9/16/12 a Flashcards

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1
Q

What pharmalogical agent can be used to treat carcinoid syndrome prior to surgery or if disease is disseminated?

A

Octreotide

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2
Q

What is octreotide? What does it do?

A

Somatostatin analog; inhibits the release of many hormones, including gastrin, CCK, glucagon, growth hormone, insulin, secretin, pancreatic polypeptide, TSH, and VIP.

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3
Q

How does octreotide combat the Sx of carcinoid syndrome?

A

slows GI secretions and motility and causes peripheral vasoconstriction

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4
Q

What othe conditions are treated w/ octreotide?

A

Gigantism/acromegaly, VIPoma, and thyrotropinoma

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5
Q

Where are carcinoid tumors most commonly found? What are the Sx of tumors in this location?

A

midgut; no Sx b/c products metabolized by liver before entering systemic circulation

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6
Q

What is finasteride? What is it used for?

A

5-α-reductase inhibitor (prevents production of DHT; BPH

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7
Q

What is flutamide? Use?

A

competitive androgen antagonist; prostate cancer

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8
Q

What is the target of ondansetron?

A

inhibits 5-HT3 receptors; also inhibits stimulation by vagus n.

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9
Q

What two conditions could cause jugular venous distention, hypotension, and tachycardia?

A

cardiac tamponade or tension pneumothorax

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10
Q

Pt presetns w/ Sx of severe rheumatoid arthritis for past 6 mos. What drugs would you give her for immediate relief? For long-term tx?

A

Corticosteroids (or NSAIDs); MTX

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11
Q

What is the classic triad of congenital birth defects d/t rubella?

A

Cataracts, sensorineural deafness, and PDA.

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12
Q

How do we prophylax congenital rubella?

A

Live attenuated vaccine for women of childbearing age

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13
Q

What kind of vaccine are used for HAV and rabies?

A

Killed

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14
Q

What type of vaccine is used for MMR?

A

live, attenuated

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15
Q

How does enfuvurtide tx HIV infection?

A

prevents fusion

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16
Q

What is the main difference between the central chemoreceptors of the medulla and the peripheral chemoreceptors of the aortic and carotid bodies?

A

central respond to hypercapnia, peripheral to hypoxia

17
Q

What are pulmonary C fibers?

A

stretch receptors that determine the length of inspiration and expiration

18
Q

Budding yeast that forms germ tubes (hyphae) at 37 degrees.

A

Candida albicans

19
Q

Which vasculitis is commonly associated w/ liver necrosis? Why?

A

Polyarteritis nodosa; viral hepatitis

20
Q

What is the tx for giant cell arteritis?

A

prednisone

21
Q

How are both metronidazole and oral contraceptives metabolized?

A

Hepatic CYP450

22
Q

What does a positive straight leg raise test indicate?

A

sciatica, esp. by intervertebral disk herniation

23
Q

What is the level of the sciatic nerve roots?

A

L4-S3

24
Q

Pure red cell aplasia (PRCA) is associated with what tumor?

A

thymoma

25
Q

Pure red cell aplasia is associated with what infection?

A

Parvovirus B19

26
Q

Cilostazol is used to treat intermittent claudication. What is its mech and 2 main effects?

A

phosphodiesterase inhibitor; prevents plt aggregation and causes vasodilation

27
Q

Pts w/ PCOS have persistently elevated levels of which 3 hormones?

A

LH, Estrogens, and Androgens