General 4 Flashcards
acute tubular necrosis will have what type of casts?
can be caused by
muddy casts
inraoperative iscemia
what does histoplasma look like inside macrphage?
what is the MOA of patiromer?
echanges Ca for K in the intestine to increase K loss
when are delta waves seen on EEG?
N3 during night terrors
what part of vit D metabolism does the sun do?
7-decholesterol to D3
how does an AV fistula change the PV loop?
which is elevated in hemophilia a and b, PT or PTT?
PTT is proloned
what is the workup for giant cell arteritis?
ESR and temporal a biopsy
what happens when you start a pt with bilateral renal stenosis on ace inhibitiros?
pts with BRAS are a dependent on AgII to cocnstrict the efferent renal artery so that they can maintain GFR
when ACEi are started, RBF decreases, GFR decreases and FF decreases and can lead to renal failure, tho most pts can toelratee
damage to the dominant parietal lobe/angular gyrus manifests as what?
if leptin R is knocked out, what will be high?
BMI and leptin levels, because no receptors to modualte the acticity
blanching erythema in the minutes following a superifical burn are due to what?
mast cells releasing histamine
know it bbbbb
diastolic heart failure can be caused by
decreased ventricular compliance and is characterized by normal LV EF, normal LVEDV and icnreased LV ED P
caused by hypertension, obesity and infiltratigve disroders like transthyretin-induced amyloidosuis, sarcoidosis
isoniazid must be processed by what in order for the drug to be activated
mycobacterial catalase peroxidase
left ventricular gallops, etierh S3 or S4 are best heard when
at the end of expiration at the cardiac apex
factor Xa inhbitors *Xaban* MOA
inhibit Xa thus blocking prothrombin to thrombin (II-IIA)
a midsystolic click probably indicates what?
mitral valve prolapse
snapping of the cordae tendidae
usually a defect in CT like in Marfans. ED, or OI
all of the chronic myeloproliferative disorders (PV, ET, PMF) except CML, have what receptor defect?
JAK2
atopic dermatitis
LOF in fillagrin leading to increased water loss and inflammation
causes dry skin and pruritis and can appear lichenified
foamy macrophages with acid fast bacilli
MAC
etoposide inhibits which topoismoerase?
topoisomerase II
what are teh effects of dobutamine?
B1 agonist
positive iontropy and cronotropy
increased CO
mild vasodialtion
increased O2 consumption (not ideal)
G6PD def is what kind of inheritance?
XL recessive
what is heteroplasmnu
mixing of multiple genetics
like females in mtDNA mutations aren’t as effected as males
colitis assox cancer is from what kind of mutation?
early p53
late APC
or multifocal
Wernicke’s aphasia is from a vessel damage wher?
MCA vessel damage
what part of the bladder is more likely to rupture in trauma?
bladder dome
LPS on g- bacgteria like e coli bind to what?
TLRs
high pulses in UE and low pulses in LE means
what is a compensation for this?
coarctaion of the aorta
collateral circulation leadnig to a continuous murmur in the back
HIV transmembrane protiens
retroperitoneal hematoma can look like
these can compress the femoral n leading to anterior thigh loss of sensation
highly proliferative cells like___
are more prone to
intestinal crypt cells
ionizing radiation becayse they don’t have as much time to repair the dna
how does a hyperthyroid state lead to bone loss?
titration curvee for substances in the kidney
glucose is fully reabsorbed in the PCT until it reaches it max cncetration at 200. once there, it will be excreted
what are some common clinical manifestations of hemocrhomatosis
arthritis
what does pcp look like with methamene silver stian?
what two factors likely have a strong role in development of LV hypertropyhy?
endothelin and AGII due to HTN
if the TIA has resolved, do you give TPA?
NO
primary therapy is secondary prevention with antiplatlet drugs like ASAs or clopidogrel and statins
JAK is a ___ tyrosine kinase
cytoplasmic
dermatomyositis can be a sign of what?
underlyinh malignancy, including ovarian adenocarcinoma
in cirrhosis leading to ascites, portal hypertension leads to splanich vasodilation leading to activation of
what drug to give?
RAAS causing vasoconstriction from ANG and fluid and Na retenion from aldosterone
giving spironolactone, an aldosterone inhibitor, can reduce fluid overload
why do glucocorticoids cause bone loss?
decreases osteoblast precurosr cell proliferation and diferentiation
and increases rankl and rank to increase bone reabsorption
diffuse axonal injury can occur when there is
shearing and disruption of the white matter tracts
bacteria in endocarditis like to attach to what?
fibrin deposits from prevously damaged calves
calcified focus (ghon focus) is characterisitic of
PRIMARY TB infeciton
what might neurocystocosis look like?
ventricular action potential and ekg corespondance
the borh and haldane effect
HFpEF due to left ventricular diastolic dysfunction
whaat do gaucher cells look like?
what is the molecular structure of collagen made of
Gly-X-Y so glycine is the most abundant substance
where is blood oxygen the lowest?
in the coronary sinus and in the heart in general since there is a ton of oxygen extration in the myocardium
what is a common cause of congenital goiter with high TSH and low T4
what is a common cause of congenital goiter with low TSH and high T4?
genetic defect in thyroid hormone production
maternal intake of PTU
iodine deficiency
transplacental TSHR stimulating Ab (grave’s dx)
someone has a ruptured cerebral anueyrsm and a heart defect. What is the heart defect?
coarctation of the aorta
salicylate tox can have a mixed acid-base disturbance due to the resp alkalosis and met acidosis so levels can be
normal ish pH
lowish HCO3 due to met acid
low paco2 due to resp compensation for the met acid and resp alkalosis
if someone has a drop in contractility and EF with dobutamine stress test, what does that mean?
fixed atherosclerotic lesion limiting blood flow
what is effect modification?
when the effect of an exposure on an outcome is modified by another variable
can identify this using stratified analysis
what is angle closure glaucoma?
what meds can cause this?
space between the cornea and iris is narrowed, limiting the flow of aqeous humor out of the anterior chamber and raising the pressure
those that cause mydriasis such as alpha adrenergic agonists and anticholinergics
what schistosomiasis can cause hepatosplenomegaly, portal hypertension, fever, diarhea
hepatic schistosomiasis
common in africa and asia
infantile hemangiomas ___ before they regress?
enlarge before they regress
dexrtromethrophan when combined with SSRIs/SNRIs or overdosed can cause
can also cause resp depression or NDMDA receptor inhibitoin and cause hallucinations
SERotonin snydrome
chimeric ab can cause
how is it resolved
serum sickness
phagocytes eat up the IC
verapmil works great on the heart but not the skmuscle. why?
skeletal m has litlte dependence on extracellular calcium
xerdoerma pigmentosum is deficient in
which requires
nucleotide excision repair
endonuclease
___ is more likely than bacterial infection to be the inciting agent of appendcitis
lumen obstruction (fecalithi)
what is AV nodal reentrent tachycardia?
in a niacin def, which enzymes will be effected?
in lactose intolerance the stool pH will be
the breath H will be
low
high
review
BNP is released based on wht?
ventricular wall stretch and strain increase tgat occyrs with volume overload
BNP and ANP are then secreted by the atira to stimulate vasodilation and salt and water excretion to alleviate volume overload