OnlineMedEd Shared "Hypersensitivity Reactions" - 18 Picmonics

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Hypersensitivity Reactions

Hypersensitivity Type I
Previous Antigen Exposure
Immediate Reaction
IgE Cross-linking
Presensitized Mast Cells
Histamine Release
Vasodilation
Anaphylaxis
Allergies
Treatment
Epinephrine
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Hypersensitivity Type II
Cytotoxic
IgM or IgG antibody-mediated
Membrane Attack Complex (MAC)
Mechanism
Opsonization
Complement Activation
NK Cells
Testing
Direct Coombs test
Indirect Coombs Test
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1 min
Hypersensitivity Type III
Immune Complex
Antigen-antibody (IgG) complex activates complement
Neutrophils release lysozomal enzymes
Examples
Arthus Reaction
Serum Sickness
Systemic Lupus Erythematosus (SLE)
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Hypersensitivity Type IV
Delayed-Type Hypersensitivity
T Cell Mediated
Antibody Independant
Macrophages Activated
Examples
Transplant Rejection
PPD Skin Test
Contact Dermatitis
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1 min
Anaphylaxis Intervention
Intervention
Assess Airway and Oxygen Needs
Reassure Patient with Anxiety
Trendelenburg Position
Methylprednisolone (Solu-medrol)
Epinephrine
Diphenhydramine (Benadryl)
Medical Alert Bracelet
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Anti-glomerular Basement Membrane Antibodies
Glomerulonephritis
Goodpasture's Disease
Linear immunofluorescence
Hemoptysis
Hematuria
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Hemolytic Uremic Syndrome (HUS)
Children
Pathophysiology
Preceded by Acute Diarrheal Illness
Endothelial Damage
Classic Triad of Symptoms
Microangiopathic Hemolytic Anemia (MAHA)
Thrombocytopenia
Renal Failure
Labs
Helmet cells
LDH
Treatment
Dialysis
Supportive
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Graves' Disease Characteristics
Women 20-40 years old
Pathophysiology
Anti-TSH Receptor Antibodies
Symptoms
Ophthalmopathy
Exophthalmos
Hyperthyroidism
Goiter
Pretibial Myxedema
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Graves' Disease Labs and Treatment
Labs
Decreased TSH
Increased T3
Increased T4
Radioactive Iodine Uptake (RAIU)
Treatment
Beta blocker
Methimazole
Radioiodine Ablation
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Myasthenia Gravis
Mechanism
Antibodies to Acetylcholine Receptor
Symptoms
Ptosis
Diplopia
Weakness with Muscle Use
Respiratory Death
Thymus Associated
Treatment
Acetylcholinesterase Inhibitors
Plasmapheresis
Thymectomy
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Myasthenia Gravis Assessment
Weakness with Muscle Use
Diplopia
Ptosis
Dysphagia
Difficulty Speaking
Fatigue
Complications
Cholinergic Crisis
Overmedicated
Myasthenic Crisis
Not Enough Medication
Respiratory Muscle Paralysis
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Lambert-Eaton Syndrome
Mechanism
Autoantibody to the Presynaptic Calcium Channel on Motor Neurons
Inhibits Acetylcholine (ACh) Release at Neuromuscular Junction
Paraneoplastic Syndrome
Small Cell Lung Cancer
Symptoms
Proximal Muscle Weakness
Improves with Muscle Use
Autonomic Symptoms
Extraocular Muscle Sparing
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Multiple Sclerosis Interventions
Drug Therapy
Corticosteroids
Interferon Beta
Dimethyl Fumarate (Tecfidera)
Fingolimod (Gilenya)
Mitoxantrone (Novantrone)
Natalizumab (Tysabri)
Considerations
Increase Exercise
Identify Triggers
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Multiple Sclerosis Assessment
Cause/Mechanism
Nerve Fiber Demyelination
Assessment
Motor Issues
Cerebellar Signs
Fatigue
Paresthesias
Spasticity
Urinary Incontinence
Optic Neuritis
Considerations
Women Between 20-50 Years Old
Relapse and Remission of Symptoms
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Rheumatoid Arthritis Assessment
Mechanism
Destruction of Connective Tissue and Synovial Membrane
Signs and Symptoms
Inflammation of Joints
Morning Stiffness
Nodules
Joint Deformities
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Rheumatoid Arthritis Interventions
Lifestyle Modifications
Heat and Cold Applications
Therapeutic Exercise
Balance Rest and Activity
Drug Therapy
NSAIDs
DMARDs
Glucocorticoids
Considerations
PT/OT
Reconstructive Joint Surgery
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Guillain-Barre Syndrome Assessment
Assessment
Ascending Paralysis
Muscle Weakness
Paresthesias (Pins and Needles)
Diplopia
Difficulty Speaking
Dysphagia
Labile Blood Pressure
Loss of Bowel and Bladder Control
Considerations
Aggressive Airway Management
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Celiac Disease
Cause
Intestinal Mucosa Damage
Ingestion Wheat, Barley, Rye
Assessment
GI Distress
Steatorrhea
Weight Loss
Dermatitis Herpetiformis
Interventions
Gluten-free Diet
Considerations
Screening
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2 mins

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