Abdo core conditions Flashcards
Which drugs are a risk factor for reflux
(3) ?
Antimuscarinics, Ca blockers and nitrates
what are the risk factors for reflux? (5)
Pregnancy fatty food, alcohol, chocolate obesity achlaasia hiatus hernis
What aggravates the pain in reflux?
lying down/ bending over
Drinking what makes reflux worse?
alcohol or hot drinks
What is the word for pain on swallowing ?
odynophagia. You get this with reflux
what investigations would you do in reflux?
Upper GI endoscopy
Intraluminal monitoring
What results would you need to get in intraluminal monitoring for it to count as excessive reflux?
pH<4 for >4% of the time
What drugs would you treat reflux with?
Alginate- containing antacids (magneisum trisiclate or gaviscon)
Prokinetic agents- metocloperamide
h2-receptor anatgonists: cimetidine
PPI- omeprazole
What do you use Prokinetic agents for? Give an example
Reflux, increase gastric emptying
metocloperamide
What do you use H2-receptor anatgonists for? Give an example
Reflux, acid suppression
cimetidine
What surgery do you use in reflux?
Nissen Fundoplication
where is the pain in reflux?
Burning retrosternal pain
What is the definition of an ulcer?
A breach in the epithelium that penetrates the muscularis mucosae
What are the main causes of peptic ulcers?
H.pylori infections, NSAIDs} most common
Rare: Zollinger-Ellison syndrome
Crohn’s disease
How does a H.pylori infection cause stomach ulcers?
Causes inflammation of mucosal lining therefore depleting the alkaline mucosa
Also impairs the cells that produce somatostatin which limits the secretion of gastric acid
What are the 4 main risk factors for peptic ulcers?
NSAIDs, smoking, aspirin, alcohol
Where is the pain in peptic ulcers? And where does it radiate?
Burning epigastric pain
radiates up to the neck, down to the umbilicus or to the back
Aside from pain what are the other symptoms of peptic ulcer?
Indigestion
heartburn
weightloss and loss of appetite
nausea
How does food affect gastric ulcer pain?
It makes it worse
It improves duodenal ulcer pain
What are the 3 tests for H.pylori?
Urea breath test
stool antigen test
Laboratory serology testing
What are the criteria for being able to have a urea breath test or stool antigen test?
Can’t have had PPI in the past 14 days or antibiotics in the past 28 days
How do you treat peptic ulcers due to NSAIDs?
1) Stop NSAIDs
2) If no H.pylori give a full dose of PPI for 1 or 2 months
3) If H,pylori present give PPI for 2 months them prescribe eradication therapy.
4) Retest for H.pylor 4-6weeks later
5) repeat endoscopy 6-8weeks after treatment
If PPI isn’t sufficient in peptic ulcers what do you give?
H2-receptor anatgonists e.g. cimetidine
How do you treat peptic ulcers due to H.pylori?
7 day triple therapy regimen with twice daily dosing
What are the options for eradication therapy of H.pylori in peptic ulcers?
1) Amoxicillin + clarithromycin + PPI e.g. lansoprazole, omeprazole or pantoprazole
2) Clathrithromycin + metronidazole + PPI
(If they’ve been treated with clarithromycin or metronidazole within the last year then use the other to prevent resistance)
What is the second course of eradication of H.pylori in peptic ulcers?
Antibiotics previously given
for 14 days as quadruple therapy
what is the most common cause of an upper GI bleed?
Peptic ulcer disease
What are the causes of an upper GI bleed? (10)
1- peptic ulcer disease 2-oesophageal varices- due to liver cirrhosis and cancer 3-oesophageal inflammation 4- mallory Weiss tears 5- angiodysplasia 6- NSAIDs 7- COX-2 inhibitors 8- Oesophagitis 9- Duodenitis 10- Malignancy
What are the risk factors for an upper GI bleed? (7)
age heart failure IHD renal disease Liver disease malignant disease ulcer
What is the scoring system for upper GI bleeds?
Rockall from 0-8+
What are the main signs and symptoms of a GI bleed? (5)
Dyspepsia (pain) haematemesis haematochezia- bright red blood in stool, massive volume loss Melena shock
What are the signs of shock? (8)
Dizziness SOB pale skin loss of consciousness peripherally shut down- cool and clammy, slow cap refill poor urine output (<25ml/h) tachycardic >100bpm hypotensive
What causes massive lower GI bleeds? (2)
These are rare
diverticular disease
ischaemic colitis
What causes small lower GI bleeds?(5)
haemorrhoids anal fissures IBD Crohn's Cancer
What investigations do you do in a lower GI bleed?
