Melinda Shared "Q1 Biochemistry I Exam 5" - 37 Picmonics
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Q1 Biochemistry I Exam 5
Acute Intermittent Porphyria (AIP)
- Pathophysiology
- Autosomal Dominant
- Inhibited Porphobilinogen Deaminase
- Increased Serum Porphobilinogen
- Increased Serum Delta-ALA
- Increased Urinary Porphyrin Precursors
- Signs & Symptoms
- Precipitated By P450 Inducers
- Painful Abdomen
- Polyneuropathy
- Psychological Disturbances
- Port Wine-Colored Urine
- Treatment
- Glucose and Hemin
- Considerations
- Avoid Triggers
3 mins
Porphyria Cutanea Tarda (PCT)
- Pathophysiology
- Inhibited Uroporphyrinogen Decarboxylase (UROD)
- Most Common Porphyria
- 20% Autosomal Dominant
- 80% Sporadic Type
- Hepatitis C Association
- Signs & Symptoms
- Photosensitivity
- Blistering of Skin
- Tea Colored Urine
- Diagnosis
- Increased Uroporphyrins (Urinary & Serum)
- Treatment
- Avoid Sunlight
- Phlebotomy
- Hydroxychloroquine (Low Dose)
3 mins
Aspirin
- Indications
- Fever
- Pain and Headache
- Cardiovascular Disease (CAD)
- Mechanism of Action
- Irreversible inhibition of COX-1 and COX-2
- Suppress Thromboxanes and Prostaglandins
- NSAID
- Side Effects
- Reye's Syndrome
- Tinnitus
- Peptic Ulceration
- Mixed Acidosis/Alkalosis
- Nephropathy
2 mins
Ibuprofen (Advil, Motrin)
- Mechanisms
- NSAID
- COX Inhibitor
- Indications
- General Pain
- Fever
- Inflammatory Conditions
- Side Effects
- GI Ulcers
- Nephrotoxicity
- Rash
- Considerations
- Avoid with Alcohol
- Risk of Thrombotic Event
2 mins
Acetaminophen
- Indications
- Fever
- Pain
- Mechanism of Action
- Reversibly Inhibits COX
- Acts Primarily in CNS
- Side Effect
- Hepatic Necrosis
- N-acetylcysteine Antidote
51 secs
Prednisone (Glucocorticoids)
- Mechanism
- Glucocorticoid
- Indications
- Inflammatory Conditions
- Organ Transplant Rejection
- Side Effects
- Cataracts and Glaucoma
- Cushing's Syndrome
- Osteoporosis
- Immunosuppression
- Hyperglycemia
- Ulcers
- Considerations
- Adrenal Insufficiency
- Taper Gradually
2 mins
Montelukast (Singulair)
- Mechanism
- Leukotriene Receptor Blocker
- Indications
- Allergic Rhinitis
- Asthma Prophylaxis
- Exercise Induced Bronchospasm
- Side Effects
- Fatigue
- Headache
- Mood Changes
- Suicidal Thoughts
- Considerations
- Increased Risk of Churg Strauss
2 mins
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
Bernard-Soulier Syndrome
- Mechanism
- Autosomal Recessive
- Deficiency of Glycoprotein Ib (GpIb) Receptor
- Symptoms
- Mucosal Membrane Bleeding
- Menorrhagia
- Easy Bruising
- Labs
- Large Platelets
- Increased Bleeding Time
- No Platelet Agglutination with Ristocetin
3 mins
Thrombotic Thrombocytopenic Purpura (TTP)
- Inhibition or deficiency of ADAMTS 13
- vWF Multimers are Not Degraded
- Microthrombi (and Emboli)
- Symptoms
- FAT RN Pentad
- Fever
- Anemia
- Thrombocytopenia
- Renal Dysfunction
- Neurologic Abnormalities (Altered Mental status)
- Treatment
- Plasmapheresis
- Corticosteroids
- Splenectomy
2 mins
Immune/Idiopathic Thrombocytopenic Purpura (ITP)
- Anti-GPIIb/IIIa or Anti-GPIb/IX Antibodies (IgG)
