7 results
TTP - Laboratory Evaluation for Thrombotic Thrombocytopenic Purpura

Activity of von Willebrand factor-cleaving protease activity - A
TTP - Laboratory ... Normal or slightly elevated ... Mild-to-moderate decrease ... Mild-to-moderate elevation ... WBC count and differential
Elevated Lactate Dehydrogenase (LDH) - Differential Diagnosis Framework

LDH is a cytoplasmic enzyme present in tissues throughout
Dehydrogenase (LDH) - Differential ... Periodic paralyses CNS ... myocarditis, rheumatic fever ... Idiosyncratic LDH Elevation ... diagnosis #Laboratory
Heat Illnesses and Heat Stroke - Differential Diagnosis Framework

Heat Cramps:
 • Muscle pain or spasm -
Heat Stroke - Differential ... Volume depletion → Decreased ... sweaty skin - Decreased ... normal/mildly elevated ... acidosis - CPK elevation
CNS Infections - Viral Encephalitis and Bacterial Meningitis - Differential Diagnosis Framework

Viral Encephalitis:
MCC: Enteroviruses (e.g., coxsackievirus
CNS Infections - ... • Headache • Fever ... /L) • Mildly decreased ... meningeal signs (fever ... Singh @rav7ks #CNS
Causes of Lactate Elevation, Lactic Acidosis - Differential Diagnosis

The most common causes of hyperlactatemia are usually:
Causes of Lactate Elevation ... Lactic Acidosis - Differential ... - assess other laboratory ... muscle use • Decreased ... #Differential #
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
Vasculitis - Differential ... Vasculitis Differential ... Vasculitis: • Fevers ... artery tenderness - decreased ... chorioretinitis, CNS
SLE (Systemic Lupus Erythematosus)

Suspect:
Clinical evidence of (fatigue, rash, photosensitivity, inflammatory arthritis, weight loss, and fever) and
weight loss, and fever ... ) and laboratory ... permanent alopecia Differential ... sediment, and elevated ... and CNS • Headache