Chapter 1- GI System Flashcards
Name 7 antibiotics that can cause C Diff infection
- Ampicillin
- Amoxicillin
- Co-amoxiclav
- 2nd gen cephalosporins
- 3rd gen cephalosporins
- Clindamycin
- Quinolones
Can all cause C Diff
Name three treatment options for C Diff
Metronidazole Vancomycin Fidaxomicin
Name two chronic inflammatory bowel diseases
Ulcerative colitis Crohn’s disease
Name three classes of drug used to treat inflammatory bowel diseases
Aminosalicylates Corticosteroids Immune response drugs
Name four aminosalicylates used in IBS
Balsalazide Mesalazine Olsalazine Sulfasalazine
Name four corticosteroids used in IBS
Hydrocortisone Beclometasone Budesonide Prednisone
Name four drugs used in IBS that effect the immune system
Ciclosporin Azathioprine Mercaptopurine Methotrexate
Name four monoclonal antibodies used in IBS
Infliximab Adalimumab Golimumab Vedolizumab
MOA of colestyramine and why is it used in IBS
Binds bile salts- can get loss of bile salt absorption in IBS
Abuse of laxatives can lead to what?
Hypokalaemia
Name 5 classes of laxatives
Bulk forming Stimulants Faecal softeners Osmotic laxatives Other
Stimulant laxatives can cause what?
Abdominal cramps
Which antacids are constipating
Aluminium containing
Which antacids are laxatives
Magnesium containing
How do you treat H.pylori
One week triple therapy: PPI Clarithromycin Amoxicillin or metronidazole
What’s the MHRA warning for PPIs?
Low risk of subacute cutaneous lupus erythematosus
Why can antimuscarinics/anticholinergics be used in IBS?
They reduce intestinal motility
What is diverticular disease?
Where the diverticula (sac-like protrusions of mucosa through the muscular colonic wall) cause intermittent lower abdominal pain in absence of inflammation/infection
What is diverticulitis?
When the diverticula become inflamed and infected
True or false: peppermint oil can irritate the mouth or oesophagus
TRUE so don’t chew or break the capsules
When are bulk forming laxatives appropriate?
When the diet is deficient in fibre
When are stimulant laxatives appropriate
To increase intestinal motility
How does linaclotide work
Increases intestinal fluid secretion and transit, and decreases visceral pain
How do antimotility drugs work
Bind to opioid receptors in the GI tract and therefore prolong the duration of intestinal transit
Name two potentially carcinogenic stimulant laxatives
Co-danthramer Co-danthrusate
What laxative can be used to treat hepatic encephalopathy and why
Lactulose- it discourages the proliferation of ammonia-producing organisms
Why are bismuth containing antacid products (unless chelates) not recommended
Absorbed bismuth can be neurotoxic, causing encephalopathy; they can be constipating
Calcium containing antacids can induce what?
Rebound acid secretion
Prolonged high doses of calcium containing antacids can cause what
Hypercalcaemia and alkalosis and can precipitate the milk-alkali syndrome
What is simeticone
Activated dimeticone is added to an antacid as an antifoaming agent to relieve flatulence