USMLE

Question 1

PSA screening

Answer 1

determined on a case by case basis

Question 2

What mobitz is a wenchebach

Answer 2

mobitz 1

benign and transient

Question 3

Long PR interval is a ?

Answer 3

1st degree heart block

PR > 0.20 seconds

Question 4

Ps and QRS have no relationship

Answer 4

3rd degree heart block

Question 5

Urine protein excretion of 1 g/ 24 hours

Answer 5

proteinuria

Question 6

Treatment of severe PCP

Answer 6

tmp-smx and steroids

severe if: PaO2 < 70 or A-a > 35

Question 7

Rx of toxic megacolon

Answer 7

emergency!
IV steroids 
nasogastric decompression 
abx
fluid management

Question 8

Increased serum aldosterone results in?

Answer 8

serum alkolosis

Loss of H and loss of K into urine

Question 9

Splenic sequestration of blood cells common in

Answer 9

cirrhosis
malaria
sickle cell

Question 10

Cor pulmonale

Answer 10

impaired RV fxn from pulm htn

Question 11

heart failure with preserved ejection fraction is usually?

Answer 11

due to hypertensive changes

Question 12

Heart failure from CAD is likely?

Answer 12

systolic dysfunction with decreased LV ejection

Question 13

antianginal effects of nitro are from?

Answer 13

systemic vasodilation–> ↓ preload –> ↓ wall stress and o2 demand

Question 14

Ventilation in ARDS

Answer 14

low tidal volume improves mortality in ARDS

Question 15

Febrile neutropenia needs?

Answer 15

empiric broad spectrum coverage with anti-pseudomonal coverage
Pip-Tazo is good

Question 16

DDX of toxic megacolon

Answer 16

fever > 38
pulse > 120 
WBC > 10,500 
anemia 
w/ megacolon

*emergency steroids, abx, nasogastric decompression, and fluid management

Question 17

FDA has added a warning against the use of _________ as monotherapy in asthma

Answer 17

long-acting β2-agonists

Question 18

___________ is the only medication with consistent evidence showing that it improves depression symptoms in children and adolescents

Answer 18

Fluoxetine

Question 19

The primary treatment for symptomatic mitral valve prolapse is ___________

Answer 19

β-blockers

Question 20

___________ are the most common drug-related cause of acute interstitial nephritis

Answer 20

Antibiotics, especially penicillins, cephalosporins, and sulfonamides

Question 21

nervous system vs erection and ejaculation

Answer 21

erection- para

ejac- sympa

Question 22

treating premature ejaculation medically

Answer 22

Fluoxetine raises the threshold for orgasm, making it an effective treatment option

Question 23

Lab test for alcoholism

Answer 23

Elevated GGT is shown to be more sensitive than an elevated MCV, ALT, AST, or LDH

*but other things can also raise it, not sensitive

Question 24

What age do mammograms stop

Answer 24

75

every 2 years from 50-75

Question 25

s/s of thyroid storm

Answer 25

fever hemodynamic instability cardiac arrhythmia CHF

Question 26

emergent rx for acute angle glaucoma

Answer 26

mannitol acetazolamide pilocarpine timolol

Question 27

Atropine and pupil size

Answer 27

atropine dilates pupils

Question 28

estrogen and T4

Answer 28

estrogen --> ↑ T4 binding--> ↑ T4 labs *but actually pt is euthyroid

Question 29

Good med for wt loss in DM

Answer 29

GLP-1 agonist | ↓ appetite

Question 30

s/s of glucagonoma

Answer 30

rash DM GI upset anemia

Question 31

Subclinical hypothyroidism

Answer 31

defined as slightly ↑ TSH and normal levels of thyroid hormone (free T4 or free T3 ) in an asymptomatic patient.