Uworld journal part 2 Flashcards
how does diptheria get its toxin
phage conversion
most AB toxins are aquired this way
amphotericin B toxicity
Severs hypokalemia and hypomagnezemia can result due to severe renal damage
moniter serum K+ and Mg2+
used after an infection for mucormicosis
PPAR Gamma
intracellular nuclear receptor that TZDs agonize the most important target is adiponectin
C. Teteni toxin directly effects the release of what neuro transmitter
GABA or glycine
NOT Ach thats botchulism
progressive spastic paresis and choreoathoid movements
lab: high arginine levels
Arginase deficency
makes urea and ornithine from arginine
low protein diet that is devoid of arginine
can look like cerebral palsy
part of long bone that osteomylites effects
the metaphasis because of the slow flowing sinusoidal vasculature
manifestation of parvo virus in adults
acute arthropathy that resolves on its own
what is close to the inferior thyroid artery
the recurrent laryengial nerve
derivitive for the R cardinal vein
SVC
sandwhiched between the acending aorta and R pulmonary artery
what is formed when a patient gets the diptheria vacciene
IgG circulating antibodys
protects people from when the toxin is released into their body
artery most likely to be affected by a midshaft humerous fracture
deep brachial artery
what does cortisol act on to induce the production of epinephrine from NE
phenylethanolamine-N-methyltransferase (PNMT)
what do people with homocystineurea need to be supplemented with
vitamin B6
because they have a deficency in cystethione beta-synthase
present with marfanoid habitis, clotting issues, and mental retardation
myoclonic seziures
no loss of consiousness, Brief jerking movments
treat with valproid acid
what pharmacotherapy for PTSD
SSRI or another anti depressant
what will you find with autonaumic neuropathy resulting in urinary incontanance
increase post void residual volume
this is also called overflow incontance
phenoxybenzamine
alpha 1 antagonist
used to pretreat before removal of a pheochromocytoma
how does HBV cause cancer
integration of viral DNA into the host genome
side effect of mannatol and other osmotic diuretics
flash pulmonary edema
thickened renal arterials that stain pink with hematoxylin eosin
think non-malignany hypertension or diabetes mettitus
what is a plausable way to decrease the ereythrocyte precurser apoptosis seen with folate deficency
supplement with thymidine (neucleiec acid) so that there would be some dTMP
aromatase deficency
results in maternal virulization during pregnancy and ambiguus genitalia for the XX neonate
the neonate will have an increased androgen level
proof reading
3’==> 5’
fidaxomicin
macrocyclic antibiotic (related to macrolides)
use for recurrent c-diff infections
are concentrations of angiotensin 2 higher in the pulmonary veins of the pulmonary arteries
veins
during a check up what should be tested in patients taking SGA (olanazpine)
a lipid panel and a fasting gluconse
side effect of methylphenidate
used for ADHD
Decreased appitite and weight loss
c-myc
implicated in cell proliferation
proteosome inhibitors cause what
apoptosis
used in multiple myloma
why dot you want to give TCAs or venlafaxine to someone with bipolar 1
because you may precipitate a manic episode
enterocept
TNF alpha inhibitor used in rheumatoid arthritis
acts as a soluble receptor decoy protein
protective facotors against ovarian cancer
- oral contraceptives
- multiparity, breastfeeding
- tubal ligation, salpingo-oophorectomy
what should thrombophelibitis raise suspicion for
viceral cancer
most frequantly of the pancreaus
what should be given to a patient with sever asthma that is refractory to corticosteroids
andi IgE antibodies
omalizumab is an example
Fatigue, weight gain, myoedema (lumping with percussion), and elevated CK
think hypothyroid myopathy
what does shigella like toxin do
inactivates the 60s ribosomal subunit
how is the glycerol backbone of triglycerides salvaged for gluconeogenisis
glycerol kinase
enoxaparin binds to what?
