uworld factoids Flashcards
skeletal manifestation of primary hyperparathyroidism
osteitis fibrosa cystica
brown pigment stones - cause
due to infections of the biliary tract - bacteria release beta-glucuronidase that increases the amount of unconjugated bilirubin in bile
succinylcholine can cause significant release of what electrolyte
potassium (can lead to arryhtmias)
consequence of biliary hypomotility
biliary sludge
congenital toxoplasmosis transmission
in utero
medullary carcinoma of the thyroid - histology
amyloid formed by calcitonin secreted from neoplastic parafollicular C cells
single palmar crease
trisomy 21
local defense against candida is carried out by
T cells
systemic infection of candida is prevented by
neutrophils
imperforate anus occurs with what other abnormalities
urinary tract defects
direct inguinal hernia occurs due to breakdown of what?
transversalis fascia
baroreceptors transmit their information to what part of the brain?
solitary nucleus of the medulla
hypertension race risk
black>white>asian
what causes abdominal aortic aneuryms?
atherosclerosis
what causes thoracic aortic aneurysm?
tertiary syphilis, marfans
tertiary sysphilis causes thoracic abdominal aneurysm how
endarteritis of vasa vasorum
how does HTN cause aortic dissection
hypertrophy of vasa vasorum
markedly different bp in both arms
aortic dissection
hemophilia B inheritance pattern
X linked recessive
huntingtons inheritance pattern
autosomal dominant
classical galactosemia inheritance pattern
autosomal recessive
lesch nyhan inheritance pattern
x linked recessive
LHON inheritance
mitochondrial
top 1/3 of ureters are supplied by what artery?
renal artery
whats the most common cardiomyopathy
dilated cardiomyopathy
what type of mutation is associated with dilated cardiomyopathy?
autosomal dominant
causes of dilated cardiomyopathy
ABCCCD, HSP
alcohol abuse beri beri (wet) chagas cocaine coxsackie a/b myocarditis doxorubicin hemochromotosis sarcoidosis pregnancy (late)
type of hypertrophy seen in dilated cardiomypoathy
eccentric
sarcomeres added in series
what extra heart sound is heard with dilated cardiomyopathy?
S3
what extra heart sound is heard with hypertrophic cardiomoypoathy?
s4
most common cause of death in freidrich’s ataxia
HOCM
beta-myosin heavy chain mutation
hocm
classic histology finding in hOCM
myofibrillar disarray and fibrosis
low voltage EKG with diminshed QRS amplitude
restrictive cardiomyopathy
most common cause of bacterial endocarditis in IVDA
staph aureus (less common, psuedomonas, candida)
bacterial endocarditis associated with prosthetic valves
staph epidermidis
bacterial endocarditis associated with people with underlying colorectal carcinoma
strep bovis
most common overall bacterial cause for bacterial endocarditis
strep viridans
culture negative bacterial endocarditis organisms
HACEK haemophilus actinobacillus cardiobacterium eikenella kingella
PSGN can occur after
strep pharyngitis OR strep impetigo
rheumatic fever can occur after
strep pharyngitis ONLY
mechanism of acute rheumatic fever?
molecular mimicry between bacterial m proteins and proteins found in human tissue
histology of myocarditis in acute rheumatic fever
aschoff bodies = giant cells with fibrinoid material with anitschkow cells inside (slender wavy nuclei)
aschoff bodies = giant cells with fibrinoid material with anitschkow cells inside (slender wavy nuclei)
acute rheumatic fever
fish mouth appearance of valves
chronic rheumatic fever
heart problems in acute vs. chronic rheumatic fever
acute = regurgitation chronic = stenosis (fusion of commissures)
hyperdynamic circulation occurs in what abnormality
aortic regurgitation
whats pulsus paradoxus
decrease of BP by > 10 mmhg upon inspiration
seen in cardiac tamponade
becks triad
1) hypotension
2) distant heart sounds
3) jvd
cardiac tamponade
most common primary cardiac tumor in children
rhabdomyoma (tuberous sclerosis)
seen in venricle
most common location of cardiac myxoma
atria- usually LA
Whats the most common cardiac tumor
metastasis, usually from: breast, lung, melanoma, lymphoma
diastolic tumor plop sound
cardiac myxoma
cardiac tumor with gelatinous appearance and abundant ground tissue on histology
myxoma
difference between bacillary angiomatosis and kaposi sarcoma
bacillary = neutrophillic infiltrate kaposi = lymphocytic infiltratie
pvc exposure predisposes to
angiosarcoma
arsenic exposure predisposes to
angiosarcoma
radiation cancer treatment MOA
double stranded DNA breaks and formation of oxygen free radicals
anaphylactic response to transfused blood products
selective immunoglobulin deficiency
where is the area postrema of the brain
dorsal medulla (midbrain) below pons and in the back of the brainstem
postauricular lymphadenopathy
rubella (togavirus) - german measles
persistent lymphedema with chronic dilatation of lymphatic channels predisposes to what cancer
lymphangiosarcoma
cancer that may arise 10 years after radical mastectomy with axillary lymph node dissection with breast cancer
lymphangiosarcoma
cardiac tissue conduction fastest to slowest
Purkinje > atrial > ventricular > AV node
what causes increase in insulin resistance in overweight individuals?
FFA and serum triglycerides