Gastroenterology Flashcards
What is dyspepsia?
Describes a range of upper gastrointestinal tract including epigastric pain/burning, nausea, heartburn and fullness
What is dysphagia?
Difficulty swallowing
Where are they vomiting centres located in the brain?
Medulla
Nausea and vomiting are most commonly associated with the GI system with concurrent abdominal pain.
But in the absence of abdominal pain, pathology of what other systems may cause nausea/vomiting?
Central nervous system (e.g. raised ICP)
Excess alcohol
Drugs (e.g. chemotherapy agents)
Metabolic disease (uraemia, diabetic ketoacidosis)
Persistent nausea/vomiting with no other symptoms may also be ________ in nature
Functional
Causes of dysphagia may be divided into what categories related to aetiology
Disorders of mouth and tongue
Oesophageal motility disorder
Extrinsic lesions (e.g. mediastinal glands or goitre)
Intrinsic lesions (strictures, foriegn body)
What is the definition of diarrhoea?
Increased amount of loose stool (stool weight >250g/day)
What is steatorrhoea?
Passage of pale, bulky and foul-smelling stools
What is the pathophysiology of steatorrhoea?
Fat malabsorption due to pancreatic/biliary pathology leads to increased fat in the stools.
Name a faecal marker of inflammation
Faecal calprotectin
Endoscopy is an essential investigation in the diagnosis of GI pathology. It can look at different parts of the GI tract. Name a few types of endoscopy
(6)
Oesophagogastroduodenoscopy (a.k.a. gastroscopy) Sigmoidoscopy (flexible or rigid) Colonoscopy ERCP Endoscopic ultrasound Capsule endoscopy
What is PET scanning used for in the investigation of GI pathology?
Staging of oesophageal, gastric and colorectal cancers
Outline the different types of contrast studies
Barium swallow - outline oesphagus
Barium meal - outline stomach and duodenum
Barium follow-through - outline small intestine
Outline the function of oesophageal physiology testing
Probes lowered into the oesophagus via the nose to measure:
- 24-hour monitoring of pH
- Volume reflux of gastric contents
What is oesophageal manometery?
Used for the investigation of oesophageal motility disorders
What is the most common type of non-infectious mouth ulcers?
Recurrent apthous ulcer
What are recurrent apthous ulcers?
Recurrent episodes of self-limiting, painful ulcers (rarely on the palate)
What treatment, if any, is indicated for recurrent apthous ulcers?
Topical corticosteroids for symptomatic relief
How does squamous cell carcinoma present in the oral cavity?
Painless ulcer, usually on the lateral borders of the tongue or floor of the mouth
If a patient presents with oral white patches in the mouth, what is the most impotant distinction to make in the history?
Are they transient or persistent
What is the most likley diagnosis with transient white oral patches?
Oral candida
What is the most likley diagnosis with persistent white oral patches?
Leucoplakia
What is leucoplakia?
Persisteny white patches in the oral cavity most storngly associated with smoking or alcohol consumption.
They are premalignant changes
What is glossitis?
Inflammation of the tongue.
Smooth, sore and red.
Most stongly assocaited with B12, folate or iron deficiency