-a Gradient
A-a gradient = PAO2 - PaO2
A-a gradient = [FiO2 x (Patm -
/0.8)] - PaO2 Normal ... A-a gradient to normal ... : Atelectasis, ARDS ... Embolism, Obstructive Lung ... , Interstitial Lung
Lung Ultrasound: Cardiogenic Pulmonary Edema vs ARDS
Cardiogenic Pulmonary Edema:
 • Smooth pleural line
 • AIS >
Pulmonary Edema vs ARDS ... may be P > A, Normal ... pulmonary edema / ARDS ... UAlberta_Sono #APE #ARDS ... pulmonary #edema #comparison
Berlin Criteria for Acute Respiratory Distress Syndrome (ARDS) 
- Respiratory symptoms must have begun within one
Distress Syndrome (ARDS ... lobar collapse, lung ... severity of the ARDS ... - 200 mm Hg < PaO2 ... >= 5cm H2O #ARDS
Barcode Sign in Pneumothorax on POCUS - M-Mode

seashore sign: normal lung sliding

barcode/stratosphere sign: pneumothorax 

#Pneumothorax #Barcode
Pneumothorax on POCUS ... seashore sign: normal ... lung sliding ... Barcode #Sign #POCUS ... #Diagnosis #Comparison
Pulmonary Pathology and Associated Lung Ultrasound Findings
Pneumothorax:
 - No lung sliding/barcode sign
 - Lung point (hard
bilateral B-lines - Normal ... Distress Syndrome (ARDS ... unilateral B-lines - Normal ... submassive PE) POCUS ... #POCUS #ultrasound
POCUS appearance of Pleural thickening at right base. (patient was referred as possible pleural effusion, referral
POCUS appearance ... available) compared to normal ... Pleural #Thickening #POCUS ... #Clinical #Comparison ... #Lung #Ultrasound
Acute Respiratory Distress Syndrome – ARDS: Clinical Cheat Sheet

An acute diffuse, inflammatory lung injury, leading to
Distress Syndrome – ARDS ... , inflammatory lung ... permeability, lung ... with decreased lung ... on CT or CXR ● PaO2
Hypoxemia vs Hypoxia
Hypoxemia - Partial pressure of arterial oxygen (PaO2) is below normal
Hypoxia - Insufficient oxygen
arterial oxygen (PaO2 ... ) is below normal ... compensate for low PaO2 ... differential #diagnosis #comparison
Bilateral B-Lines in case of Pneumonia on Lung POCUS

Young healthy pt with fever/dyspnea. POCUS lung exam
POCUS Young ... POCUS lung exam ... Pulmonary edema, ARDS ... Lung POCUS shows ... Lung POCUS invaluable
Basics of Waveform Capnography
Waveform capnography assesses ventilation by monitoring exhaled carbon dioxide
Can use measurement and morphology
) • Abnormal morphology ... Assessing for CO2 ... Transition as CO2 ... - Arterial CO2 ... the heart to the lung