GI SYSTEM Flashcards
How many people does GORD affect?
a) 1 in 5 weekly
b) 1 in 50 weekly
c) 1 in 500 weekly
d) 1 in 5000 weekly
a) 1 in 5 weekly
What causes it GORD and what is the common symptom?
inappropriate relaxation of the lower oesophageal sphincter so stomach acid can travel up
Heart burn is the common symptom
Which one of these is not a normal oesophageal defence?
a) surface bicarbonate buffer
b) epithelial cells blocking H+ absorption/cell damage
c) acid stimulates contraction
d) cilia secrete mucus buffer for rising acid
d) cilia secrete mucus buffer for rising acid
What condition is characterised by heartburn and regurgitation that is worse when lying down and when drinking hot liquids or alcohol?
GORD
Name 4 lifestyle-related risk factors for GORD
smoking large meals (fast food)/coffee, chocolate obesity alcohol stress
which drugs can aggravate GORD?
antimuscarinics
Ca channel blockers
Nitrates
NSAIDs
what autoimmune condition can predispose to GORD?
Systematic sclerosis
Name 2 physiological risk factors for GORD
pregnancy
hiatus hernia
What is the difference between a sliding and rolling(para-o) hiatus hernia?
Which is more common?
SLIDING - gastro-oesophageal junction and the stomach both displaced about the oesophageal hiatus = (80-90% of hiatus hernias)
ROLLING - GOJ same position but stomach above the diaphragm (much less common)
What common procedure would you use to diagnose GORD?
endoscopy
What 3 drugs might you give to treat GORD?
antacids
H2 receptor antagonists
PPIs
What complication of GORD results in intermittent dysphasia of solids?
Peptic stricture
What histological changes occur in Barrett’s oesophagus
Stratisfied squamous epithelium replaced by simple columnar epithelium that contains goblet cells (similar to lower GI tract)
What malignant neoplastic condition is associated with Barrett’s oesophagus?
adenocarcinoma of the esophageal
What condition often predisposes to Barrett’s oesophagus?
Hiatus hernia
Which type of peptic ulcer is most common?
a) duodenal
b) gastric
a) duodenal
what is the main cause of peptic ulcers in the developing world?
h pylori infection
how does h pylori damage gastric mucosa cells?
adheres to the mucosa cells and releases enzymes and apoptosis= binding to class 2 molecules
what drugs can cause peptic ulcers? Common in developed worl
NSAIDs (COX inhibitors)
What is Zolinger-Ellison syndrome?
Gastrin secreting tumour that causes recurrent peptic ulcer in distal duodenum and proximal jejunum
name three symptoms you could get with peptic ulcers
recurrent epigastric burning pain
nausea
anorexia
weight loss
What are the risk factors for peptic ulcers?
Nsaids overuse FHx H.pylori Zolinger-Ellisons syndrome alcohol smoking
What is the treatment for peptic ulcers
PPI & clarithromycin +( metronidazole or amoxicillin) = use the combination that doesn’t involve abx that has been previously used for another infection
Second line is quinolones
What is the invasive and non invasive test used to diagnose peptic ulcers?
Invasive =endoscopy &; biopsy Non invasive= Urea breath test = h..pylori serology= IgG antibodies Stool sample = H.pylori monoclonal antibodies