Enzymes, Inducer, Inhibitors Flashcards

1
Q

Enzyme Inducers

A

D for decrease, decrease serum levels of other medications like tobacco and carbamazepine

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2
Q

Someone on Olanzapine starts smoking what should you do to the dose

A

increase dose because smoking increase the metabolism of the drug thus decreasing the effectiveness

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3
Q

Someone who stops smoking on olanzapine what should you do

A

decrease dose

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4
Q

Is smoking an induce or inhibitor

A

inducer - decreases effectiveness by increasing the metabolism of the drug

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5
Q

Tobacco is an important inducer of what enzyme

A

1A2

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6
Q

A person who is on clozapine and doesn’t smoke will have what in comparison to someone who smokes

A

increased serum levels

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7
Q

Inhibitors (12) SICKFACES.COM

A

Sodium valproate
Isoniazid
cimetidine
ketoconazole
fluconazole
alcohol (acute)
chloramphenicol
erythromycin
sulfonamide
ciprofloxacin
omeprazole
metronidazole

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8
Q

Inducers Bullshit CRAP GPS induces my rage (10)

A

Barbiturates (sedatives)
St johns worth
carbamazepine
Rifampin
chronic alcohol use
phenytoin
griseofulvin
phenobarbital
sulfonylureas
smoking cig

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9
Q

How does liver detox affect enzyme activity ?

A

affects enzyme activity and first-pass metabolism - potential toxic drug levels

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10
Q

Enzyme inhibitors

A

hi= high serum levels increases serum levels of other drugs that are substrates of that enzyme

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11
Q

Clarithyromycin and ketonazole are examples of

A

inhibitors

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12
Q

Clozapine is an atypical antipsychotic medication that is metabolized to a major extent by the cytochrome _____ enzyme _____.

A

P450 and CYP1A2

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13
Q

Nicotine is metabolized by the enzyme

A

CYP2A6

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14
Q

enzyme inducers (decrease) can ________ serum level of other drugs that are substrates of that enzyme, possibly causing _______ drug levels.

A

decrease
subtherapeutic

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15
Q

Depakote is a very strong _____ (type of inducers)

A

inhibitors

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16
Q

If the patient is taking an inducer and inhibitor such as Tegretol (inducer) and doxycycline (inhibitor)

A

inhibitors take over the inducers- so if the client is taking the doxycycline, it can cause high serum levels of Tegretol, so you want to decrease the dose of Tegretol.

17
Q

doxycycline, erithromycin, clarithromycin are all examples of

A

inhibitors they take over inducers

18
Q

When Lamictal is taken with Depakote there are significant interactions, why?

A

Depakote is a CYP enzyme inhibitor, meaning it inhibits the metabolism of lamotrigine, leading to an INCREASE in lamotrigine levels in the body.

19
Q

Lamictal toxicity can cause

A

steven johnsons syndrome

20
Q

when Lamictal is taken with valproate typically the laminate dose is adjusted by

A

decreasing it

21
Q

If patient is taking St John’s Wort it is in inducer and Digoxin (heart failure) the St John’s wort can do what to the Digoxin level?

A

it can decrease the serum levels of Digoxin
so PCP may need to increase dose for effectiveness

22
Q
A