Chapter 74: Inflammatory Bowel Disease Flashcards
Types of Inflammatory Bowel Disease (IBD)
Ulcerative Colitis and Crohn’s Disease
Classic symptom of IBD
bloody diarrhea
Which class of drugs can cause IBD flares
NSAIDs
What is the difference between IBS and IBD
IBS does not cause inflammation and is not as serious
Ulcerative colitis is characterized by mucosal inflammation confined to the
rectum and colon with superficial ulcerations
When UC is limited to the descending colon and rectum, it is called ___ and can be treated with ____
distal disease
topical (rectal) treatment
Inflammation limited to the rectum is called
proctitis
Are fistulas/strictures are common in crohn’s disease or ulcerative colitis?
CD
Where is Crohn’s Disease located
Entire GI tract
Crohn’s Disease depth is
Transmural
CD pattern vs UC pattern
CD is non-continuous
UC is continuous
diagnosis of IBD
colonoscopy with tissue biospy
imaging can be useful as well
lifestyle management to help IBD
smaller, more frequent meals, low fat and dairy diet, drink plenty of water, avoid alcohol and caffeine
useful OTC agents in IBD
antidiarrheals or antispasmodic (careful)
vitamin supplements
probiotics
What is commonly used to treat acute exacerbations in both UC and CD
short courses of oral or IV steroids
used until remission and tapered 8-12 weeks
What is used for maintenance therapy in UC (distal or mild extensive disease)
aminosalicylates
ie. 5-ASA
What is preferred for mild CD that is limited to the ileum and proximal colon
Budesonide for ≤ 3 months
After this course, d/c treatment or change to thiopurine or MTX
What can be used for moderate-severe CD for maintenance of remission
Anti-TNF agents (Humira, Remicade, Cimzia)
Thiopurine
MTX
Stelara (IL receptor antagonist)
What can be used for refractory treatment or steroid dependent CD
Vedolizumab or natalizumab (integrin receptor antagonists)
What can be used for mild UC for maintenance of remission
Mesalamine (5-ASA) rectal and/or oral preferred
What can be used for moderate-severe UC for maintenance of remission
Anti-TNF agents (Humira, Remicade, Simponi) Thiopurine Cyclosporine Stelara (IL antagonist) Xeljanz (JK inhibitor)
What can be used for refractory treatment or steroid dependent UC
Vedolizumab (integrin receptor antagonist)
Budesonide brand name
Entocort EC (for CD only) Uceris (for UC only)
If steroids are used long than ___ weeks, they must be tapered
2 weeks
Which drug can be used for both induction and maintenance of UC and CD
Budesonide
Rectal steroids (hydrocortisone and budesonide rectal foam) are indicated for __ only
UC
use for 3 months in maintenance
When using budesonide, must avoid strong and moderate ____ of which CYP enzyme, including ____
inhibitors
3A4
grapefruit juice and grapefruit products
mesalamine ER capsules brand name
Pentasa
mesalamine ER tablets brand name
Asacol HD
mesalamine enema brand name
Rowasa
mesalamine suppository brand name
Canasa
Which formulations does mesalamine come in
oral (caps, tabs) and rectal (enema, suppository)
Induction with mesalamine for UC oral therapy is used for ___ weeks and rectal therapy for ___ weeks
6-8 weeks oral
3-6 weeks rectal
Mesalamine rectal suppository should be retained in the rectum for at least ___ hours
1-3h
Mesalamine enema should be retained in the rectum for how long
Overnight (~8h)
Mesalamine CI
hypersensitivity to salicylates or aminosalicylates
For distal disease/proctitis in UC, which formulation of mesalamine is more effective
Rectal
Mesalamine ER tablet (Asacol) and ER capsule (Delzicol) can
Leave a ghost tablet in the stool
Sulfasalazine CI
salicylate and sulfa allergy
Balsalazide can cause
staining of the teeth/tongue
Which genetic deficiency is checked for azathioprine?
what’s the risk?
TPMT
are at increased risk of myelosuppression
Methotrexate can be used for induction & maintenance of remission in mod-severe
CD (in pts who cannot tolerate azathioprine)
How is MTX dosed in CD
once weekly by IM or SC route
Which immunosuppressive drug is recommended for severe UC
Cyclosporine
Natalizumab is only approved for
CD
How often is natalizumab given
every 4 weeks
Natalizumab should be d/c if no response by ___ weeks
12
Vedolizumab is approved for
UC and CD
Vedolizumab should be d/c if no response by ___ weeks
14
Natalizumab boxed warning
PML
Natalizumab is only available through
REMS TOUCH program
Natalizumab brand name
Tysabri
Vedolizumab brand name
Entyvio