IBD Flashcards

1
Q

What is the UC pathophysiology?

A

-appears in rectum and colon, more superficial in nature
-can cause hemorrhoids, anal fissures, perirectal abscesses, toxic megacolon, increased risk for colon cancer

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2
Q

What are the drug related causes for IBD?

A

NSAIDs (can be causative) and antibiotics (not causative but associated)

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3
Q

What is the CD pathophysiology?

A

-appears anywhere in GI tract, fistulas are common, nutritional deficiencies are common, hepatobiliary complications, ocular complications, bone and joint complications (arthritis), hematologic and coagulation complications

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4
Q

what are the nonpharmacological therapy recommendations for IBD?

A

-no specific diet shown to be helpful
-probiotic therapy maybe helpful
-surgery

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5
Q

What are the ASA agents?

A

sulfasalazine (sulfapyridine + mesalamine)
-mesalamine (need to find right formulation to deliver to correct area)
-Apriso, Lialda, Pentasa, Asacol HD and Delzicol, Olsalazine, Balsalazide

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6
Q

What role do corticosteroids play in IBD?

A

-induction of remission
-hydrocortisone, budesonide, prednisone, prednisolone
-must supplement calcium and Vitamin D

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7
Q

What role does Azathioprine (AZA) and mercaptopurine (6-MP) have in IBD?

A

-can be used for maintenance treatment after induction on steroids; for pts who have failed 5-ASA tx
-worry abt life threatening anemias (monitor TPMT)

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8
Q

What role does Cyclosporine have in IBD?

A

-not recommended for CD only UC
-can be effective in inducing remission
-cannot be used long term

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9
Q

What role does Methotrexate play in IBD?

A

-used in CD mainly
-may have steroid sparing effects and help induction

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10
Q

What biologics are used for UC only?

A

golimumab (simponi), mirikizuman (Omvoh), tofacitinib (Xeljanz), Ozanimod (Zeposia), Estrasimod (Velsipity)

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11
Q

What biologics are used for CD only?

A

certolizumab (Cimza), natalizumab (Tysabri)

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12
Q

What biologics can be used for both CD and UC?

A

infliximab (remicade), adalimumab (Humira), vendolizumab (Entyvio), ustekinuman (Stelara), risankizumab (Skyrizi), updacitinib (Rinvoq)

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13
Q

What medications have anti TNF activity?

A

infliximab (Remicade), adalimumab (Humira), golimumab (Simponi), Certrolizumab (Cimzia)

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14
Q

What medications have IL-12 and IL-23 antagonism?

A

ustekinumab (Stelara)
risankizumab (Skyrizi) - IL-23 antagonist
mirikizumab (Omvoh) - IL-23 antagonist

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15
Q

what medications are JAK inhibitors?

A

tofacitinib (Xeljanz), upadacitinib (Rinvoq)

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16
Q

what medications are S1P receptor modulators?

A

ozanimod (Zeposia), estrasimod (Velsipity)

17
Q

What is the mechanism of action of natalizumab (Tysabri)?

A

anti-a-subunit of integrin’s (prevents leukocyte adhesion/migration)

18
Q

What is the mechanism of action of vedolizumab (Entyvio)?

A

anti-a4b7 integrin antibody (found on T-lympthocytes)

19
Q

What are the class ADRs for TNF inhibitors?

A

-increased risk of infections
-injection site reactions
-risk of malignancy (lymphoma)
-hepatosplenic T-cell lymphoma (HSTCL) risk
-risk of demyelinating disease
-can exacerbate HF

20
Q

What are the AE’s of concern for Natalizumab (Tysabri)?

A

-PML
-related to antibody JC virus (can test for this)

21
Q

What are the AE’s of concern for Ustekinumab (Stelara)?

A

-cutaneous cell carcinoma in pts w risk factors
-possible neurotoxicity (RLPS, PRES)

22
Q

What are the AE’s of concern for Risankizumab (Skyrizi)?

A

-headache, nasopharyngitis, arthralgia, abdominal pain, anemia, nausea
-potential hepatotoxicity
-increases in lipids

23
Q

What are the AE’s of concern for Mirikizumab (Omvoh)?

A

-headache, arthralgia, rash, injection site reactions, URI infections
-potential hepatotoxicity

24
Q

how do you interpret the TDM of biologics?

A

if ADAs are detectable + sub-therapeutic drug levels = change to alternate drug in same class
if ADAs are detectable + therapeutic drug levels = repeat TDM levels, switch to out of class biologic agent
if ADAs are undetectable + sub-therapeutic drug levels = dose escalate
if ADAs are undetectable + therapeutic drug levels =PD issue= switch out of class biologic agent

25
Q

What AE’s are of concern with tofacitinib (Xeljanz)?

A

-diarrhea, elevated cholesterol, headache, herpes zoster (shingles), increased creatine phosphokinase, nasopharyngitis, rash, URI
-rare ones inlcude: malignancy (lymphoma and other), serious infection, neutropenia, lypersensitivity (angioedema, urticaria)

26
Q

What is the black box warning for Tofacitinib (Xeljanz)?

A

increased mortality and thrombosis in RA patients 50+ with 1 or more CV risk factor

27
Q

What is contraindicated in patients who take Ozanimod (Zeposia)?

A

-pts who experienced a CV event in last 6 months
-some types of arrhythmias
-with severe untreated sleep apnea
-taking an MAO inhibitor

28
Q

What AE’s are of concern in Ozanimod (Zeposia) and Estrasimod (Velsipity)?

A

-liver injury/elevated transaminases
-increase in BP
-respiratory effects
-potential risk of PML
-macular edema
-RPLS/PRES

29
Q

What is the drug interaction of note for Ozanimod (Zeposia)?

A

MAO inhibitors are CI
strong CYP2C8 inhibitors increases exposure of drug
strong CYP2C8 inducers decreases exposure of drug (reduces efficacy)

30
Q

What is the contraindication associated with Estrasimod (Velsipity)?

A

CI in patients who had a CV event in last 6 months or arrhythmias

31
Q

What is indicated for patients with mild-moderate UC?

A

oral or topical ASAs
-combo of oral and topical may be more effective with left-sided/extensive
-if refractory then budesonide or corticosteroids are an alternative

32
Q

What is indicated for moderate-severe UC?

A

moderate can use 5-ASA therapy
-corticosteroids
-consider TNF-a inhibitors/biologics
+ combination of vedolizuman, ustekiumab, thiopurines or MTX

33
Q

What is indicated for severe-fulminant UC?

A

-parenteral corticosteroids
-think about being NPO
-consider TNF-a inhibitors or cyclosporine in pts unresponsive to IV steroids

34
Q

What is indicated for remission in UC?

A

-can use either an ASA, TNF-a antagonist, azathiopurine or 6-MP

35
Q

What is indicated for mild-moderate CD?

A

-can try budesonide, antibiotics
-can try sulfasalazine or mesalamine derivatives however low efficacy

36
Q

What is indicated for moderate-severe CD?

A

-systemic corticosteroids
-potentially early biologic therapy may be helpful (TNF antagonists)
-infliximab or adalimumab + thiopurine
-MTX can be used for induction and remission

37
Q

What is indicated for Severe-fulminant CD?

A

-consider NPO
-parenteral corticosteroids
-consider infliximab or other biologic if not considered previously

38
Q

What is indicated for remission in CD?

A

AZA and 6-MP, MTX (SQ only), TNF-a antagonists