Ace Your First Aid for the USMLE Step 1 (2023) Classes and Exams with Picmonic: #1 Visual Mnemonic Study Tool for Medicine (MD/DO) Students
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First Aid for the USMLE Step 1 (2023) | Medicine (MD/DO) School Study Aid
Von Hippel-Lindau Disease
- Pathophysiology
- Chromosome 3
- Presentation
- Hemangioblastomas
- Medulla, Retina, Cerebellum
- Cysts
- Kidney, Liver, Pancreas
- Develop Bilateral Renal Carcinomas
- Pheochromocytomas
2 mins
Renal Cell Carcinoma Characteristics
- Pathophysiology
- Chromosome 3
- VHL Gene
- Proximal Convoluted Tubule
- Risk Factors
- Smoking
- Nephrolithiasis
- Chronic Analgesic Use
- Subtypes
- Clear Cell
- Papillary
- Chromophobic
2 mins
Autosomal Dominant Polycystic Kidney Disease
- Characteristics
- Autosomal Dominant
- Mutations in PKD1/2
- Cystic Enlargement of Renal Tubules
- Clinical Features
- Chronic Kidney Disease
- Hypertension
- Mitral Valve Prolapse
- Hepatic Cysts
- Berry (Saccular) Aneurysms
3 mins
Achondroplasia
- Mechanism
- Autosomal Dominant
- Advanced Paternal Age
- Most Common Cause of Dwarfism
- Mutation of FGFR3 (Fibroblast Growth Factor Receptor 3)
- Defective Endochondral Ossification
- Symptoms
- Delayed Motor Milestones
- Shortened Limbs with Normal Axial Skeleton Size
- May Develop Hydrocephalus
- Symptoms of Spinal Stenosis
- Normal Life Span and Fertility
2 mins
Huntington's Disease
- Pathophysiology
- Autosomal Dominant
- Trinucleotide Repeat
- CAG Repeats
- Chromosome 4
- Anticipation
- Caudate
- Decrease of ACh
- Decrease of GABA
- Signs and Symptoms
- Chorea
- Dementia
- Depression
- Glutamate Toxicity
- Neuronal Death via NMDA Binding
3 mins
Familial Adenomatous Polyposis
- Pathophysiology
- Autosomal Dominant
- Mutation in Chromosome 5
- APC Gene Mutation
- Overexpression of Beta-catenin
- Two-Hit Hypothesis
- Clinical Findings
- Change in Bowel Habits
- Colonic Polyps
- Screening
- Colonoscopy
- Management
- Prophylactic Surgery
- Considerations
- Progresses to Colorectal Carcinoma
3 mins
Hemochromatosis Pathophysiology
- Pathophysiology
- Hemosiderin Deposition
- Autosomal Recessive
- HLA-A3
- Secondary to Transfusion Therapy
- Increase Iron
- Increase Ferritin
- Increased Transferrin Saturation
2 mins
Williams Syndrome
- Pathophysiology
- Microdeletion Of Long Arm Of Chromosome 7
- Elastin Gene
- Signs and Symptoms
- Elfin Facies
- Intellectual Disability
- Extreme Friendliness with Strangers
- Well Developed Verbal Skills
- Cardiovascular Problems
- Hypercalcemia
- Increased Sensitivity To Vitamin D
2 mins
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
Friedreich's Ataxia
- Trinucleotide Repeat
- GAA Repeat
- Frataxin
- Mitochondrial Dysfunction
- Autosomal Recessive
- Hammertoes
- High Arches
- Kyphoscoliosis
- Lateral Corticospinal Tract
- Posterior Column
- Spinocerebellar Tract
- Type I Diabetes Mellitus
- Hypertrophic Cardiomyopathy
1 min
Tuberous Sclerosis
- Characteristics
- Autosomal Dominant
- Signs and Symptoms
- Hamartomas in CNS and Skin
- Phakoma
- Subependymal Giant Cell Astrocytoma
- Seizures
- Intellectual Disability (Mental Retardation)
- Adenoma Sebaceum
- Shagreen Patch
- Ash-leaf Spots
- Renal Angiomyolipoma
- Cardiac Rhabdomyoma
2 mins
Wilms' Tumor (Nephroblastoma)
- Cause
- Malignant Renal Tumor
- Assessment
- Abdominal Mass
- Hematuria
- Fever
- Hypertension
- Interventions
- Nephrectomy
- Chemotherapy
- Radiation
- Considerations
- Do Not Palpate Abdomen
- Children Under 5 Years Old
2 mins
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
Beta Thalassemia
- Mechanism
- Microcytic, Hypochromic Anemia
- Mediterranean Populations
- Decreased Beta-Globin
- Beta-Thalassemia Minor
- Increased HbA2
- No Intervention
- Beta-thalassemia Major
- Blood Transfusions
- Hemochromatosis
- Crew-cut on Skull X-Ray
- Diagnosis
- Electrophoresis
2 mins
MEN 1 (Multiple Endocrine Neoplasia)
- Pathophysiology
- Autosomal Dominant
- Menin Mutation (Tumor Suppression Gene)
- Chromosome 11
- Signs and Symptoms
- Pancreatic Endocrine Tumors
- Pituitary Tumors
- Parathyroid Adenomas
2 mins
Patau Syndrome
- Pathophysiology
- Trisomy 13
- Signs and Symptoms
- Severe Intellectual Disability
- Microcephaly
- Holoprosencephaly
- Microphthalmia
- Polydactyly
- Cleft Lip/Cleft Palate
- Rocker Bottom Feet
- Omphalocele