antithrobin III
base excision repair sequance
- Glycosylase cleaves the altered base leaving an AP site
- endonuclease cleaves the 5’end and lyase cleaves the 3’ end
- DNA polymerase fills the single nucleotide gap and ligase seals the nick
golgi tendon organ
causes epontanious mucle relaxion when lifting too much weight
interacts with inhibitory interneurons that then interact with the out going alpha motor neurons
stimulation of what nerve can help OSA
hypoglossal
treatment for bulimia nervosa
SSRI like fluoxitine
treatment of bipolar disorder
lithium, valproate, or quietapine
Labs show hyponatremia, decreased TSH and free T4, decreased cortisol and the woman hasn’t started lactating
pan-hypopit
Sheehans syndrom caused by ischemia
where do hydroceles collect
tunica vaginalis
comedonal and inflammatory nodular eruptions on face chest and back in an 20 something athletic male
think steroids like methyltestosterone
first line therapy for chronic asthma
Fluticasone
immunosupression so it inhibits leukocytic infiltrate
causes of eisenmenger syndrome
uncorrected left to right shunt
VSD, ASD, PDA
what will you see in the spleen of a sicle cell patient
fibrosis and atrophy due to recurrent infections
cause of macrocytic anemia in a sickle cell patient
folic acid deficency
caused by increased cell turnover
will have a relatively low reticulocyte sndex
method of reporting with exposure and non exposure
exposure odds ratio
most important factors in blood flow auto regulation
nitric oxide and adenosine
flow mediated vasodilation
what does aspirgillus cause as it forms and what kind of cancer does it cause
aflavitoxins
strongly linked with hepatocellular carcinoma
G==>T substitution
think aspirgillus when you think of toxic moldy grains
Rasburicase
can be used to prevent build up of/excretion of uric acid seen in tumor lysis syndrome
it is a urate oxidase inhibitor and you can use it n conjunction with or as a substitute for allopurinol which inhibits xanthine oxidase
with tumor lysis syndrome you can have electrolyte abnormalities and arrythmias
what lines the walls of a pancreatic pseudocyst
fibrous and granulation tissue
patient on dialysis that is bleeding from a catheter site
uremic platelet dysfunction
The only thing that is wrong is a prolonged bleed time
wiscott aldrich syndrome
Recurrent infections, thromocytopenia, eczema
X linked disorder
mixed B cell and T cell dysfunction
how is PKU inherated
AR
pain that radiates to the neck with a R lower lobe PNA
the pain sensation of carried by the phrenic nerce which innervates the medistinal pleura and the diaphragmatic pleura
dopamine agonists
ergot: bromocriptine
Nonergot: pramipexole, ropinirole
extrapyramidal side effects
- acute dystonic reaction: sustained muscle contractuiions
- akathsisa: subjective restlessness with inability to sit still
- Drug induced parkensonism
rifaximin
non-absorbable antibiotic that alters GI flora to decrease intestional synthasis and absorption of ammonia
lactulose
increases the conversion of ammonia to ammonia by acidifying the stool
acute stress disorder
presents with night mares similar to PTSD
what should you look for when a child has an imperferate anus
urinary tract defects
equation for alveolar gradient
PAO2= 150- (PaCO2/0.8)
Normal is 10-15
origen of schwann cells
neural crest
function on snRNPs
removal on introns from RNA transcripts
transferrance
applying a feeling towards someone in the past towards someone in the present
Ex. someone saying a doctor doesn’t car for them when their mother didn’t care for them in the past
you see atrophy of what in alzheimers disease?
Lentiform nucleus
region where frontal, parital, temporal, and sphenoid bones meet in the skull
Pterion
Fracture here likely severs the middle meniengial artery which is a branch of the maxillary artery
surface glycoproteins that confers resistance to cancer drugs
efflux pump
ATP dependant transporter
what increases right afer B12 replacment
reticulocyte count
Severe combined immune deficiency
low CD3+ T cells
- recurrent viral and bacterial infections
- can have thymic aplasia
juvinile cateracts but otherwise asymptomatic
Deficency in galactokinase
aldose reductase causes production of galactitol which causes cateracts
which part of the kidney responds to ADH
the medullary collecting duct
ventromedial neculeus of the hypothalamus
mediates saity
without it patients experiance hyperphagia
lateral nucleus of the mypothalamus
Mediates hunger
destruction leads to annorexia
posterior nucleus of the hypothalamus
mediates heat conservation
arcuate nuclease
secretes dopamine, GHRH, and RnRH
renin in secondary hyperaldosteroneism
low
K low
Bicarb high
sodium normal
Methylmalonic acidemia
-increased methylmalonic acid in urine
-increased propionic acid
decreased glucose
-increased urine ketones
-increased serum ammonia
deficency in methylmalonal co mulase which catalyses the reaction methylmalonyl CoA ==> succinyl CoA
what dephosforolates glycogen synthase
protein phosphatase 1 which is activated by insulin