Protoscopy
flexible sigmoidoscopy
colonoscopy
angiography
What do you use protoscopy for?
Lower Gi bleeds- haemorrhoids
for anus, anal canal, rectum and sigmoid colon
What do you use flexible sigmoidoscopy or colonoscopy for?
Lower GI bleeds due to IBD, cancer, ischaemic colitis, diverticular disease or angiodysplasia
Is crohn’s continuous or discrete?
Discrete- it has skip lesions
Where in the GI tract does Crohn’s affect?
Anywhere from the mouth to the anus
How much of the intestinal wall is affected in Crohn’s?
the FULL thickness
in UC it’s only the mucosa
What are the risk factors for Crohn’s? (5)
Smoking Family history appendectomy NSAIDs oral contraceptives (small)
When does crohn’s commonly present?
adolesence and early adulthood
Is crohn’s more common in men or women?
M=F
What are the GI symptoms of Crohn’s (12)
1- Diarrhoea- may be nocturnal, may have urgency, may have tenesmus 2- Blood or mucus in stool 3- abdominal pain 4- history of similar episodes 5- weight loss 6- anorexia 7-fatigue 8-fever 9- malabsorption 10- mouth ulcers 11- anal or perianal skin tag 12- fistula or abscess
Where does abdominal pain typically present in Crohn’s?
In the right lower quadrant
A mass may also be felt
What are the extra-intestinal manifestations of Crohn’s?(6)
Irits Post-articular arthrtitis erythema nodosum apthous ulcers pyoderma gangrenosum episcleritis
With what condition do you get post-articular arthritis?And what are it’s signs?
Crohn’s
affects fewer than 5 large joints
usually asymmetrical
self-limiting and acute
what is erythema nodosum associated with?
And what are it’s signs?
Crohn’s
Tender, red/violet subcutaneous nodules
usually on anterior tibial or extensor surfaces of legs/ arms
What investigations do you do in Crohn’s? (6)
FBC- assess for anaemia due to blood loss, malabsorption or malnutrition CRP and ESR U&Es LFTs stool microscopy and culture tissue transglutaminase
When should people with Crohn’s be treated as an emergency?
If they have bloody diarrhoea and fever or tachycardia
Why shouldn’t you offer anti-diarrhoeals to people with unconfirmed crohn’s?
If it turns out they have UC then anti-diarrhoeals can precipitate toxic megacolon
What lifestyle change should people with Crohn’s make?
stop smoking
What are the drug options in Crohn’s? (4)
Corticosteroids
Immuno-Suppressants: azathioprine, mercaptopurine and methotrexate
^ or cytokine-modulating drugs: infliximab and adalimumab
Aminosalicylates- mesalazine and sulfasalazine
What immunosuppressants can be used in Crohn’s? (3)
Azathioprine
mercaptopurine
methotrexate
What can you use instead of immunsuppressants in Crohn’s?
Cytokine-modulating drugs
Infliximab
adalimumab
What aminosalicylates can be used in Crohn’s?
Mesalazine and sulfasalazine
What do you offer adolescents or children who are failing to grow due to Crohn’s?
Enteral nutrition
What are the complications of Crohn’s? 8
Intestinal strictures abscess fistulas- peri-anal, bladder and vagina anaemia malnutrition growth failure colorectal and small intestine cancers metabolic bone disease- osteopenia, osteoporosis and osteomalacia
Where does UC affect?
The mucosa of the rectum and variable lengths of the colon
Where does Ulcerative proctitis (subtype of UC) affect?
Inflammation is limited to the rectum
Where does Left-sided colitis (subtype of UC) affect?
inflammation affects rectum and doesn’t extend proximally beyond the splenic flexure
Where does extensive colitis/ pan colitis (subtype of UC) affect?
Inflammation extends beyond splenic flexure to affect entire colon
What are the risk factors for UC? 3
Oral contraceptives
FH
Not smoking
When is the peak incidence of UC?
15-25 years
smaller peak 55-65
What are the GI symptoms of UC? 7
1- bloody diarrhoea for more than 6 weeks or rectal bleeding
2- faecal urgency
3- nocturnal defecation
4- tenesmus
5- abdominal pain
6- pre-defecation pain, relieved on passing stool
7- severe may –> malaise and fever, weight loss, faltering growth
Where is the pain in UC?
