Last minute things I struggle with Flashcards
Leads that show anterior wall MI
V1 - V4, V5
Leads that show inferior wall MI
II, III, aVF
Leads that show lateral wall MI
aVL, V5, V6
Leads that show posterior wall MI
need a right precordial lead, V4
What artery supplies the anterior wall of heart?
Left anterior descending (LAD)
What artery supplies the lateral wall of the heart?
left circumflex artery
What artery supplies the inferior wall of the heart?
right coronary artery
What artery supplies the posterior wall of the heart?
posterior descending artery
WAGR complex
Wilms tumor, aniridia, genitourinary malformations, retardation
Different factors that are deficient in Hemophilia A, B, and C
A - Factor 8
B - Factor 9
C - Factor 11
results in increased PTT, hemarthroses, easy bruising, bleeding after trauma
Factors measured by PT, factors measured by PTT
PT - I, II, V, VII, X (common and extrinsic)
PTT - XII, XI, IX, VIII, X, V, II (common and intrinsic) –> all factors except 7 and 13
Effect on PT and PTT with Vit K def.
increase both
Seizures, intellectual disability, angiofibromas (triad)
-also ash leaf spots, hamartomas, cardiac rhabdomyoma, mitral regurgitation
Tuberous sclerosis
-increased risk for subependymal astrocytomas and ungual fibromas
Things that cause hemolytic anemia in pts with G6PD def.
“Spleen Purges Nasty Inclusions From Damaged Cells”
-Sulfonamides, Primaquine, Nitrofurantoin, Isoniazid, Fava beans, Dapsone, Chloroquine
Classic triad of reactive arthritis
urethritis, conjunctivitis, arthritis (usually following diarrheal infection) – not the same as septic arthritis
- is a seronegative spondylarthropathy
- caused by shigella, salmonella, yersina, campylobacter, or chlamydia
1 cause of septic arthritis
neisseria gonorrhoeae
What effect does leptin generated by adipocytes have on the hypothalamus?
stimulates ventromedial area and inhibits lateral area –> satiety
Councilman bodies
viral hepatitis
Dementia + eosinophilic inclusions in neurons
Lewy body dementia
Tumors associated with Tuberous sclerosis
cardiac rhabdomyosarcoma, renal angiomyolipoma
Recurrent sinusitis, situs inversus, bronchiectasis
Kartagener syndrome - defect in dynein arm of cilia, can see infertility too
Different types of tissue composed of the four types of collagen
Type 1 - bone, skin, tendon, dentin, cornea (strong)
Type 2 - cartilage, vitreous body, nucleus pulposus (slippery)
Type 3 - blood vessels, uterus, fetal tissue, reticular fibers, scars (stretchy)
Type 4 - basement membrane (BM)
What amino acids are high in collagen?
proline, glycine, hydroxyproline
Not enough production of Type 1 collagen, autosomal dominant
Osteogenesis imperfecta
-bowed legs, blue sclera, multiple fractures, hearing loss, tooth abnormalities
Problem crosslinking collagen, defect in Type I and V collagen
Ehlers-Danlos - hemorrhages, easy bruising, hyperextensible joints, arterial rupture, berry aneurysms
Defect in fibrillin, which forms sheath around elastin
Marfan syndrome
Berry aneursysms + cystic kidney and liver
Autosomal dominant polycystic kidney disease
Mutation in fibroblast growth factor receptor 3
Achondroplasia
Default if you don’t know inheritance pattern
Dominant - issue in structural gene
Recessive - issue in enzyme activity
Cystic medial necrosis of aorta –> aortic incompetence + floppy mitral valve + aortic regurgitation (midsystolic click)
Marfan syndrome
-can see subluxation of lens upward and temporally
Cafe-au-lait spots, cutaneous neurofibromas, optic gliomas, pheochromocytomas, pigmented iris hamartomas
NFM 1 (on chromosome 17 - called von Recklinghausen disease)
Bilateral acoustic schwannomas, juvenile cataracts, meningiomas, ependyomomas
NFM 2
Seizures + intellectual disability + ash-leaf spots
Tuberous sclerosis
Different tumors with different MEN syndromes
MEN 1 - parathyroid adenoma, pituitary adenoma, pancreatic tumors
MEN 2A - medullary thyroid cancer, pheocromocytoma, parathyroid adenomas
MEN 2B - medullary thyroid cancer, pheocromocytoma, mucosal neuromas
Decrease alpha-fetoprotein and estriol, increase inhibin A and beta-HCG on quad screen; genetic defect due to meiotic nondisjunction
Down syndrome
Rocker bottom feet, micrognathia, prominent occiput, intellectual disability, decrease in all quad screen levels
Trisomy 18 - Edward syndrome (election age = 18)
Rocker bottom feet, microcephaly, cleft lip/palate, holoprosencephaly, polydactyly, decrease in beta-HCG and PAPP-A
Trisomy 13 - Patau Syndrome (puberty = 13)
Microencephaly, intellectual disability, high-pitched crying/mewing (like a kitten), epicanthal folds, VSD
Cri du chat - due to microdeletion of short arm of chromosome 5 (5p-)
Elfin facies, hypercalcemia, extreme friendliness with strangers, intellectual disability
Williams syndrome (think about Will ferrel in Elf - nice and friendly + elfin face) - due to deletion of long arm of chromosome 7
Increase AFP on quad screen
abdominal wall defect, neural tube defect, multiple gestations, incorrect dating
Defects seen in DiGeorge Syndrome
CATCH 22 - cleft palate, abnormal facies, thymic aplasia (recurrent infections), cardiac defects, hypocalcemia (missing parathyroids)
-due to 22q11 deletion and defect in development of 3rd and 4th branchial/pharyngeal pouches
Cause of pseudotumor cerebri
Vit A OD – increase ICP
What transports nitrogen in the body?
alanine (to liver), glutamate (to urea cycle)
Musty body odor, intellectual disability, growth retardation, seizures, fair skin, eczema
Defect in phenylalanine hydroxylase (aromatic acid metabolism) - PKU
tx = increase tyrosine (becomes essential) + increase BH4 supplement (cofactor)
Defect in tyrosinase
Albinism
Bugs that don’t gram stain well
Mycoplasma, Mycobacteria, Rickettsia, Treponema, Legionella, Chlamydia
Encapsulated bacteria
“Even Some Pretty Nasty Killers Have Shiny Bodies” - E. coli, Salmonella, Pseudomonas, Neisseria, Klebsiella, Hib, Strep pneumo, Group B strep (step agalactiae)
Bacteria that make spores
Bacillus, Clostridium (need to autoclave to kill spores - 121 C for 15 min with steam)
Jones criteria for rheumatic fever
J - joints (polyarteritis) O - heart shape (pancarditis) N - nodules E - erythema marginatum (ring rash that gets bigger) S - syndenham chorea