Gastroenterology Flashcards
Wilson’s disease lab findings
Low caeruloplasmin concentration
Hepatic, serum and urinary copper all raised
Sweating
Hunger
Weight gain
Low glucose
?cause
Insulinoma
Insulinoma (diagnostic test)
Prolonged (72h) fasting glucose levels
Loose stool/diarrhoea following resection of bowel (terminal ileum) for Crohn’s disease. Normal CRP/calprotectin
Cause?
Bile salt-induced diarrhoea
Bile salt-induced diarrhoea
Treatment?
Bile acid binders e.g. cholestyramine
Primary sclerosing cholangitis
linked to…
Linked to UC
Primary biliary cholangitis
Autoimmune condition
Middle-aged women
Pruritus
Fatigue
Artery supplying stomach -> where bile duct enters duodenum
Celiac trunk
Artery supplying duodenum (where bile duct enters) -> 2/3 across transverse colon
Superior mesenteric
Hypogonadotropic hypogonadism
Peri-anal dermatitis
Cognitive impairment
Alopecia
Hepatosplenomegaly
Zinc deficiency
Niacin deficiency symptoms
Pellagra
Diarrhoea, dermatitis, dementia
Mucosal, anogenital lesions
Carcinoid syndrome
Features
Flushing
Diarrhoea
Bronchospasm
Tricuspid stenosis
Pellagra
Carcinoid syndrome
Cause
Release of serotonin into systemic circulation from liver
Gastrin
Secreted by…
Secreted in…
Effects…
G cells
Antrum and duodenum
Increases gastric acid and intrinsic factor production production from parietal cells
Increases pepsinogen release from chief cells
Increases gastric motility
Cholecystokinin (CCK)
Secreted by…
Secreted in…
Effects…
I cells
Duodenum, ileum
Stimulates gallbladder contraction
Stimulates release of pancreatic enzymes
Relaxes sphincter of Oddi