what is really effective at inactivating thrombin
unfractionated heprin
myotonic dystrophy
- AD
- Frontal baldness, cataracts, gonadal atrophy
- difficulty releasinf grip
- repeat expansion of CTG in the gene that codes for myotonia protein kinase
- type 1 muscle fibers are affected
what is seen on a liver biopsy in a petint with Reye syndrome
Microvascular steatosis
they slip into a coma because of hyperammoiema
side effects of CCB
peripheral edema
equations for cardiac output
CO=HRxSV
CO= (O2 consumption/ arteriovenous difference)
does left ventricular end diastolic pressure decrease with nitro
Yes
what is rho- gam
anti-RH D antibodies so that they can interact with fetal RBC
Tuberoinfundibular pathway
connects the hypothalamus and the pituitary gland
responsiable for dopamine dependent inhibition of prolactin
pallor of the substantia nigra, locus ceruleus, and vagal nucleus dorsalis
PKU
defeciency in phenylalanine hydroxylase
HIV patient with fever, hepatospleno megaly, , retroperitenoal lymphadenopathy
acid fast bacteria that grow optimally at 41 degrees
mycobacterium avium complex
prephalyxis: azithromycin
characteristics of burgers disease
vPVD sensitive to tobacco extract
-segmental vasculitis extending into contiguoud veins and nerves
decreased activity of which enzyme can cause the formation of gall stones
7-alpha-hydroxylase
emperic treatment for patient with endocardidis caused by Coag negative staph
VANCO because a lot of them are resistant
what do aurer rods stain + for
peroxidase
always look for auer rods when they give you a blood smear
uroporphobiligin decarboxylase
uroporphyrinogen III ==> coprophyrinogen III
most common deficency in porpheryn synthesis
abd pain, photosensativity (because it is involved in the late stages of porpheryn synthasis)
what explains the symptoms in mysthenia gravis
reduced motor end plate potential
probability of being free from a disease if you test - for it
NPV
Most likely diagnosis if PT does not corrcet with vit-K supplementation
factor VII deficency
Factor VII has the shortest half life
if someone is paranoid about just one thing like a group of people trying to poisen them
delusional disorder
pigment stones
usually secondary to infection whihc leads to the release of beta-glucuronidase by injured hepatocyted or bacteria
this enzyme contibutes to the hydrolysis of bilirubin glucuronides and increases the amount of unconjugated bili in the bile
opisthorchis sinensis is a fluke that is associated the the formation of these stones
what do gliomas stain posative for
glial fibrillary scidic protein (GFAP)
HLA class I
present on all nucleated cells (HLA B27)
HLA class II
DR, DP, DQ
expressed by antigen presenting cells
associated with rheumatoid arthritis, DM type 1,, and ciliac
issues with finger extention
radial nerve
passes through the supinator canal and that is normally where the injury is
dysplastic tissue is differentiated from neoplastic tissue how?
reversability of changes
Ddx if the shilling test reveals low B12 in both phases
Ilial disease, pancratic insufficency, intestinal bacterial overgrowth
Ipratroprium
blocks muscarinic receptors preventing vasoconstriction
acetocholene released by the vegas nerve is what stimulates these receptor
what amino acid precurser makes nitric oxide
Arginine
Arginine + O2=(eNOS)=>NO + Citruline
Dofetilide
potassium channel blocker
part of GI tract that celiac effects
small bowel
echinococcus granulosus
form hydated cysts in the liver causing anaphylaxis if antigens released
- use ethanol or hypertonic saliene to kill daughter cysts before romoval
- use Albendozole to treat
- contracted from dogs
first line treatment in narcalepsy
modafinil
non-amphetamine stimulant to help people stay awake
Widened QRS or ventricular arrythmia
indication for sodium bicarb
Use in arrythmias caused by TCAs
- it increases the serum PH making the TCA favor the non ionized form makinging less accessable to bind to sodium channels
- it also increases extracellular sodium which helps overcome the competitive rapid sodium channel blockade by the TCAs
chlordiazepoxide
benzodiazapine
-the only one that doesn’t end in “pam”
muscle responsable forr lifting arm over head and stabilize and rotate the scapula upward
serratus anterior
- innervated by the long thoracic nerve which arises from the C5-7 nerve roots of the brachial plexus
- can be injured by axillary lymphnode removal
enerocutanious fistula
chrone’s disease
what is consistant with lymphoma on histology
Monoclonal T-cell receptor gene rearrangments indicating that there is a possible malignancy of that one cell type
-if a dsingle allele for the V region of the TCR predominates in a lymphocytic population monoclonal proliferation in suspected
strongyloides stercoralis
- will see rhabditiform larvae in the stool
- migrate to the lungs and then move to the intestine where they lay their eggs to be hatched
chronic cough and recurrent respoiratory infections
drug that prolongs PT and PTT but has no effect on thrombin time
