1b Gastrointestinal Infections Flashcards
Rapid onset watery diarrhoea for an elderly hospital patient with high CRP, inflammatory markers, creatinine and albumin. What is the most likely diagnosis?
C. Diff infection
What investigations should be done for a suspected C. Diff infection?
STOOL SAMPLE FOR C.DIFFICILE TOXIN
STOOL CULTURE
IMAGING AXR
What is the management plan for a patient with suspected C. Diff infection?
- Isolate the patient - move them to a side room
- Discontinue the antibiotics which are causing the C. Diff infection
- Management of diarrhoea, fluids and nutrition
What are the three levels of severity with C. Diff infections?
- Non-severe (WCC<15, Creat <150)
- Severe (WCC > 15, Creat >150)
- Fulminant Colitis - Hypotension or shock, ileus, toxic megacolon
What might patients experience if they have Fulminant Colitis?
Hypotension, Shock, ileus, Toxic megacolon
What is toxic megacolon?
When the colon enlarges as a result of C. Diff infection - can be seen on imaging
What is the treatment for severe C. Diff infection / Fulminant Colitis?
Antibiotics, supportive care, early surgical consultation
What is the treatment for non-severe C. Diff infection?
Antibiotic therapy with oral vancomycin, metronidazole
What is the treatment for fulminant colitis with toxic megacolon?
Medical therapy - antibiotics and supportive management
What are the indications for surgery with fulminant colitis with toxic megacolon?
Colonic perforation
Necrosis or ischaemia
Clinical signs of peritonitis
End - organ failure
What is pseudomembranous colitis?
Pseudomembranous colitis isinflammation (swelling, irritation) of the large intestine.
Often associated with C Diff infection
Manifestation of severe colitis disease
Characteristic white-yellow plaques form pseudomembranes on the mucosa
26 Female with long history of loose motions and PR bleeding and minimal tenderness in the left iliac fossa. Increased WCC and CRP indicating inflammatory process. What is most likely diagnosis?
Ulcerative colitis
What histology is seen in UC?
Left sided inflammatory change
Chronic inflammation with no granulomas
What is the difference between UC and Crohns?
UC: Limited to the mucosa, limited to the colon, pseudopolyps, bloody diarrhoea with mucus
Crohns: All layers of the gut wall, Entire GI Tract, Patchy lesions, Cobblestone appearance, non-caseating granulomas, bloody diarrhoea
What are the management options for UC?
Steroids
5-ASA
Immunosuppressants = Methotrexate, Aziothioprine
Biologics