- Splenic MO phagocytose Ag-Ab complexes --> Splenomegaly
- Acute: Children, post-viral
- Elevated Thrombopoietin (TPO)
- Sx: Easy Bruising/Bleeding, Petechiae, Epistaxis, Gingival Hemorrhage
- Dx: Increased Megakaryocytes (BMBx), Large Platelets, Thrombocytopenia, Nml. PT & PTT
- Tx: Steroids, Plt Infusions, IVIG | Rituximab, Splenectomy, TPOR Agonists
Glanzmann Thrombasthenia
- Pathophysiology
- Autosomal Recessive or Acquired as an Autoimmune Disorder
- Deficiency of Glycoprotein IIb/IIIa (Gp IIb/IIIa) Receptor
- Defective Platelet-to-Platelet Aggregation
- Symptoms
- Mucous Membrane Bleeding (Gingival Bleeding)
- Easy Bruising
- Increased Bleeding Time
- Normal Platelet Count
- Considerations
- Avoid NSAIDs
2 mins
Alteplase
- Mechanism
- Tissue Plasminogen Activator
- Indications
- Thrombosis
- Side Effects
- Bleeding
- Contraindications
- Intracranial Hemorrhage
- Internal Hemorrhaging
- Considerations
- Minimize Bleeding
- Monitor for Shock
- Antidote
- Aminocaproic Acid
2 mins
Heparin Mechanisms
- Mechanism of Action
- Short Half-life
- Antithrombin Activation Cofactor
- Decrease Thrombin, Factor Xa
- Side Effects
- Bleeding
- Heparin Induced Thrombocytopenia (HIT)
- Antidote
- Protamine Sulfate
2 mins
Heparin Indications
- Indications
- Acute Coronary Syndrome (ACS)
- Prophylaxis
- Pulmonary Embolism
- Atrial Fibrillation
- Used during Pregnancy
1 min
Heparin Induced Thrombocytopenia (HIT)
- Pathophysiology
- 5-10 Days After Heparin Exposure
- Heparin-Platelet Factor 4 Complex
- Autoantibodies Form Against Complex
- Heparin-Platelet Factor 4-Antibody Complex Binds Platelets
- Platelet Aggregation
- Procoagulant Release
- Symptoms
- Thrombocytopenia
- Diagnosis
- Serotonin Release Assay (SRA)
- Treatment
- Stop Heparin, Start Direct Thrombin Inhibitor
2 mins
Warfarin
- Mechanism of Action
- Interferes with Vitamin K-dependent Clotting Factors
- Extrinsic Pathway
- Bridge with Heparin
- Indications
- Chronic Anticoagulation
- Side Effects
- Bleeding
- Necrosis
- Cytochrome P450
- Contraindications
- Pregnancy
- Antidote
- FFP + Vitamin K
2 mins
Hemophilia A, B, C
- X-linked Recessive
- A: Low Factor 8
- Hemarthrosis, Intramuscular Hematoma, Intracerebral Hemorrhage
- Mgmt: DDAVP + aminocaproic acid (anti-fibrinolytic)
- B: Low Factor 9
- C: Low Factor 11 | Autosomal Recessive
- Increased PTT (Intrinsic) ONLY
- Complications: Hemosiderin deposition, fibrosis
Crigler-Najjar Syndrome Type 1
- Pathophysiology
- Autosomal Recessive
- Absent UDP-glucuronosyltransferase
- Symptoms
- Neonatal Jaundice
- Kernicterus
- Diagnosis
- Normal Liver Function Tests
- Elevated Unconjugated Bilirubin
- Treatment
- Phototherapy
- Plasmapheresis
- Calcium Phosphate and Orlistat
- Death often by Age 2
- Considerations
- No Response to Phenobarbital
3 mins
Gilbert's Syndrome
- Pathophysiology
- Decreased UDP-Glucuronosyltransferase Activity
- Decreased Bilirubin Conjugation
- Signs and Symptoms
- Often Asymptomatic
- Jaundice (Mild)
- Fasting
- Stress
- Alcohol Intake
- Labs
- Increased Unconjugated Bilirubin
2 mins