- Cystic Kidneys
- Ventricular Septal Defect (VSD)
2 mins
Wilson's Disease Pathophysiology
- Autosomal Recessive
- Mutation in ATP7B gene
- Chromosome 13
- Decrease in Ceruloplasmin
- Inadequate copper excretion
- Liver
- Brain
- Kidney
- Cornea
- Joints
- Treat with Penicillamine
2 mins
Retinoblastoma
- Characteristics
- Loss of Heterozygosity
- Chromosome 13
- Children
- Presentation
- Leukocoria
- Strabismus
- Vision Loss
- Association
- Osteosarcoma
- Diagnosis
- Genetic Testing
- Management
- Cryotherapy
- Photocoagulation
- Chemotherapy or Radiation
- Surgery
3 mins
Prader-Willi Syndrome
- Mechanism
- Maternal Imprinting
- Deletion of Chromosome 15q (Paternal Deletion)
- Signs And Symptoms
- Hyperphagia
- Truncal Obesity
- Hypogonadism
- Undescended Testicles (Cryptorchidism)
- Intellectual Disability (Mental Retardation)
- Neonatal Hypotonia (Floppy Baby)
- Almond Shaped Eyes
- Narrow Bifrontal Diameter
- Thin Upper Lip
3 mins
Angelman's Syndrome
- Mechanism
- Paternal Imprinting
- Deletion of Chromosome 15q (Maternal Deletion)
- Signs And Symptoms
- Happy Puppet Syndrome
- Inappropriate Laughter
- Ataxia
- Severe Intellectual Disability (Mental Retardation)
- Seizure
- Abnormal EEG
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
Neurofibromatosis Type 1
- Pathophysiology
- Autosomal Dominant
- Chromosome 17
- Signs and Symptoms
- Neurofibromas
- Optic Glioma
- Lisch Nodules
- Hamartomas
- Cafe Au Lait Spots
- Scoliosis
- Pheochromocytoma
4 mins
Li-Fraumeni Syndrome
- Pathophysiology
- Autosomal Dominant
- TP53 Mutation
- Loss of Heterozygosity
- Clinical Features
- Osteosarcoma
- Breast Cancer
- Brain Tumors
- Leukemia/Lymphoma
- Adrenocortical Carcinoma
- Management
- Supportive Care
3 mins
Edwards Syndrome
- Pathophysiology
- Trisomy 18
- Signs and Symptoms
- Intellectual Disability (Mental Retardation)
- Rocker Bottom Feet
- Ventricular Septal Defect (VSD)
- Clenched Hands
- Overlapping Fingers
- Low-Set Ears
- Micrognathia
- Prominent Occiput
- Omphalocele
- Meckel's Diverticulum
- Horseshoe Kidney
- Malrotation of Intestines
3 mins
Down Syndrome
- Pathophysiology
- Trisomy 21
- Meiotic Nondisjunction
- Signs and Symptoms
- Intellectual Disability (Mental Retardation)
- Single palmar crease
- Flat Facies
- Duodenal Atresia
- Hirschsprung's Disease
- Septum Primum Type ASD
- Endocardial Cushion Defects
- Prominent Epicanthal Folds
- Increased Risk of Acute Lymphoblastic Leukemia
- Alzheimer's Disease
3 mins
Neurofibromatosis Type 2
- Pathophysiology
- Autosomal-Dominant
- Chromosome 22
- Signs and Symptoms
- Vestibular Schwannoma
- Meningioma
- Ependymoma
- Cafe Au Lait Spots
- Cataracts
2 mins
Thymic Aplasia (DiGeorge Syndrome)
- Pathophysiology
- DiGeorge Syndrome
- 22q11 Deletion
- Failure to Develop Third and Fourth Pharyngeal Pouches
- Signs and Symptoms
- Undeveloped Thymus
- T Cell Deficiency
- Recurrent Viral and Fungal Infections
- Undeveloped Parathyroids
- Hypocalcemia
- Tetany
- Aortic Defects
- Congenital Heart Defects
- Diagnosis
- Absent Thymic Shadow on CXR
2 mins
Fragile X
- Pathophysiology
- Trinucleotide Repeat
- CGG Repeats
- FMR1 Gene
- X-linked Dominant
- Signs and Symptoms
- Developmental Delay
- Autism
- Large Ears
- Large Jaw
- Long Face
- Macroorchidism
2 mins
Bruton's Agammaglobulinemia
- Pathophysiology
- X-linked Recessive
- Defective Bruton Tyrosine Kinase
- Blocks B Cell Maturation
- Signs & Symptoms
- Decreased Immunoglobulins of All Classes
- Bacterial Infections After Six Months
- Maternal IgG Protects Before Six Months
2 mins
Klinefelter's Syndrome
- Pathophysiology
- Male (XXY)
- Signs and Symptoms
- Eunuchoid Body Shape
- Gynecomastia and Female Hair Distribution
- Testicular Atrophy
- Dysgenesis of Seminiferous Tubules
- Possible Developmental Delay
- Hypogonadism
- Decreased Inhibin B
- Increased FSH
- Abnormal Leydig Cell Function
- Decreased Testosterone
- Increased LH
- Increased Estrogen
- Barr body (inactivated X chromosome)
6 mins
Cri Du Chat
- Pathophysiology
- Congenital Deletion of Short Arm of Chromosome 5p
- Signs and Symptoms
- High Pitched Cry/Mewing
- Microcephaly
- Hypotonia
- Difficulty Sucking and Swallowing
- Epicanthal Folds
- Widely Spaced Eyes
- Wide & Flat Nasal Bridge
- High Arched Palate
- Intellectual Disability
- Cardiac Abnormalities
3 mins
