General 3 Flashcards
describe a hyperacute graft rejections
antibody mediated type II HSN reaction
preformed IgG ab in the recipient that are directed against the host
describe the different types of pleural effusions and thier mechanics
in decompensated heart failure, what happens
hydrostatic pressure increases and lymphatic flow increases to compensat,e, but can’t keep up so you get fluid backed up into lungs
vascular permability doens’t change neither does oncotic pressure
which step in the CAC is thiamine dependent?
aKG to sCOa
aKG dehydrogenase complex is thiamine dependent
a KeG depends on THIAMINE (like an alcoholic depends on a KEG and needs THIAMINE)
in newborns, juandice is commone becasue of what?
increased bilirubin production and enterhoepatic circulation but decreased conjugations
restrictive cardiomyopathy due to amyloid deposition can cause what manifestations?
dialted left atrium from blow back of blood
thickened left ventricle and impaired relaxation
Turner Moasicism (XO/XX) is a result of what time of mosaicism?
somatic mosaicism
absence by itself gets treated with
absense with tonic clonic gets treated with?
ethosuxaminde
valporic acid
bicornate uterus, messed up tubes and renal ageneisis sounds like
falure of lateral fusion of the paramesonephros
What are the hormone levels in kleinfelters?
increased LH and FSH
increased estradiol (loss of feedback inhibtion)
low testosterone
what is the most common risk factor for calcium stones in adults?
hypercalciuria (with normal serum ca)
a bacterial infection is more likely when accompanied by pus and lymphadenopathy. what is causing the LAD
increased germinal centerrs (not paracortical)
bronchophany is heard when?
can you feel crepitus with a PTX?
over more solid consolidations (not PTX)
yes
what is the cause of sick sinus syndrome?
age related change in the right atrial wall at the SA node,
sinus pause and then a junctional beat with dropped p wave on eckg
nitrates effect which vessel?
vens and cause venodilations
in Conn syndrome (adrenal cortical adenoma), renin will be
in secondary hyperaldosteronism, renin will be
low
high
know testosterone levels with age
total andd free decrease
SHBG increases
what type of hernia is assox with Downs?
umbilical hernia, protursion worse with crying
caused by incomplete closure of umbilical ring/abdominal musculature
what type of bacteria can cause nonpurulent cellulitis?
purlent cellulitis is caused by
beta hemolytic streptococci (includes strep pyogenes)
staph aurues
randomizing groups causes what?
causes them to be balanced and fairly similar in qualities
what should be expected in a young person with viral prodrome and now s/s of heart dailrue?
decompensated dilated cardiomyopathy from viral myocarditiis
What are the s/s of s typhi
fever (woth pulse/fever dissoz)
rose spots, abominal pain, HSM, Gi bleed, perforation
get from food/water in developing country
replciates in macropahges (not the same as samonella )
nitrates do what to LV?
reduce LV end diastolic pressure, reduce preload
increase peripheral vascular capacitance
decreases SVR
femoral nck fractures are at risk of osteonecorsis due to what vessel?
medail femoral circumflex
what drygs should be avoided in hypertrophic cardiomyopathy
there is an assox LVOT so any drug that decreases preload or SVR should be avoided
incldues dihidyro CCB, nitro/nitrates, and ACEi as well as diuretics
will shingles (VZV) have intranuclear inclusions
yes, Tzank
a1 antitrypsin def is asociaed with what acinar emphysema
PANacinar becaise A1 affects the whole lung
centroacinar assox with Cmoking (smoking)
what muscle attaches to the greater trochanter?
glut medi
what is more common in a complete mole, 46XX or 46Xy
46XX is more common in complete mole
pancytopenia with a dry tap think
its a TRAP
hairry cell leukemia
lymphocytes with hair like (cytoplasmic) prkoectinos
what will be seen on hist with rheumatic fever?
aschokoff
antichosw bodies
what increases in the amniotic fluid as gestational age increases?
phosphytidlcholine-used to make surfactant
sphingomyelin levels stay fairly constant
what is the mutation in hypertrophic cardiomyopathy?
what is the mutation in idiopathic dilated cardiomyopathy?
beta myosin heavy chain or miosin binding chain C
TTN gene, titin
how does epinephrine help prevent mast cell histamine release ?
EPi binds to mast cells and inhibits degranulation and histamine release
add to last minute list
what is the treatement for recurrent HSV?
daily valcyclovir
what does a tzank test look like in HSV?
what type of cells are synpotphysin positive?
neurons, neuroectorderm and neuroendocrine
low fecal elastase will be seen when?
in pancreatic insuffiencicny/chronic oancreaitis
associated with exocrine pancreatic function
what common complication of subarachnoid hemorrhage occurs 3-12 days later and via what mechanism?
cerebral vascular vasospasm leading to ischemia and focal deficits
prevent with CCB increases vasodilation, reduces amount of ischemia and vsospasom
WPW conduction can be described as
AV conduction bypassing the AV node
or AV reentrant tachycardia type of SVT
what are the three Ds of botulism?
diplopia, dysphagia, dysphonia
alters the CMAP
9electrical activity of the muscles)
HBV can cause what in the liver
hepatocellular carcinoma (large yellowy lesions)
collagen binds to integrin via what connector?
fibronectin
what are some common withdrawal sx of amphetamines?
hyperphagia
hypersomnia
depression
countertransferance is what?
