The Calgary Guide to Understanding Disease @TheCalgaryGuide
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Acute Spinal Cord Injuries: Pathogenesis and clinical findings
 • Anterior Cord Syndrome -> Anterior spinal artery
below level of injury ... spinal artery injury ... below level of injury ... pathophysiology #signs #symptoms ... #orthopedics #neurology
Meralgia paresthetica: Pathogenesis and Clinical Findings
Compression/injury of Lateral Femoral Cutaneous Nerve (LFCN) -> Meralgia paresthetica
 •
Findings Compression/injury ... paresthetica • Symptoms ... 3-6 months of symptom ... sensory nerve, thus symptoms ... mass Sensory Symptoms
Myelopathy - Injury to the entire spinal cord - Signs and Symptoms
 • Ataxia (early sign)
Myelopathy - Injury ... cord - Signs and Symptoms ... diagnosis #signs #symptoms
Acute Rheumatic Fever: Pathogenesis and Clinical Findings

Delayed autoimmune reaction
-> Molecular mimicry
-> GAS antigen cross-reacts with host
->
cells -> Tissue injury ... Pancarditis and valvular injury ... diagnosis #signs #symptoms
Femoral Head Fracture: Pathogenesis and clinical findings
 • Posterior hip dislocation -> Impaction force from femoral
Avulsion or shearing injury ... lateral hip Signs/Symptoms ... pathophysiology #signs #symptoms
Prader-Willi Syndrome: Pathogenesis and clinical findings
 • Maternal uniparental disomy: inheriting 2 copies of maternal chromosome
Syndrome Signs/Symptoms ... pathophysiology #peds
Polyarteritis Nodosa (PAN): Pathogenesis and Clinical Findings

Medical Comorbidities Malignancies (most commonly hairy-cell leukemia)
Immunogenetic Predisposition: patient is
causes direct injury ... Diagnosis #Signs #Symptoms
Acute Otitis Media: Pathogenesis and Clinical Findings (in Children)
Upper Respiratory Tract Infection: 
 - Bacterial: Streptococcus
pathophysiology #diagnosis #symptoms ... #signs #peds #pediatrics
Childhood Immunization Schedule: Why we immunize
 • Diphtheria Toxin -> URT inflammation causes pseudomembrane with hardened
metabolites induce injury ... hemorrhagic rash; symptoms ... non-specific viral symptoms ... #Immunization #peds
21-Hydroxylase Deficiency (21-OHD): Pathogenesis and Clinical Findings
Autosomal recessive mutation in CYP21A2 coding for the enzyme 21-OHase
Signs/Symptoms/Complications ... endocrinology #peds