14 results
Hypernatremia Diagnosis and Workup

Step 1 . Repeat the sodium concentration.
Step 2.  Check plasma osmolality.
NORMAL PLASMA
Hypernatremia Diagnosis ... and Workup Step ... NORMAL PLASMA OSMOLALITY ... #Diagnosis #Workup ... #Algorithm #Nephrology
Diagnostic Approach to Hyponatremia
Box A:
 • Normo/hyperosmolar Hyponatremia: Glucose, Mannitol, Glycine, Contrast media, Maltose
 • Pseudohyponatremia:
Diagnostic Approach ... Box A: • Normo ... Primary Polydipsia, Low ... #Diagnosis #Algorithm ... #workup
Hypernatremia - Differential Diagnosis Workup Algorithm

1) Check Urine Osmolality:
 > 600 mOsm/kg - Implies extrarenal mechanism
Differential Diagnosis ... Workup Algorithm ... • Euvolemic (Low ... #Workup #Algorithm ... #nephrology #sodium
Workup of Hypercalcemia - Differential Diagnosis Algorithm
High or Normal PTH:
 • Hyperparathyroidism: Parathyroid adenoma, Parathyroid hyperplasia,
Workup of Hypercalcemia ... Algorithm High ... or Normal PTH: ... #Algorithm #Workup ... #nephrology #PTH
Systemic Lupus Erythematosus (SLE) - Diagnosis and Management Summary
 • Epidemiology: 10-180/100,000, Typically Age 20-40, F:M
(SLE) - Diagnosis ... - CRP: Usually normal ... • Immunologic Workup ... 60-80% - Low ... Erythematosus #Diagnosis
Drug Induced Lupus vs SLE
Drug Induced Lupus (DIL):
 • Epidemiology: -10% of all lupus cases, drug-dependent,
CRP - Usually normal ... • Immunologic Workup ... in >90% - Low ... #sle #comparison ... #diagnosis #management
Physiologic Approach to Hypotonic Hyponatremia
The next time you have a case of hypotonic hyponatremia, give the
remember than the normal ... volume-based algorithm ... can be high or low ... #differential #diagnosis ... table #sodium #nephrology
Myositis and Myopathies
Polymyositis 
 • Progressive, symmetric muscle weakness 
 • Elevated CK, +Anti-Jo, +Anti-Mi2
Dermatomyositis
Elevated ESR, Normal ... Body Myositis • Slow ... muscle weakness • Normal ... #differential #diagnosis ... #comparison #rheumatology
Anemia Diagnostic Algorithm

Mean corpuscular (cell) volume (MCV): Average RBC size. Under 80 = microcytic. Between 80-95
Anemia Diagnostic ... Normal range 11.5% ... Low in bone marrow ... #Diagnosis #Workup ... #Hematology #Microcytic
Rapidly Progressive Glomerulonephritis (RPGN)
RPGN has three primary pathophysiologic causes differentiated by immunofluorescence

Immune Complex Mediated (granular staining):
staining): • Low ... Post-strep GN, Lupus ... Idiopathic • Normal ... #differential #diagnosis ... #algorithm #rheumatology