GI Flashcards
What causes C-Diff
Clindamycin
What is the tx for C-Dif
VANCOMYCIN
another option to treat C-diff if Vanco not available
Metronidazole
painful, linear crack in distal anal canal
Posterior midline most common place
Anal fissure
Severe painful rectal pain
BRBPR (bright red blood per rectum)
Skin tags in chronic conditions
Anal fissure
Tx for Anal fissure
80% of time will spontaneously resolve!!
Otherwise:
- sitz bath
- pain meds
- fiber
- more water
- stool softener
- laxative
2nd and 3rd line mgmt for Anal fissure
2nd: Nitro, Nifedipine ointment
3rd: Botox injections
Lastly: surgery- sphincterotomy for refractory cases
Bleeding, but NO PAIN hemorrhoids above the dentate line
Internal hemorrhoids
Internal hemorrhoid that spontaneously reduces, what class is this?
Class 2
Internal hemorrhoid that requires manual reduction
Class 3
Hemorrhoid that is below the dentate line and is PAINFUL, but no blood
External hemorrhoid
Tx for Hemorrhoids (1st line)
fiber increase fluid intake sitz bath topical rectal steroids lidocaine- for pain excision of external
Most common procedure to remove hemorrhoids
Rubber band ligation
When to perform Hemorrhoidectomy
stage 4 or those not responding to other tx
Any segment of GI tract Fistulas, strictures, abscess GRANULOMAS Crampy, RLQ pain deeper
Malabsorption risk: B12 and Iron
Crohn’s Dz
Skip lesions
Cobblestone appearance
Crohn’s Dz
“String sign” as barium flows thru narrowed/inflamed area
Crohn’s Dz
+ASCA antibodies
Crohn’s Dz
Surgery is non-curative for this type of IBD
Crohn’s Dz…. bummer
Extra-GI sx of IBD
outside of the GI tract
MSK pain, arthritis Erythema nodosum Anterior uveitis, HA, blurry vision Fatty liver, PSC Malabsorption- Iron, B12
Rectum is ALWAYS involved in this type of IBD
Ulcerative Colitis
Colicky LLQ pain
Tenesmus, urgency to defecate
Ulcerative Colitis
Bloody diarrhea is hallmark of this dz
Ulcerative Colitis
Which type of IBD has NON bloody diarrhea, and crampy RLQ pain?
Crohn’s Dz
Pseudopolyps are seen on Colonoscopy in which type of IBD
Ulcerative Colitis
“Stovepipe sign” (loss of haustral markings) seen on barium study in this condition
Ulcerative Colitis
P-ANCA antibodies
Ulcerative Colitis
Tx for limited ileo-colon Crohn Dz
5-ASA or
Oral steroids
Tx for Mild-moderate distal Ulcerative Colitis
topical 5-ASA
can add topical steroids or increase to Oral 5-ASA prn
General tx classes for IBD
5-ASA
Steroids
Meds used for Refractory cases of Crohn’s Dz
Azathioprine, 6-Mercapto
-both inhibit immune response
Methotrexate
-anti-inflammatory
Anti-TNF
-inhibit pro-inf cytokines
How does Methotrexate work
anti-inflammatory
How do Azathioprine and 6 Mercaptopurine work?
Inhibit immune response
Tacrolimus
Reserved for refractory cases of IBD
It’s a Macrolide Abx with immunomodulatory properties
Neoplastic
abnormal growth, tumor
can be BENIGN or CANCEROUS
Tubuler adenoma
Most common type of Adenomatous polyp
but least risk of –> CA
Villous adenoma
HIGHEST risk type of adenomatous polyp for becoming CA
Most Colorectal CA arises from
Adenomatous polyps
Which type of IBD puts you at higher risk of Colon CA?
Ulcerative Colitis
Genetic condition with many polyps. Most will develop Colon CA by age 45 with no intervention.
Prophylactic Colectomy is recommended!!!!
Familial Adenomatous Polyposis
“FAP”
HNCC “Lynch syndrome”
Hereditary Nonpolyposis Colorectal CA
Autosomal dominant
d/t gene issue
Type 1: Risk of Colon CA (right side)
Type 2: Risk of Endometrial CA
mean age 40s, but can get CA as early as 20s
Most common cause of Large bowel obstruction in adults
Colorectal CA
Dx test of choice for Colon CA
Colonoscopy with biopsy
Apple core lesion
seen on Barium enema study
Colon CA
Most common cause of Occult GI bleed in adults
Colorectal CA
will see Iron deficiency Anemia
What tumor marker is associated with Colorectal CA?
CEA!!!
Tx for Colorectal CA
Surgical resection, then Chemo
What is Chemo called when it’s post-surgery?
Adjuvant, to destroy residual cells and small mets
Tx for Metastatic Colorectal CA
Palliative chemo
When should you have a fecal Occult blood test if you are average risk for Colon CA?
at age 50, annually
Colonoscopy q10 years
When do you stop having Colonoscopy and Fecal occult blood test?
age 75
If you have 1st deg relative who got Colon CA at age 60 or OLDER
Start fecal occult blood test at 40 YO and Colonoscopy every 10 years
If you have 1st degree relative who got Colon CA YOUNGER than 60 yo
Fecal occult and Colonoscopy at age 40, then Colonoscopy every 5 years!
start this at age 40, OR 10 years before relative was dx
Normal person screening with Colonoscopy
every 10 years from age 50-75
If Fhx of Lynch Syndrome (HNPCC- Hereditary nonpolyposis colorectal CA), when do you start screening?
20-25 YO with Colonoscopy every 1-2 years
If Fhx of FAP (Familial adenomatous polyposis), when do you start screening?
10-12 yo with Flex sig yearly!
Which family condition has earlier screening and more regular (yearly) f/u screen?
FAP!!!
start screening at 10 YO and flex sig every year
Many types of Esophagitis
Infectious Eosinophilic (allergic rxn) Pill induced Corrosive GERD
3 classic sx of Esophagitis
Painful swallowing (odyno) Difficulty swallowing (dys) CP retrosternal
Dx for Esophagitis to find out what type
Upper endoscopy
Chemical imbalance with 5HT and Ach
Abd pain- spasm
Altered gut microbiota
Early 20s, most common in F
IBS!!!
Rome IV Criteria for IBS
Recurrent abd pain at least 1 day per week for 3 months
associated with at least 2:
- related to BM
- change in stool frequency
- change in stool form