GI Block 2! Flashcards
(421 cards)
Anoscope is used to eval what?
Clinical eval of anal canal (is not for hemorrhoids fissures and lesions)
Sigmoidoscopy allows you to look where?
Further into Rectum at polyps
Flex Sigmoidoscope allows you to look and do what, where?
Take biopsy of large intestine from rectum to sigmoid colon with a light source
Reqs bowel prep
The left side of the colon contains what?
75% of cancers
Colonoscopy is?
Study of choice
100% of view of colon and distal small intestine(terminal ileum)
Uses a light source reqs bowel pre
CT Colonography is?
3D Image Eval of colon prox to lesion
Used for failed colonoscopy eval colon pros to lesion cancer screen in pts w contra to endoscope or refuse
Barium Enema is = to
Lower GI Series
Most common cause of C. Diff infxn?
Hosp Acq— Fecal to Oral or Contact of spores on surfaces(up to 5 months)
Risk factors for C.diff
ABX use
Hospitalization
Advanced Age
Medication induced C Diff. risks: Highest—Intermediate—Lowest
Highest—Clindamycin, Flouroq.,Cephalosporins
Int—Penicillin, Macrolide, Sulfonamide
Lowest—Tetracycline
C. Diff presentation
Green/fowl smelling, watery diarrhea, cramp lower abdomen
Fulminant colitis presentation
Fever Hemodynamic ABD Distention Pain and Tender and profuse and diminished diarrhea X 15 times a day
PE C.diff
Assess for systemic illness, fever, tachy, HYPOTN, dehydration,
Peritoneal signs, Rebound guarding
Stool Studies C.diff infxn
Glutamate Dehydrogenase (GDH)
Nuclei Acid Amp Tests(NAAT)
Rapid Enzyme Toxin Assay(EIA)
Cell Culture cytotoxic assay/toxigenic culture[GOLD STANDARD]
What is the initial screening study of C.diff
GDH/PCR
What confirms C. Diff/Active Toxin?
Rapid EIA to determine Toxin A or B
What test is used to determine C.diff vs Pseudocolitis?
Colonoscopy
Severity of infxn is determined by what criteria(3)?
NONSEVERE = WBC < OR EQUAL 15,000 w/ creatinine < 1.5
SEVERE = WBC > OR EQUAL 15,000 w/ creatinine > 1.5
FULM DZ = WBC > 30,000 ALBUMIN > 2.5 Lacatate/Creatinine HYPOTN/ SHOCK/ILEUS/MEGACOLON
First Line treatment for Pharmacotherapy for C. Diff (3)
Fidaxomicin
Vancomycin
Metronidazole
Fulminant Colitis TXM
Vancomycin and Metronidazole w surgery consult for colectomy
Recur TXM 1st recur
C diff infxn
Fadaxomycin + Vancomycin X 10 days
Recur TXM 2nd recur
C diff INFXN
Vancomycin by mouth 10 days
Recur TXM 3rd recur
Fecal transplant
Toxic megacolon occurs at what diameter dilation with what signs?
Signs of sepsis
Greater than 7cm