Xa inhibitors
-Rivaroxaban, apixaban
mallory-weiss tears
occur due to rapid increases in intraabdominal pressure
what does silicosis do in terms of immunity
impairs macrophage killing predisposing these patients to having TB
normal liver biopsy in the setting of ruptured esophegial varicies
thinkportal vein thrombosis
these patients will have splenomegaly in the setting of hematemisis
what happens to the C-peptide of insulin
it is packed into secratory granules and released from the cells
low FEV1 with eosinaphils
Patient likely has asthma
Avoid animal dander
acute confusion
think delirium
patient that had recent surgery and presents with symptoms of cholestais, and fever
think drug induced hepato toxicity caused by inhailed anesthetics like halothane
will see a sshrunken liner with hepatocellular pattern of injury
Labs: elevated LFT and prolonged PT (failure of synthetic function and factor VII) , leukocytosis, eosinophilia
Friedreich ataxia
- autosomal resessive trinucliotide repreat (GAA) on chromosome 9
- gene code for frataxin which is an iron binding protein
- present with kyphoscoliosis, ataxia, nystagmus, muscle weakness, pes cavus (high arched foot) , hammer toes, diabetes, and hypertrophic cardiomyopathy
blastomycosis
- endemic in the southern states
- caused pulmonary symptoms on IMMUNOCOMPITANT hosts
- dimorphic, can for yeast buds in humans (look like owls eyes) and a bud with a broad base
- can cause pulmonary infiltrates that can disseminate to the skin or bone
- treat with azoles
first line of defemce whien trying to reverse heperin
protamine, give it beofre anything else
what do esophageal veins branch off of
the left gastric vein which comes directly off of the portal vein
what vessels are most suseptible to atherosclerosis
coronary arteries and lower abdominal aorta
JAK/STAT pathway
think JAK2 which is a tyrosine kinase which is constitutively active in chronic myeloproliferative disorders
-Treat with the JAK2 inhibitor rucolitinib
young patient with recurrent episodes of chest pain, sweating, and palpitations. What do you give him
benzos, he is having a panic attack
Ribavirin
inhibits synthasis of guanine nucliotides by competitively inhibiting inosine monophosphate dehydroginase
interferes with duplication of viral genetic material
Uses: chronic HCV, RSV
Toxicity: Hemolytic anemia, severe tetrogen
vision loss with temporal lobe mass
-it effects myers loop witch barries libers from the upper quanrent of the contrallateral eye field resulting in left homonymous quadreantanopia
what is scaulded skin syndrome caused by
exotoxin mediated skin damage
-you get endotoxin mediated response with gram - organisms
what land mark is useful in identifying the appendix
Tenia coli
what area of the aorta is involved in blunt aortic injury
aortic isthmus (decending portion of the arch of the aorta)
isolated systolic hypertension
caused by age related stiffening of the aorta
-if it were dur to renal artery stenosis then both SBP and DBP would be elevated
**Look at both numbers
Alkaptonuria
- Autosomal Recessive
- Deficency in homogentisate oxidase in the degradative pathway of tyrosine to funerate
- black urine, dark connective tissue, may have debilitating arthralsias
IgE independent mast cell degranulation occurs in the setting of what
Adverse drug reaction to opioids, radiocontrase agents, and vanco
- The induce degraulation by activation of PKA and PI3 kinase
equation for renal flow
Flow= r^4
-if the flow is decreased by a certain amount then devide by that amount
biliary sludge
precurser to developing a stone
-pain after eating a fatty meal
target of treatment in 21-hydroxilase deficency
- supress ACTH
- If you supress ACTH then you will decrease the amout of sex hormone being made
- do this by giving physiologic doses of glucocorticoid
increased slope of both cardiac function curve and the venous return curve
Decreased total peripheral resistance caused by a continious arteriovenus fistula
delta-aminolevilinate synthase
- B6 is a cofactor
- deficiency can case sideroblastic anermia in the setting of ISN use
histology of hoshimoto thyroiditis
- mononeuculear parenchymal infiltration with well developed germinal centers
- often surrounded by hurthle cells which are large oxyphilic cells filled with granular cytoplasm which represent follicular epithelium that have undergone metaplastic change in response to inflammation
how is androgenic alopecia inherited
polygenic inheritance
underlying mechanism of zenker diverticulum
Cricopharyngeal motor dysfunction
what is used for energy in cholesterol synthasis
NADPH made in the ribose 5-phosphate pathway
protein abnormality seen in patients with CF
abnormal post translational modifications because of the deletion of a phenylalanine
type of hypersensitivity with monoclonal antibodies
type 3
- it causes serum
- can present with joint pain and puritic skin rash
symptoms of a gastrin secreting tumor
- dirrehea
- postbulbar duadenoal ulcers
where is the common peroneal nerve mot often injured
fibular head