UWORLD random 3/20a Flashcards

1
Q

parietal cell epi location

A

upper glandular layer

below simple columnar epi cells that secrete mucus

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2
Q

calcineurin

A

activates NFAT –> NFAT binds IL-2 promotor in nucleus –> ++ IL-2

IL-2 stimulates growth and differentiation of T cells

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3
Q

calcineurin inhibitors

A

cyclosporine

tacrolimus

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4
Q

vit C deficiency sc

A
easy bruising
mucosal bleeding
periodontal disease
poor wound healing
hyperkaratotic follicles with corkscrew airs

scurvy

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5
Q

Vit C deficiency pathophys

A

impaired hydroxylation of proline and lysine residues during collagen synthesis

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6
Q

IL-12

A

on macrophage

stimulate T-cell differentiation into TH1 subset

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7
Q

IL-12 deficiency

A

no activation of macrophages for intracellular organisms (mycobacteria)

tx IFN-y (bypass IL-12)

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8
Q

post strep A complications - preventable with AB?

assoc with skin infxn?

A

PSGN - not preventable by AB

acute rheumatic fever - preventable
NOT after skin infections

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9
Q

multiple myeloma

A

normocytic, normochromic anemia
infiltration of bone marrow by plasma cells
IL-1, IL-6 activate osteoclasts –> bone resorption, osteopenia
hypercalcemia
hyperimmunoglobulinemia
AL amyloid
renal failure

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10
Q

head bobbing with carotid pulsations

A

large LV stroke volume to head and neck

aortic regurg

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11
Q

bounding femoral/carotid pulses

A

wide pulse pressure

aortic regurg

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12
Q

aorti regurg murmur

A

diastolic decrescendo murmur L sternal border

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13
Q

mycoplasma & anemia

A

complement mediated intravascualr anemia

similar antigens to cell membrane of M pneumo and erythrocytes

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14
Q

genetic shift

A

influenza A
rotavirus

segmented genome

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15
Q

normal FEV1/FVC

A

80%

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16
Q

tolerance to opioid side effects does NOT include

A

constipation

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17
Q

Cheyne-Stokes breathing

A

CHF

cyclic breathing pattern
apnea - gradually increasing and decreasing tidal volumes - apnea

poor prognostic sign

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18
Q

location of thoracentesis

A

b/t 6-8 ribs along midclavicular line
8-10 midaxillary line
10-12 paravertebral line

above = hit lung
below = hit liver/abdominal structures
19
Q

familial dyslipidemias (I-IV)

A
I chylomicronemia (LPL, ApoCII -- chylomicrons)
II hypercholesterolemia (LDL-r, ApoB100 -- LDL)
III dysbetalipoproteinemia (ApoE -- chylomicron, VLDL remnants)
IV hypertriglyceridemia (ApoA-V - VLDL)
20
Q

familial dyslipidemia complications

A

I,IV = pancreatitis
I, II, III = xanthomas
II, III = premature CAD

21
Q

transesophageal echo - closest structure

anterior?
posterior?

A

ant = left atrium

post = desc aorta

22
Q

tx adrenal crisis

A

hydrocortisone

dexamethasone

23
Q

active Ras

A

GTP

activate MAPK

24
Q

neprilysin

A

metalloprotrease that inactivates peptide hormones

bradykinin, glucagon, enkephalins, natriuretic peptids

25
ANP
from atrial cardiomyotyces in response to atrial stretch lowers BP via peripheral vasodilation, natriuresis, diuresis (kidney, adrenal gland, BV)
26
glyburide
sulfonylurea
27
liver biosynthetic fxn tests
albumin prothrombin time serum bilirubin poor prognosis
28
conduction vs sensorineural hearing loss
bone conduction > air conduction --> conductive hearing loss middle of forehead = lateralize to affected ear --> conductive lateralize to unaffected ear --> sensorineural hearing loss
29
amitriptyline
tricyclic antidepressant with strong anticholinergic properties ADR = anticholinergic tox (hot as a hare, dry as a cracker, blind as a bat, mad as a hatter, full as a flask, red as a beet)
30
meds with anticholinergic properties
``` antihistamines tricyclic antidepressants 1st gen antipsychotics (chlorpromazine) 2nd gen antipsychotic (clozapine) antiparkinsonian belladonna ```
31
derived from common cardinal veins
superior vena cava systemic venous circulation
32
develops from truncus arteriosus
ascending aorta | pulm trunk
33
constrictive pericarditis phys exam
JVP kussmaul sign pericardial knock (early diastole)
34
kuss maul sign
paradoxical rise in JVP during inspiration vol restricted RV is unable to accommodate inspiratory increase in venous return
35
holosystolic murmur
``` mitral regurg (apex) VSD (LL sternal border) ```
36
loud P2
pulm hypertension
37
midsystolic click
mitral valve prolapse
38
methylmalonic acidemia
AR organic acidemia deficiency of methylmalonyl-CoA hypoglycemia + serum ketones + serum ammonia + urine methylmalonic acid + urine propionic acid lethargy, vomiting, tachypnea in newborn
39
ARDS
risk facors = sepsis, pulm infxn fluid filled alveolar spaces
40
sepsis cytokines
TNF IL-1, 6, 8 activate pulm epithelium, neutrophil chemotaxis
41
estrogen agonist on bone & antagonist on breast, uterus
raloxifene
42
estrogen agonist on bone, uterus, antagonist on breast
tamoxifen
43
concentric LV hypertrophy
pressure overload chronic hypertension aortic stenosis
44
eccentric LV hypertrophy
vol overload aortic/mitral regurg MI dilated cardiomyopathy