UWorld Flashcards
Drug classes used to treat BPH
5-alpha reductase inhibs (finasteride) and alpha-adrenergic blockers (prazosin), antimuscarinics
What are the humoral and cell components of Type III hypersensitivity?
Antibody-antigen complexes, complement; neutrophils
E coli virulence factor in bloody diarrhea
Verotoxin (Shiga-like)
What areas is drained by para-aortic nodes?
Testes, ovaries, kidneys, uterus
Cofactors of branched chain alpha-ketoacid dehydrogenase, pyruvate dehydrogenase, alpha-ketoglutarate dehydrog
Thiamine (B1), FAD (B2), NAD (B3), Acetyl CoA (B5), lipoate
Cancer of rectum below dentate metastasizes to
Lungs (enters systemic circ thru internal iliac)
What’s in the carpal tunnel?
Flexor digitorum profundus tendons, flexor digitorum superficialis tendons, flexor pollicis longus tendon, median nerve
anti-centromere
CREST
What rxn is catalyzed by aldose reductase?
Glucose to sorbitol (sorbitol accums in DM)
granular muddy brown casts
ATN
Triceps reflex
C7, C8
Toxic component of lipopolysaccharide
Lipid A
Biceps/brachioradialis reflex
C5, C6
Howell Jolly bodies
Basophilic nuclear remnant in RBCs (should have been removed by spleen). Occurs in sickle cell and post-splenectomy
What enzyme is primarily responsible for NADPH pdtion?
G6PD
painless, spontaneous lower GI bleeding in a child
Meckel diverticulum
What causes a left shift in O2-hemoglobin curve?
Left shift=less O2 to tiss: decr H+ (high pH), decr 2,3 BPG, decr temp
What’s the protein defect with elevated chylomicron and VLDL remnants?
ApoE
Intestinal lipase inhibitor used for weight loss
orlistat
lung cancer assoc with gynecomastia and galactorrhea
large cell carcinoma
cAMP signal pathway
lots pituitary: FSH, LH, ACTH, TSH, CRH, hCG, ADH, MSH, PTH, calcitonin, GHRH, glucagon, histamine, epinephrine
Lymph node that drains lower rectum to anal canal above pectinate
Internal iliac
Infections with catalase positive bugs
Chronic granulomatous disease
Ecthyma gangrenosum
P aurigonsa
Fetus with limb and craniofacial abnormalities, neural tube defects, abortion
MTX
Probenecid MOA
Blocks organic anion transporter in kidney to incr conc in serum (penicillin) or urine (urate)
Where’s glucokinase?
Beta cells of pancreas and liver
CN for carotid sinus reflex
IX in, X out
Neuroleptic malignant syndrome symptoms
Hyperthermia, lead pipe rigidity, autonomic instability, altered mental status
Cell types seen in inflammatory diarrhea or dysentery
Leukoctyes +/- RBCs
Severe intermittent abdominal pain that presents with currant jelly stool
Intussusception
Niacin synth’d from (blank)
tryptophan
Drugs that inhibit NF-kB
Corticosteroids
What areas are drained by internal iliac nodes?
Rectum to anal canal, bladder, vagina, cervix, prostate
Solid, cystic, and calcified mass in brain
Craniopharyngioma
bilious emesis, abdominal pain and failure to pass meconium
Hirschsprung disease
Passes thru foramen magnum
Brainstem, spinal root of CN XI, vertebral arteries
Ketogenic aa’s
Leucine and lysine
Screening test for fetal lung maturity
Lecithin-sphingomyelin ratio (<1.5 predictive of NRDS)
antiandrogen therapy that blocks androgen receptors
flutamide, spironolactone
Function of malonyl-CoA
Fatty acid synthesis and blocks beta oxidation thru inhib of carnitine acyltransferase
CML translocation and mutation
t(9;22); BCR-ABL inhibs apoptosis and promotes tyrosine kinase
waxy casts
ESRD
CN in medulla
IX, X, XI,, XII
Murmurs heard with handgrip
AR, MR, VSD
anti-Smith
specific for SLE
Injury to superior gluteal nerve
Motor: thigh abduction
Pre-existing recipient antibodies react to donor antigen
hyperacute transplant rejection
Type III collagen
reticulin–skin, blood vessels, uterus, fetal tiss, gran tiss
bronchiolitis obliterans, accelerated atherosclerosis, chronic graft nephropathy, vanishing bile duct
chronic transplant rejection
What are the CV defects associated with with Kartagener?