consists of a docs unconcious or concious reaction towrad a patient based on based personal experiences
what is the smear of a macrocytic anemia look like
due to imapaired dna synthesis
what is the function of TPO?
catalyzies the oxidation of iodine
iodination of thyroglobulin
coupling reactino between two iodinized tyrosineresidues
what nerve follows the spermatic cord and can be damaged during inguinal reapir leading to allodynia, burning and pain in the genitals and medial thigh?
ilioingional
differentiate HCM and normal physiologic adaptation to exercise
adaptation: eccentric hypertrophy wiht enlarged cavity and small amount of concentric hypertrophy with increased LV wall thicknes
HCM: concentric thickness withd decreased cavity space and poor blood supply
idk this
if someone has a mi and now they are bradycardic, what to do?
atropine to inccrease vagal tone and HR
in a PTX with low BP, is it becasue of pressure on the heart or pressure on the IVC?
pressure on the IVC decreasing return to the hrat
postprandial epigastric pain and food averson and weight loss is consistent with what in the setting of atherosclerosis?
chronic mesenteric ischeima
what is pierre robin sequence?
know trisomy 13
know the EMs
in hypovolemic states, what are the levels of these hormones:
vassopresin
NE
angII
endothelin 1
all increased
know henoch shonlein pupura
what are the s.s of hydrocephalus?
Hep D can’t infect someone unless Hep B is there to do what?
coat the viral protein (like a trojan horse)
what kind of vaccine is the pnenuomoccaly?
polysacharide vacine (23)
or a conjugate vacine
what horome is eelvated in narcolepsy?
hypocretin 1 and 2 (orexin a and b)
how does prazole’s work?
what are the two biggest risks for adenocarcinoma?
obesity and gerd
tips on AKI
low urine Na indicates to low FeNa
silicosis makes someome more at risk of TB ebcasuse of what?
impaired macrophage function
what classes of diabetes drugs causes hypoglymcea?
insulin secretagogues
- meglitindines
- sulfonurea
b12 def has elevated levels of what?
methymalonic acid and homocysteine
remember struvite/staghorn stones from protteus orklebsielia will have what pH in the urine?
high pH (like 8)
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wat is the timeline post MI for complications and what are they?
increasing estorgen increases waht thyroid homrone?
TBG which decreases free T4 and T3
this causes a decrease in TSH which in turns raises t4 and t3 again
prostacyclin (inhibits or excites) platelet aggregation
inhibits
th1 vs th2
left and right gonadal artery come off of what
aorta
only the veins do left renal for left gonadal
high altitude causes
resp alkalosis
renal H excretion decreases
bone mets
putamen hemoorhage is likely form what vessels?
lenticulostriate
what kind of regurgitation can occur after pacemaker placement
tricuspid valve regurg leading to right heart failure if it is severe enough
apiration pneumonititis (of gastric acid) leads to
aspiration pneumonia (of oropharygneal bacteria)
really acute onset, within hours, damage to alveoli
leads to weeks of pneumonia symptoms, foul smelling sputum, etc
febrile neutropenia occurs when neutrophils are less than what?
<500
more suscpetible to aspergillus
patients with severe emphysema will have what acid base abnormality?
chronic respiratry acidosus with metabolic compensation
auer rods in APML have what chemical in them?
myeloperoxidase
isotype switching occurs where
in the germinal centers
in those with RA, rapid ETT intubmation can cause what problem?
cervical subluxation :(
cutaneous neurofibromas are derived from which cell?
neural crest (made up of mostly schwann cells)
what does a southwestern blot do?
substance detected: DNA binding protein
type of probe: dsDNA
(c-Jun and c-Fos are nucelar transcription factors that bind to DNA)
what protein assox with cr. 21 and down’s syndrome is thought to speed up early onset demenita?
APP (amylpoid precurosr protein)
what is the initial management for transposition of the great arteries?
rostaglandin infusion to maintain PDA
atrial spetostomy to enlarge/maintain PFO
many african forms of malaria are chloriquine resistant. What is teh treatment
also what do the trophozites look like in ring form?
atorvoqoune-progunil
or artemisins
among e coli strains that cause neonatal meningitis, what is the likely virulence facotir?
K1 capsular antigen
lung infections with crytococcus neoformans is usually
in those with hiv, what other sx can be seen?
asymptomatic
meningoencphalitis and may have symptomatic lung infection
know the abx resistance mecahnisms
in status epilepticus, after the loreazepam, what is given?
what is the moa?
phenytoin or fosphenytoin
inhibits Na channels
MRSA specs
grows on oxacillin agar and has MECA gene which codes for PBP2a which has a low affinity for beta lactams, there fore oxaccilin, methicilin, and the cephalosporins, are NOT effective
normally, Low BP would mean high vasopressin to try to compensate, but in sepsis???
vasopressin is low
AAA is caused by
chronic transumural inflammation
(cystic medial necrosis-marfan’s)
(focal initmal tear-aortic dissection)
muscarinic agonists will incresaes release of what?
NO
in vWF def, what are plt levels, PT and PTT?
all normal, but PTT can be prolonged
in graft versus host, is it the graft’s T cells or B cells that cause the probel,
T cells
testes, glans penis and cutaneous portion of posterior calf drain into
scrote drains into
paraaortic nodes
superficial inguinal
neutropenic fever increases the risk of what infections
infection from your own flroa
PAH pathogenesis
smooth muscle hyperplasia in the vascularture