Annalyse Shared "Week 6" - 18 Picmonics
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Week 6
Coagulation Cascade
- Secondary Hemostasis
- Intrinsic Pathway
- Partial Thromboplastin Time (PTT)
- Heparin
- Extrinsic Pathway
- Prothrombin Time (PT)
- Warfarin
- Common Pathway
- Thrombin
- Convert Fibrinogen to Fibrin
- Stabilizes the Platelet Plug
2 mins
PT/PTT Lab Values
- Prothrombin Time (PT)
- 10-14 seconds
- Activated Partial Thromboplastin Time (PTT or aPTT)
- 25-35 seconds
1 min
Von Willebrand Disease
- Mixed platelet and coagulation disorder
- Mechanism
- Autosomal Dominant Condition Leading to Reduced vWF
- Defect in platelet plug formation
- Labs
- Increased Bleeding Time
- PTT increased
- Factor VIII decreased
- Normal platelet count
- Treatment
- DDAVP (synthetic vasopressin)
1 min
Lesch-Nyhan Syndrome
- X-linked Recessive
- Absence of HGPRT
- Hypoxanthine to IMP
- Guanine to GMP
- Excess uric acid
- Gout
- Retardation
- Self-mutilation
- Choreoathetosis
- PRPP is increased
2 mins
Vitamin K1 (Phytonadione)
- Mechanism
- Synthesizes Clotting Factors II, VII, IX, X
- Indications
- Hypoprothrombinemia
- Newborn Prophylaxis
- Bleeding from Warfarin Overdose
- Side Effects
- Shock
- Kernicterus
- Cardiac Arrest
- Considerations
- Bile Salts required for Intestinal Absorption
- Increased Risks with IV Administration
2 mins
Adenosine Deaminase Deficiency
- Adenosine to Inosine
- Excess ATP
- Inhibition of Ribonucleotide Reductase
- Prevents DNA Synthesis
- Decreases B Cells and T Cells
- Major cause of SCID
1 min
Gout Disease
- Acute Inflammatory Monoarthritis
- Epidemiology
- Primarily in Males
- Pathophysiology
- Precipitation of Monosodium Urate Crystals
- Underexcretion of Uric Acid
- Overproduction of Uric Acid
- Negatively Birefringent, Needle-Shaped
- Symptoms
- Swollen, Red, Painful Joint
- Asymmetric Joint Distribution
- Podagra
- Tophus
- After Large Meal or Alcohol
2 mins
Gout Treatment
- Acute (Acute-angle)
- NSAIDs
- Glucocorticoids
- Colchicine
- Impairs Leukocyte Chemotaxis
- Chronic Gout (Crone Goat)
- Inhibit Xanthine Oxidase
- Allopurinol
- Febuxostat
- Inhibit Reabsorption of Uric Acid
- Probenecid
1 min
Severe Combined Immunodeficiency (SCID)
- Both B and T Cell Deficiency
- Recurrent Viral, Bacterial, Fungal, Protozoal Infections
- Defective Interleukin (IL) 2 Receptor
- X-Linked
- Adenosine Deaminase Deficiency
- Failure to Synthesize MHC II Antigens
- Treat with Bone Marrow Transplant
2 mins
Folate Deficiency
- Clinical Features
- Macrocytic Anemia
- Megaloblastic Anemia
- Etiologies
- Malabsorption
- Dietary
- Tea and Toast
- Alcoholics
- Medication-induced
- Methotrexate
- Trimethoprim
- Increased Requirement
- Hemolytic Anemia
- Pregnancy
2 mins
Ornithine Transcarbamylase Deficiency
- Pathophysiology
- Most Common Urea Cycle Disorder
- X-Linked Recessive
- Signs and Symptoms
- Hyperammonemia
- Decreased BUN
- Carbamoyl Phosphate is Converted to Orotic Acid
- Pyrimidine Synthesis Pathway
- Evident in Babies
3 mins
Vitamin K
- Sources
- Dark Green Leafy Vegetables
- Synthesized by Intestinal Flora
- Mechanism
- Activated by Epoxide Reductase
- Gamma Carboxylation of Glutamate
- Activation of Clotting Factors II, VII, IX, X, Protein C and S
- Considerations
- Deficiency with Broad Spectrum Antibiotics
- Neonatal Hemorrhage with Increased PT and aPTT
- Warfarin is a Vitamin K Antagonist
4 mins
Orotic Aciduria
- Pathophysiology
- Autosomal Recessive
- Defect in UMP Synthase
- De Novo Pyrimidine Synthesis Pathway
- Symptoms
- Increased Orotic Acid in Urine
- Megaloblastic Anemia
- No Response to B12 or Folate
- Non-Hyperammonemic
- Failure to Thrive
- Treatment
- Oral Uridine Monophosphate
2 mins
Azathioprine (Imuran)
- Mechanism
- Antimetabolite
- Prodrug of 6-mercaptopurine (6-MP)
- Inhibits Synthesis of Nucleic Acids
- Indications
- Autoimmune Disorders
- Kidney Transplantation
- Side Effects
- Myelosuppression
- Increased Toxicity with Allopurinol Use
- Pancreatitis
- Malignancy
3 mins
Methotrexate
- Indications
- Rheumatoid Arthritis
- Cancer
- Medical Abortion
- Mechanism
- Folic Acid Analog
- Inhibits Dihydrofolate Reductase
- Side Effects
- Pulmonary Fibrosis
- Myelosuppression is Treated with Leucovorin Rescue (Folinic Acid)
- Macrocytic Anemia
- Hepatitis
- Teratogenic
- Mucositis
2 mins
Acyclovir (Zovirax)
- Mechanism
- Guanosine Analog
- Inhibits Viral Replication
- Thymidine Kinase Activation
- Indications
- Herpes Simplex Virus (HSV)
- Varicella Zoster Virus (VZV)
- Side Effects (Oral)
- Headache
- GI Distress
- Side Effects (IV)
- CNS Toxicity
- Nephrotoxicity (Crystalline Nephropathy)
- Considerations
- Prevents Recurrent Episodes
- Slow IV Infusion
2 mins
Protein C or S Deficiency
- Pathophysiology
- Autosomal Dominant
- Inability to Inactivate Factor Va and VIIIa
- Symptoms
- Hypercoagulable State
- Recurrent DVTs or DVTs at Young Age
- Treatment
- Begin Heparin
- Slowly Bridge to Warfarin
- Hemorrhagic Skin Necrosis
2 mins
Streptococcus Pyogenes Disease
- Pyogenic
- Pyogenic
- Pyogenic Pharyngitis
- Impetigo
- Cellulitis
- Toxigenic
- Toxic Shock-Like Syndrome
- Scarlet Fever
- Sandpaper Rash
- Strawberry Tongue
- Immunologic
- Immunologic
- Rheumatic Fever
- Antibodies to M Protein
- Acute Glomerulonephritis (Post Streptococcal Glomerulonephritis)
2 mins