Left lower quadrant
Crohn’s is on R
What are the extra-intestinal symptoms of UC? 7
1- anaemia 2-pauci-articular arthritis 3- erythema nodosum 4-apthous ulcers 5-episcleritis 6- pyoderma gangrenosum 7- hepatobiliary conditions; primary sclerosing cholangitis, pericholangitis, steatosis, chronic hepatitis, cirrhosis and gallstones
What investigations do you do in UC? 7
FBC CRP and ESR U&Es LFTs Tissue transglutaminase stool microscopy and culture Faecal calprotectin
What would LFTs show in UC?
Reduced albumin, which suggests hypoproteinaemia due to malabsorption or intestinal losses
Why do you test tissue transglutaminase in UC and crohn’s?
to rule out coeliac disease
What bugs would you request testing for in a stool microscopy and culture for UC? 3
C-dif toxin
campylobacter
E.Coli O157
Why do you test faecal calprotectin in UC?
to distinguish IBS and IBD, will be raised in IBD
What is the first treatment option for mild or moderate UC?
Aminosalicylates (5-ASAs)
suphalazine
mesalazine
When do you use corticosteroids in UC?
With or instead of 5-ASAs for flare ups if 5-ASAs aren’t enough
prednisolone
What 3 drug types can you use to induce remission in UC?
Aminosalicylates
corticosteroids
immunosuppressants
What do you use immunosuppressants for in UC? and which ones?
Mild to moderate flare-ups
or to induce remission if other meds haven’t worked
tacrolimus
azathioprine
What is the downside of immunosuppressants in treating UC?
They take a while to work
usually 2-3 months
What immunosuppressant do you use to treat severe flare ups of UC?
ciclosporin
stronger and faster than the others (tacrolismus and azathioprine)
given IV
How do you treat severe flare ups of UC?
1- ciclosporin If that doesn't work: Biologic medications: infliximab adalimumab golimumab vedolizumab
What are the surgical options for UC?
Colectomy
May have an ielostomy–> stoma bag
or an ileo-anal pouch–> allows stool to pass normally
What are the complications of UC? (4)
Toxic megacolon
colorectal cancer
venous thromboembolism
osteoporosis
What age range is IBS most common in?
20-30year olds
Is IBS more common in males or females?
F>M
What is abdominal pain associated with in IBS?
Either relieved by defecation
or associated with altered bowel frequency or altered stool form
Aside from abdominal pain what are the other common symptoms of IBS? 4
1- altered stool passage:straining, urgency or incomplete evacuation
2- abdominal bloating, distension, tension or hardness
3- symptoms made worse by eating
4- passage of mucus
What are the first line drug treatment options for IBS? 3
Antispamodic- meververine, alverine or peppermint oil
Laxatives - bulk forming ones are preferred e.g ispaghula or sterculla
antimotillity drugs e.g. loperamide
If IBS symptoms don’t repsond to first line treatment options what can you give?
Low dose tricylcic antidepressant
e.g. amitriptyline
at night
What classifies as acute diarrhoea?
three or more episodes lasting for less than 14 days
What classifies as persistent diarrhoea?
lasts for more than 14 days
What is dysentery?
loose stools, with blood and mucus, often with pyrexia and abdominal cramps
What organisms cause bloody diarrhoea? 5
Campylobacter Entamoeba histolytica E.Coli Salmonella serotypes shigella
Is gastroenteritis caused most commonly by bacteria, virus or parasites?
Virus
What is the most common cause of infantile gastroenteritis?
rotavirus
Transmitted by faecal oral route
worse nov-apr
what is the most common cause of gastroenteritis in adults?
Norovirus
What are the bacterial causes of gastroenteritis? And where are they picked up from? (5)
Campylobacter- undercooked meat (esp poultry), unpasteurised meat or untreated water
E.Coli- food, faecal-oral and animals
Salmonella- animal or human faeces contaminated environment, food or water. Food: red and white meat, raw eggs, milk and dairy
Shigella- drinking water contaminated with human faeces and food washed in infected water
(more common in young children)
Yersinia enterocolitica- rare
What are the parasitic causes of gastroenteritis? And where are they picked up from? 3
Crytopsporidium- animal-human, human-human
Entamoeba histolytics- food or water contamination
Giardia- direct contact with infected animals or humans, consumption of infected food or water.
associated with foreign travel
What are the symptoms of gastroenteritis caused by toxins?
rapid onset diarrhoea and vomiting which usually lasts for less than 12 hours
Which bacteria produce toxins that causes gastroenteritis? 3
Staph aureus- found in cooed meats and cream products
bacilus cereus- reheated rice
clostridium perfingens- reheated meat dishes or cooked meats
what are the symptoms of a rotavirus gastroenteritis? 3
Starts with fever and vomiting followed by water diarrhoea
lasts 3-8 days
What are the symptoms of norovirus gastroenteritis? 5
nausea followed by watery diarrhoea
vomiting, raised temperature and aching limbs may be present
How long do the symptoms of rotavirus gastroenteritis last?
