Pharmacology Flashcards
(206 cards)
Symptoms of dyspepsia?
Upper abdominal pain (above the navel)
Belching
Nausea
Abdominal bloating
Ratio of duodenal to gastric ulcers?
Duodenal:gastric 4:1
Which type of peptic ulcer is worse?
A gastric ulcer as it may become malignant, a duodenal ulcer is normally benign
What are the risk factors for developing a peptic ulcer?
H.pylori infection - acid increase
Smoking, predisposition, stress - acid increase and less mucosal defence
NSAIDS - less mucosal defence
Symptoms of duodenal ulcers?
Weight gain
Relieved by milk/eating/rest/antacids
Symptoms of gastric ulcers?
Vomit/Melena
Upper abdominal pain
Weight loss/appetite loss/anaemia
Complications associated with gastric ulcers?
Haemorrhages
Peritonitis
Obstruction
Pain
Main reason for GORD occurrence?
Lower Oesophageal Sphincter not closing properly, and acid reflux into the oesophagus
Symptoms of GORD?
Belching Chronic sore throat Laryngitis Gum inflammation Bad breath Sour taste Pain on swallowing
Risk factors for GORD?
Caffein Chocolate Smoking Overweight Alcohol Tomato-based foods Spicy foods Mint flavouring Citrus fruits
Two examples of classes of drugs that inhibit acid secretion?
PPIs
Histamine receptor antagonists
An example of a class of drug that neutralises excess acid?
Antacids
Three examples of classes of drugs that protect the GI mucosa?
Prostaglandin analogue
Gel formers
Dopamine receptor antagonists
An example of a PPI?
Omeprazole
S/E of PPIs?
Interactions with warfarin may enhance the metabolism due to acting on the p450 enzyme
only omeprazole and pantoprazole
How long does one dose of PPI last, why?
24hrs as it is irreversible and the proton pumps have to be resynthesized
Two examples of histamine receptor antagonists?
Cimetidine and Ranitidine
Interactions of Histamine receptor antagonists?
May inhibit p450 enzyme of Warfarin/Theophylline
Examples of antacids?
Aluminium hydroxide
Magnesium trisilicate
Calcium
Sodium Bicarbonate
What S/Es of antacids are there?
Aluminium = constipation Magnesium = Diarrhoea
Risk of malabsorption when taken with other drugs
Example of a prostaglandin analogue?
Misoprostol
Examples of gel formers?
Bismuth subsalicylate
Sucralfate
S/E of Bismuth?
Greying of tooth enamel
Examples of dopamine receptor antagonists?
Domperidone
Metoclopromide