67 results
Approach to the A-a Gradient
A-a gradient = PAO2 - PaO2
A-a gradient = [FiO2 x (Patm -
A-a gradient = PAO2 ... - PaO2 A-a gradient ... Hypoventilation Syndrome ... Hepatopulmonary Syndrome ... Hypoxia #hypoxemia #differential
Causes of Unprovoked Pediatric Seizures -  Epilepsy Syndromes - Differential Diagnosis Algorithm 
Infantile:
 • Benign
- Differential ... of Infancy • West ... Syndrome • Dravet ... Syndrome Generalized ... Unprovoked #Seizures #Differential
Freiberg's Test for Piriformis Syndrome

Flex the hip to 90 degrees, internally rotate the hip.
Pain in the
Freiberg's Test ... for Piriformis Syndrome ... #Piriformis #syndrome ... #Freibergs #Test ... lumbar #clinical #video
Causes of Recurrent Pregnancy Loss - Differential Diagnosis Algorithm
Environmental:
 • Toxin (organic solvents, mercury, lead)
 •
Pregnancy Loss - Differential ... Antiphospholipid syndrome ... hyperthyroidism • PCOS ... • Asherman's Syndrome ... Spontaneous #Abortion #Differential
Acid Base Disorders - Blood Gas Interpretation

Steps for Blood Gas Interpretation: 
1. Acidemia or Alkalemia? 
2.
Differentials? ... Metabolic: pH pCO2 ... acidosis Step 5 - Differential ... D-lactate (short bowel syndrome ... Base #Gas #VBG #differential
Pupils: Localization in Coma
 • Small, Reactive pupils: Metabolic coma.
 • Unilateral Fixed, dilated pupil :
uncal herniation, PCOM ... • Horner's syndrome ... Coma #Neurology #differential
Hirsutism - Differential Diagnosis
Defined as excessive dark, coarse, male-pattern hair growth
Hirsutism causes in premenopausal women:
 •
Hirsutism - Differential ... premenopausal women: • PCOS ... Rare: Cushing's Syndrome ... Ovary • Cushing's Syndrome ... mendesthiagob #Hirsutism #Differential
Pace Maneuver for Piriformis Syndrome

With the patient's hips and needs flexed to 90 degrees, the patient
for Piriformis Syndrome ... The test is positive ... Pace #Maneuver #Test ... #Piriformis #Syndrome ... #clinical #video
Causes of Secondary Hypertension - Differential Diagnosis and Screening Testing
Common causes: 
 • Renal parenchymal disease
Hypertension - Differential ... Renal ultrasound, Tests ... • Cushing’s syndrome ... Mineralocorticoid excess syndromes ... #Hypertension #Differential
Pulmonary Renal Syndrome

Definition: Diffuse alveolar hemorrhage + Glomerulonephritis
Presentation (Pulmonary and renal manifestations can occur weeks apart):
Pulmonary Renal Syndrome ... symptomatology Differential ... Pulmonary Renal Syndromes ... , biopsy By Tess ... #differential #