uworld3 Flashcards

1
Q

why does leaning on affected lung in pneumonia cause hypoxemia?

A

right-to-left intrapulmonary shunting and VQ mismatch

with affected lung downward: gravity increases blood flow but decreased ventilation

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2
Q

felty syndrome

A

triad: inflammatory arthritis, splenomegaly, neutropenia

usually established rheumatoid arthritis

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3
Q

cutaneous blastomycosis

A

well circumscribed verrucous nodules and plaques tat progress to microabscesses

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4
Q

what dx? someone with CV risk factors has chronic abdominal pain post-prandial, weight loss, and food aversion?

A

chronic mesenteric ischemia

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5
Q

diagnosis of mesenteric ischemia

A

CT angiogram

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6
Q

first line therapy to chronic stable angina

A

beta blockers

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7
Q

hepatojugular reflex elicited how?

A

press on abdomen with sustained pressure for 10-15 sec

positive: if JVP is >3 cm during compression

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8
Q

what is positive hepatojugular reflex indicative of? and what are main causes of positive reflex?

A

indicates cardiac cause over hepatic cause of lower extremity edema

constrictive pericarditis, RV infarct, restrictive cardiomyopathy

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9
Q

panednoscopy

A

esophagoscopy
brochoscopy
laryngoscopy

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10
Q

mitral stenosis sxs

A

pulm congestion–> SOB, orthopnea, paroxysmal nocturnal dyspnea, hemoptysis

LAE–> afib and systemic thromboembolic complications

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11
Q

what meds can help with cancer-related anorexia/cachexia?

A

progesterone analogues

and corticosteroids–but side effects :(

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12
Q

what dz does cannabinoid help with in terms of cachexia?

A

HIV cachexia

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13
Q

do thiazide diuretics cause hypo or hypernatremia?

A

hyponatremia

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14
Q

how does central or nephrogenic diabetes affect serum sodium levels?

A

nephrogenic-nl because thirst center intact

central- hypernatremic because thirst center not intact

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15
Q

management of asystole/pulseless electrical activity

A

CPR- compressions!
IV access- epinephrine every 3-5 min

no defibs!

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16
Q

what situation do you use defibrillators or cardioversion?

A

v fib

pulseless ventricular tachycardia

17
Q

what has high sensitivity for detecting HF?

A

BNP elevation

JVP, crackles, etc. has good specificity, not sensitivity

18
Q

can you use factor X inhibitors in patients with DVT/PE

A

yes!

similar efficacy to warfarin, and no bleeding complications

19
Q

tricuspid endocarditis comes with diastolic or systolic murmur?

A

systolic

20
Q

aspirin intoxication triad sxs

A

fever, tinnitus, tachypnea

21
Q

aspirin intoxication effect on pH- resp or met?

A

met acidosis
resp alkalosis
near normal pH

do winters!