56 results
Diagnosing Vitamin B12 and/or Folate Deficiency

It turns out that simply measuring serum levels of B12 or
with low B12 stores ... normal tissue stores ... the first line tests ... tissue folate stores ... Diagnosis #Nutrition #Hematology
Mixing Study
 • Clotting tests can be abnormal due to either a clotting factor deficiency, or
clotting factor deficiency ... Patient has a factor deficiency ... Study #diagnosis #hematology ... #pathophysiology ... #hematology #laboratory
Iron Deficiency Anemia (IDA)
Tests:
 • MCV/RBC - RBC ↓ in proportion to the ↓ in hemoglobin
Iron Deficiency ... Anemia (IDA) Tests ... total body iron stores ... DharSaty #Iron #Deficiency ... Fe #diagnosis #hematology
Causes of Hyponatremia - Differential Diagnosis Algorithm
Hypovolemia, UNa > 20: 
 • Renal losses, Diuretic excess,
Causes of Hyponatremia ... , Salt-losing deficiency ... Hypothyroidism, Stress ... Diagnosis #Algorithm #Causes ... #nephrology
Etiologies of Folate Deficiency
 • Decreased dietary intake - uncommon in this era
 • Increased requirements
Etiologies of Folate Deficiency ... folate that can cause ... mobilize folate stores ... depleted tissue stores ... differential #diagnosis #hematology
Allopecia - Differential Diagnosis Framework for Hair Loss

Localized / Focal Hair Loss Pattern:
 • Scarring Alopecia:
Lithium • Stress ... disease • Pull test ... Scaling, pustules, crusts ... texture at bald spots ... Initial Laboratory Tests
Causes of B12 deficiency. 

This great diagram shows normal absorption and outlines most possible causes. At
Causes of B12 deficiency ... most possible causes ... the top is a B12-deficient ... But the rest involve ... #Diagnosis #Pathophysiology
Diagnostic Algorithm for Dizziness and Vertigo
Peripheral Vertigo:
 • Attacks: Sudden, severe, can last anywhere from seconds
Varies • No neurologic ... with vascular causes ... findings BPPV • Short-lived ... positional episodes caused ... or supine roll test
Hyponatremia - Differential Diagnosis Algorithm
Hypovolemic - Give volume
Hypervolemic (Edematous) - Look for and treat underlying cause
treat underlying cause ... Stress, Nausea, ... Glucocorticoid Deficiency ... Algorithm #diagnosis #nephrology
Froment’s Test for Ulnar Nerve Palsy

This tests for pinch grip weakness caused by ulnar nerve palsy,
Froment’s Test for ... Palsy This tests ... grip weakness caused ... clinical #video #neurology ... #orthopedics #sports