UWorld Practice Test Section 1

Question 1

An immunocompromised pt presents w/ a painless ulcer w/ a necrotic center and an erythematous halo. Dx?

Answer 1

Ecthyma gangrenosum

Question 2

What organism most is most commonly associated w/ ecthyma gangrenosum?

Answer 2

Pseudomonas

Question 3

What cardiac problem causes pulses that decrease intensity upon deep inspiration?

Answer 3

cardiac tamponade (this is pulsus paradoxus)

Question 4

How would HSV encephalitis effect the CSF quanitities of the following: WBCs, glucose, and protein?

Answer 4

lymphocytic pleocytosis, normal glucose, hi protein

Question 5

What, aside from WBCs and protein, is present in unusually high amounts in the CSF of pts w/ herpes encephalitis?

Answer 5

RBCs

Question 6

What causes the rise in CSF RBCs in HSV encephalitis?

Answer 6

hemorrhagic destruction of temporofrontal lobes

Question 7

How would acute bacterial encephalitis effect the CSF quantities of the following: WBCs, glucose, and protein?

Answer 7

neutrophilic pleocytosis, low glucose, hi protein

Question 8

How would CHRONIC bacterial encephalitis (e.g. from M. tuberculosis) effect the CSF quantities of the following: WBCs, glucose, and protein?

Answer 8

lymphocytic pleocytosis, low glucose, hi protein

Question 9

What is the effect of restrictive lung disease on FEV1?

Answer 9

low

Question 10

What is the effect of restrictive lung disease on FEV1/FVC?

Answer 10

normal to high (80-120%)

Question 11

What is the effect of chronic bronchitis or emphysema on FVC?

Answer 11

none! (normal value)

Question 12

The most common cause of pseudo claudication is ______, which usually occurs secondary to _______.

Answer 12

spinal stenosis; spinal osteoarthritis

Question 13

Why would a lung cancer pt develop easy bruising and hyperpigmentation?

Answer 13

ectopic ACTH production

Question 14

How dilated must the cervix be in order to be in active labor?

Answer 14

4 cm

Question 15

How fast should the cervix continue to dilate, once in active labor, in order to be normal progresion of labor?

Answer 15

> 1 cm/hr

1.2 for nulliparous, 1.5 cm for multiparous

Question 16

What 3 factors must be considered when labor is protracted?

Answer 16

Power, passenger, and pelvis

Question 17

What is a Montevideo unit, which is used to assess the adequacy of contractions using intrauterine catheters?

Answer 17

mmHg per 10 mins

Question 18

What is considered adequate contractions in Montevideo units?

Answer 18

> 200

Question 19

Station refers to the relationship of the presenting bony part of the fetal head in relation to the _______.

Answer 19

ischial spines

Question 20

How often should contractions occur in order to be termed adequate?

Answer 20

every 2-3 mins

Question 21

How long should contractions last in order to be termed adequate?

Answer 21

40-60 sec