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Path Final
Factor V Leiden Thrombophilia
Pathophysiology
Most Common Genetic Clotting Disorder in Caucasians
Genetic Point Mutation
Glutamine Replaces Arginine
Mutant Factor V
Resistant to Degradation by Activated Protein C
Symptoms
Hypercoagulability
Recurrent DVT (Increased Risk of Thromboembolism)
Considerations
Avoid Oral Contraceptives
Caution During Pregnancy
2 mins
Cystic Fibrosis Symptoms and Complications
Recurrent Pulmonary Infections
Chronic Bronchitis
Nasal Polyps
Pancreatic Insufficiency
Intestinal Obstruction
Malabsorption and Diarrhea
Vitamin Deficiencies
Chronic Hepatic Disease
Infertility in Males
1 min
Cystic Fibrosis Mechanisms
Autosomal Recessive
CFTR Chromosome 7
Cl- channel Defect
Decreased Chloride Secretion
Increased Na and Water Reabsorption
Increased Na and Cl in Sweat
Dehydration of Mucous Layers
2 mins
Cystic Fibrosis Diagnosis and Treatment
Diagnosis
Sweat Chloride Test > 60 mmol/L
Meconium Ileus
Treatment
N-acetylcysteine
Antibiotic Prophylaxis
Pulmonary Maintenance
Lung Transplant
Vitamin Replacement
1 min
Sickle Cell Anemia (Mechanism)
Intrinsic Normocytic Hemolytic Anemia
Point Mutation
Autosomal Recessive
African American
Dehydration or Decreased O2
Newborns Asymptomatic
Heterozygote Malarial Resistance
2 mins
Sickle Cell Anemia (Signs and Complications)
Signs
Crew-cut on Skull X-ray
Complications
Auto-splenectomy
Painful Crisis
Aplastic Crisis
Splenic-sequestration Crisis
Hyper-hemolytic Syndrome
Renal Papillary Necrosis
Salmonella osteomyelitis
Pulmonary Hypertension
Hyposthenuria
2 mins
Marfan Syndrome
Mechanism
Fibrillin-1 Mutation
Symptoms
Autosomal Dominant
Tall
Arachnodactyly
Pectus Excavatum
Hypermobile Joints
Aortic Aneurysm And Dissection
Mitral Valve Prolapse (MVP)
Subluxation of Lens (Superior)
2 mins
Ehlers-Danlos Syndrome Types
Types
Types 1 and 2 - Classical
Type V Collagen Mutation
Joints and Skin
Type 3 - Hypermobility
Most Common
Tenascin X Deficiency
Joint Instability
Type 4 - Vascular
Type III Collagen Mutation
Vascular and Organ Rupture
2 mins
Ehlers-Danlos Syndrome Disease
Pathophysiology
Faulty Collagen Synthesis
Autosomal Dominant or Recessive
Various Severities
Signs and Symptoms
Hypermobile Joints
Hyperextensible Skin
Easy Bruising/Bleeding
Berry (Saccular) Aneurysm
Considerations
Brighton Criteria
2 mins
Tay-Sachs Disease
Pathophysiology
Autosomal Recessive
Hexosaminidase A Deficiency
Increased GM2 Ganglioside
More Common in Ashkenazi Jewish Population
Signs and Symptoms
Cherry Red Spot on Macula
Neurodegeneration
Developmental Delay
Diagnosis
Onion Skin Lysosomes
1 min
Niemann-Pick Disease
Pathophysiology
Autosomal Recessive
Sphingomyelinase Deficiency
More Common in Ashkenazi Jewish Population
Signs and Symptoms
Cherry Red Spot on Macula
Hepatosplenomegaly
Neurodegeneration
Diagnosis
Foam Cells
1 min
Gauchers Disease
Pathophysiology
Autosomal Recessive
Beta Glucocerebrosidase Deficiency
Diagnosis
Lipid-laden Macrophages
Crumpled Tissue Paper
Signs and Symptoms
Osteoporosis
Bone Crises
Aseptic Necrosis of Femur
Erlenmeyer Flask Deformity
Hepatosplenomegaly
Pancytopenia
2 mins
Fabry's Disease
Pathophysiology
X-linked Recessive
Alpha-galactosidase A Deficiency
Increased Ceramide trihexoside
Early Signs and Symptoms
Decreased Sweating (Hypohidrosis)
Angiokeratoma
Episodic Peripheral Neuropathy
Late Signs and Symptoms
Cardiovascular Disease
Renal Failure
1 min
Hurler Syndrome
Pathophysiology
Autosomal Recessive
Mucopolysaccharidoses
Alpha-L-Iduronidase Deficiency
Increased Heparan Sulfate
Increased Dermatan Sulfate
Signs and Symptoms
Hepatosplenomegaly
Developmental Delay
Gargoylism
Corneal Clouding
Airway Obstruction
2 mins
Hunter Syndrome
Pathophysiology
X-linked Recessive
Mucopolysaccharidoses
Iduronate Sulfatase Deficiency
Increased Dermatan Sulfate
Increased Heparan Sulfate
Signs and Symptoms
No Corneal Clouding
Aggressive Behavior
1 min
Krabbe Disease
Pathophysiology
Autosomal Recessive
Galactocerebrosidase Deficiency
Increased Psychosine
Signs and Symptoms
Developmental Delay
Peripheral Neuropathy
Optic Atrophy
Diagnosis
Globoid Cells
1 min
Metachromatic Leukodystrophy
Pathophysiology
Autosomal Recessive
Arylsulfatase A Deficiency
Increased Cerebroside Sulfate
Signs and Symptoms
Demyelination
Ataxia
Dementia
1 min
Von Gierke Disease
Pathophysiology
Autosomal Recessive
Type I Glycogen Storage Disease
Glucose-6-Phosphatase Deficiency
Signs and Symptoms
Increased Glycogen in Liver
Hepatomegaly
Enlarged Kidneys
Severe Fasting Hypoglycemia
Increased Triglycerides
Increased Uric Acid (Gout)
Increased Lactic Acid
Doll-like Facies
Treatment
Continuous Oral Glucose (or Cornstarch)
Avoid Fructose and Galactose
2 mins
Cori Disease
Pathophysiology
Type III Glycogen Storage Disease
Deficiency of Alpha 1, 6 Glucosidase
Debranching Enzyme
Limit-Dextrin Accumulation (In Cytosolic Structures)
Signs and Symptoms
Hypoglycemia
Muscle Weakness
Hypotonia
Stunted Growth
Hepatomegaly
Diagnosis
Normal Blood Lactic Acid Levels
Gluconeogenesis Intact
Increased LFT's
Increased Creatine Kinase (CK/CPK)
Treatment
Continuous Feeding
High Protein Diet
Cornstarch (Uncooked)
4 mins
McArdles Disease
Pathophysiology
Type V Glycogen Storage Disease
Muscle Glycogen Phosphorylase Deficiency
Signs and Symptoms
Increased Glycogen in Muscle
Painful Muscle Cramps
Myoglobinuria
Normal Lactic Acid
Treatment
Vitamin B6
2 mins
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