2211 results
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 = ... A-a Gradient ≤ ... Hypoventilation Syndrome ... Hepatopulmonary Syndrome
Diagnosis of ascites according to the serum ascites albumin gradient (SAAG)
SAAG ≥ 1.1:
 - Ascitic protein
ascites albumin gradient ... Late Budd-Chiari syndrome ... Early Budd-Chiari syndrome ... leak, Nephrotic syndrome ... ascites #albumin #gradient
Ascites Differential Diagnosis Table - Serum Ascites Albumin Gradient (SAAG)

SAAG ≥ 1.1:
 • Cirrhosis
 • Portal
Ascites Albumin Gradient ... • Nephrotic syndrome ... Serum #Albumin #Gradient
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
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 ... pulmonary #Aa #Gradient
Hepatopulmonary Syndrome (HPS) 

HPS-differential diagnosis:
1. Pulmonary vasculature
2. Diseases of the lung parenchyma
3. Pleura and diaphragm

HPS-diagnosis:
1. Patients
Hepatopulmonary Syndrome ... Alveolar-arterial oxygen gradient ... Hepatopulmonary #Syndrome
Hepatopulmonary Syndrome (HPS) Diagnosis Algorithm
Bubble echo is the first piece of the puzzle. The nail on
Hepatopulmonary Syndrome ... the dx is an A-a gradient ... Hepatopulmonary #Syndrome
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