Situs inversus
projection
attributing one’s own feelings to others (thinking someone is angry with you when you’re angry with them)
vitamin deficiency with peripheral neuropathy and cardiac involement
wet beriberi from thiamine deficiency (wet involves heart)
antiandrogen therapy that blocks conversion of testosterone to DHT at peripheral tissues
5-alpha-reductase inhibs eg finasteride
Receptor tyrosine kinase signal pathway
MAP kinase growth factors: insulin, IGF-1, FGF, PDGF, EGF
Horizontal nystagmus, abducens palsy, ataxia, encephalopathy
Wernicke enceph (damage to mamillary bodies)
Marfinoid body habitus plus intellectual disability and thrombosis
Homocystinuria. Cystathione beta synthase mutation leads to buildup and methionine and homocysteine
fatty casts
nephrotic syndrome
Injury to tibial nerve
Sensory: Bottom of foot to lateral edge; Motor: foot inversion, plantar and toe flexion
Traverses foramen ovale
V3
Osteogenesis imperfecta mutation
Type I collagen
Cyanotic congenital heart disease
Tet of Fallot; truncus arteriosus; transposition; tricuspid atresia, total anomalous pulm venous connection
E coli virulence factor in bacteremia and septic shock
Lipopolysaccharide
What antibody protects from Giardia?
IgA
vasculitis of graft vessels with interstitial lymphocytic infiltrate
acute transplant rejection
DNA polymerase with 5’ to 3’ exonucleases activity that excises RNA primers on lagging strand
DNA polymerase I
Meds that can cause hyperkalemia
Nonselective beta-blockers, ACE-I, ARB, K+ sparing diuretics, Cardiac glycosides, NSAIDs
antimitochondrial Abs
PBC
Injury to common peroneal nerve
Sensory loss along lateral shin and dorsum of foot; Motor: Foot eversion, dorsiflexion, toe extension
Malrotation of midgut
Usually asymptomatic but can lead to ischemia and volvulus
Oxidase positive
P aeruginosa, Neisseria, Vibrio, Campylobacter, H pylori, Legionella
Granulomatous inflammation and destruction of intrahepatic, interlobular bile ducts
Primary biliary cirrhosis
Branches of celiac trunk
Common hepatic, splenic, left gastric
Cerebellar ataxia, telangiectasias, incr risk of sinopulmonary infections
Ataxia telangiectasia (mutation in gene responsible for DNA break repair)
Dyslipidemia with premature CAD, tendon xanthomas, xanthelasmas
Familial hypercholesterolemia. Defect in LDL receptor and ApoB
number needed to treat
NNT=1/ARR
Common causes of septic arthritis in sickle cell
S aureus, salmonella
Congenital heart dz, dysmorphic facies, hypocalcemia
DiGeorge
Halflife equation
.7*Vd/Cl
Genitofemoral nerve
Sensory: scrotum/labia majora; medial thigh; Motor: cremaster
Biochem processes exclusively in mito
Fatty acid oxidation, TCA, gluconeogenesis (pyruvate carboxylation)
Causes of osteomyelitis in sickle cell
Staph aureus, Salmonella
Type IV collagen
basement memb, basal lamina, lens
Causes of osteomyelitis in IVDU
Pseudomonas, candida, S aureus
Bite cells and Heinz bodies
G6PD deficiency
Fetus with Ebstein anomaly, nephrogenic diabetes insipidus, hypothyroidism
lithium
Injury to obturator nerve
Sensory loss on inner thigh; Motor: thigh adduction
pyuria without casts
acute cystitis
Upward gaze palsy from damage to..
Superior colliculus
Acidic aa’s
Aspartate, glutamate
Treatment for organophosphate
Atropine (antichol) to counteract cholinesterase inhib
nephrotic syndrome in those with hepatitis
membranous nephropathy
Pudendal nerve
Sensory: perineum and external genitalia; motor: external urethral and anal sphincters
What’s the function of micro RNA?
gene silencing and mRNA degradation
Drugs that prevent IL-2 txn
Cyclosporine and tacrolimus
Traverses foramen rotundum
V2
E coli virulence factor in infant meningitis
K1 capsular polysaccharide
Fetus with nasal hypoplasia, stippled epiphysis
Warfarin
MOA botulinum toxin
cleaves SNARE and blocks exocytosis of ACh NTs
Type II collagen
cartilage
lung cancer assoc with Cushing syndrome, Lambert-Eaton, SIADH
small cell carcinoma
What’s the protein defect with elevated LDL?
LDL receptor, ApoB-100
donor T cells proliferate in immunocompromised host and reject host cells
graft vs host disease
What activates Th1? What inhibs Th1?
Activate: IL-12, IFN-gamma; Inhib: IL-4, 10
Nutrients that can contribute to serotonin syndrome
Tryptophan, omega 3 fatty acids
Hypoketotic hypoglycemia
Failure of fatty acid degradation from lack of carnitine or acyl-CoA dehydrog
Cell types seen in watery diarrhea
No inflammatory cells, just mucus and sloughed epithelial cells. Enterotoxin which is noninflamm