11 results
Pulmonary Renal Syndrome

Definition: Diffuse alveolar hemorrhage + Glomerulonephritis
Presentation (Pulmonary and renal manifestations can occur weeks apart):
symptomatology Differential ... ANCA-positive vasculitis ... ANCA-negative vasculitis ... Cryoglobulinemia) • Immune Complex ... Renal #Syndrome #differential
Causes of ST Segment Elevation - Differential Diagnosis Framework

STEMI:
 • Upsloping convex STE: "Pardee's sign" +
- Differential ... precedes the QRS complex ... Pulmonary Embolism ... or in-complete ... #differential #
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
- Differential ... progressing GN • New pulmonary ... tracts Immune Complex ... ear disease Differential ... differential #diagnosis
Rapidly Progressive Glomerulonephritis (RPGN)
RPGN has three primary pathophysiologic causes differentiated by immunofluorescence

Immune Complex Mediated (granular staining):
immunofluorescence Immune Complex ... With associated pulmonary ... Glomerulonephritis #Vasculitis ... #differential #
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
Vasculitis - Differential ... progressing GN • New pulmonary ... Differential Diagnosis ... pauci-immune GN Immune Complex ... #Differential #
Pulmonary Renal Syndromes - OnePager Summary
Autoimmune ANCA vasculitis (AAV): GPA (granulomatous with polyangiitis), EGPA (eosinophilic granulomatosis
Autoimmune ANCA vasculitis ... palpable purpura 2/2 vasculitis ... mononeuritis multiplex WORKUP ... coagulopathy) • CBC w differential ... Renal #Syndromes #differential
Causes of Petechial Rash - Differential Diagnosis Algorithm

Pinpoint areas (less than 2 mm) of hemorrhage, which
Petechial Rash - Differential ... Infection - Vasculitis ... - Autoimmune Vasculitis ... deficiency Work ... Up: • Complete
Weakness - Differential Diagnosis Framework

Approach To Weakness:
 • Non-neuromuscular disorder (Cardiac, pulmonary etc)
 • CNS ->
Weakness - Differential ... disorder (Cardiac, pulmonary ... Inflammatory: Vasculitis ... dystrophies Work ... #Weakness #Differential
Elevated Lactate Dehydrogenase (LDH) - Differential Diagnosis Framework

LDH is a cytoplasmic enzyme present in tissues throughout
Dehydrogenase (LDH) - Differential ... Legionnaires disease • Pulmonary ... tumor burden) Vasculitis ... Idiosyncratic LDH Elevation ... Dehydrogenase #Elevated #differential
Causes of Lactate Elevation, Lactic Acidosis - Differential Diagnosis

The most common causes of hyperlactatemia are usually:
Causes of Lactate Elevation ... Lactic Acidosis - Differential ... the patient’s complete ... output - Acute pulmonary ... #Differential #