983 results
V/Q Mismatch Physiology

by Dr. Lizzy Hastie @LizzyHastie

#VQMismatch #pathophysiology #diagnosis #pulmonary
V/Q Mismatch Physiology ... LizzyHastie #VQMismatch
Hypoxemia Differential Diagnosis Algorithm by A-a Gradient

Normal A-a Gradient:
 • ↓ Atmospheric pressure
 • Hypoventilation: CNS
Algorithm by A-a Gradient ... Normal A-a Gradient ... compliance ↑ A-a Gradient ... Alveolar • V/Q Mismatch ... pulmonary #Aa #Gradient
Approach to the A-a Gradient
A-a gradient = PAO2 - PaO2
A-a gradient = [FiO2 x (Patm -
Approach to the A-a Gradient ... A-a gradient = ... PAO2 - PaO2 A-a gradient ... A-a Gradient ≤ ... and more • V/Q Mismatch
Severity of Aortic Stenosis in Adults 
Current ACC/AHA guidelines recommend cut-off values for Doppler-echocardiographic measurements of
0.6 cm2/m2, mean gradient ... transvalvular gradient ... , inconsistent grading ... <1 cm2 with a gradient
Lumbar Neural Foraminal Stenosis Grading 
  - Normal - No fat effacement, Keyhole appearance
Foraminal Stenosis Grading ... Spine #Report #Grading ... Diagnosis #Radiology #MSK
Cervical Central Canal and Neural Foraminal Stenosis Grading

Cervical Central Canal Stenosis Grading
 - Normal - No
Foraminal Stenosis Grading ... Canal Stenosis Grading ... Foraminal Stenosis Grading ... Spinal #Stenosis #Grading ... Diagnosis #Radiology #MSK
Lumbar Central Canal Stenosis Grading 
  - Normal - No CSF effacement 
  -
Canal Stenosis Grading ... Spine #Report #Grading ... Diagnosis #Radiology #MSK
Aortic Stenosis Grading on echocardiography
The cut-offs for grading can be found in table 1. Discrepancies are
Aortic Stenosis Grading ... The cut-offs for grading ... 4.0 m/s and mean gradient
Lumbar stenosis guide we created to implement consistent radiology reporting across our multi-hospital network. 
Lumbar Central
Canal Stenosis Grading ... Foraminal Stenosis Grading ... Spine #Report #Grading ... Diagnosis #Radiology #MSK
Ascites Differential Diagnosis Table - Serum Ascites Albumin Gradient (SAAG)

SAAG ≥ 1.1:
 • Cirrhosis
 • Portal
Ascites Albumin Gradient ... Serum #Albumin #Gradient