3-8 days
How long after infection does it take for norvirus to present?
24-48hours
How long do the symptoms of norovirus last?
12-60 hours
What are the symptoms of campylobacter? 5
diarrhoea- may be bloody nausea vomiting cramping abdominal pain fever
What are the symptoms of E.coli infection?2
abdominal cramps
diarrhoea - normally mild and self limiting
(may progressive to haemorrhagic colitis- bloody diarrhoea in infants or elderly- can be fatal)
Which bacteria can cause haemorrhagic colitis? and what can it lead to?
E.coli
Haemolytic uraemic syndrome (HUS)
What are the symptoms of salmonella?6
Water and sometimes bloody diarrhoea abdominal pain headache nausea vomiting fever
What are the symptoms of shigellosis? 2
Diarrhoea- often with blood and mucus= dysentery
abdominal cramps
What are the symptoms of crytosporidium? 6
water diarrhoea stomach cramps dehydration nausea and vomiting fever weight loss
what are the symptoms of giardia infection? 8
diarrhoea (acute and chronic- can last 2-6weeks) malabsorption weight loss abdominal pain annorexia flatuence bloating nausea (vomitting and fever are uncommon)
What are the criteria for carrying out a stool sample? 6
1- the person is systemically unwell
2- there is pus or blood in the stool
3- immunocompromised Px
4- history of recent hospitalisation or Abx rx
5- Diarrhoea post travel to anywhere other than western Europe, North America, Australia or New Zealand
6- Diarrhoea is peristent and giardiasis is suspected
Do you give Abx to adults with diarrhoea of unknown pathology?
NO
how do you treat amoebiasis (caused by entamoeba histolytica)?
Metronidazole 3/day for 5-10 days
followed by diolxamide 3/day for 10 days
How and when do you treat campylobacter?
When: the symptoms are severe, immuncompromised patient or symptoms >7days
How: erythromycin 4/day 5-7 dyas
or ciprofloxacin if allergic to macrolides
How do you treat E.Coli?
NO abx
entirely supportive
Avoid antimotillity drugs and NSAIDs
How do you treat giardiasis?
metronidazole
When and how do you treat salmonella?
When: >50yrs, immunocompromised, have cardiac valve disease or endovascular abnormalities e.g. prosthetic vascular grafts
How: ciprofloxacin 2/day for 1 day
When and how do you treat shigellosis?
When: severe disease, immunocompromised, bloody diarrhoea
How: ciprofloxacin, azithromycin
Don’t prescribe antimotillity drugs
What are the complications of gastroenteritis ? 6
1- dehydration and electrolyte disturbances
2-Guillain Barre syndrome
3- malnutrtion
4-IBS
5- aquired or secondary lactose intolerance
6- reduced drug absorption
What organisms cause reactive complications of gastroenteritis? 4
salmonella
campylobacter
Yersinia enterocolictica
shigella
What are the reactive complications of gastroenteritis?
arthtis carditis urticaria erythema nodosum conjunctivitis Reiter's syndrome= urethritis, arthritis and uveitis
What is a complication of rotavirus?
toxic megacolon (rare)
What are complication of salmonella? 2
Septicaemia
focal infections e.g. septic arthritis
What is a complication of shigella?
haemolytic uraemic syndrome
What causes acute pancreatitis? 2
Gallstones
alcohol missuse
What are the risk factors for acute pancreatitis?8
1- endoscopic procedures
2- surgery near the pancreas e.g gastric surgery, splenectomy, biliary tract procedures
3- metabolic- hypertriglyceridaemia, hypercalcaemia
4- Infections- mumpc, coxsackie B4 virus, mycoplasma pneumonia infection
5- Drugs; thiazide diuretics, azathiorpine, tetracyclines, oestrogens, valproic acid and dipeptidylpeptidase-4-inhibitors
6- anatomical or functional disorders
7- autoimmune: SLE, Sjorgen’s
8- Pancreatic adenocarcinoma
Where is the pain in acute pancreatitis?
epigastric region
may radiate to the back (less commonly to the chest or flanks)
What makes the pain better and worse?
Worse: movement
Better: foetal position