IBS, Diverticular disease & Harmorrhoids Flashcards
What is IBS (3)
- Irritable Bowel Syndrome
- An abnormally sensitive condition characterised by a set of associated symptoms
- Abnormally high sensitivity to natural stimuli: Foods/stress leading to symptoms
What are the main symptoms of IBS (7)
- Abdominal pain/discomfort
- Bloating
- Changes in bowel habit - Diarrhoea or constipation
- mucous in stool
- incomplete evacuation
- Episodes may last days to weeks
- Recur over a long period of time
What risk factors may sensitise the gut (3)
- Gastroenteritis
- Traumatic/upsetting event
- Antibiotics
what can sensitisation of the gut lead to (3)
- Stimulation of gut immune system
- Mild inflammation
- Dysbiosis (depletion of colonic bacteria)
what are the triggers of an IBS flare-up (6)
- Familial link, may be genetic or environment = similar gut bacteria
- Diet and stress most common triggers for a flare up
- Not linked to any serious disease development
- Not linked to any excess death
- 10-20% prevalence
- female to male ratio = ~2.5:1
What are the red flag symptoms of IBS (4)
- Bleeding - Regular rectal bleeding not from Haemorrhoids
- Weight loss - more than 1/2 stone (3 kg) for no reason
- Persistent Fever
- Bowel change - Ongoing change for no reason - Particularly if over 50y/o- bowel cancer risk
What tests are there for IBS (5)
- FBC
- erythrocyte sedimentation rate (ESR)
- C-RP
- antibody for coeliac
- GP diagnosis would rule out bowel cancer, coeliac and IBD leading to cause being IBS
What is the NICE criteria for abdominal discomfort (5)
- Relieved by defaecation OR Associated with altered bowel movements or stool form
And at least two of:
- Altered stool passage
- Abdominal bloating
- Symptoms worse after eating
- Passage of mucus
What is the Rome criteria for abdominal discomfort (5)
- Recurrent abdominal discomfort at least 3 days a month in past 3 months
with two of:
- Relieved by defaecation
- Altered bowel movements
- Altered stool form
- Affected for at least 6 months
How is diet considered with IBS management (4)
- Food allergy rare, must be ruled out (<3%)
- Food intolerance, common, work them out → food/symptom diary
- NICE dietary recommendations
- If NICE fails & under dietician can use FODMAP diet
what are the common IBS flare-up foods (7)
- Coffee
- fizzy drinks
- alcohol
- dairy - particularly cheese
- refined grains (not whole grains)
- high protein diets
- processed foods (e.g. crisps, chips and biscuits)
What are the NICE dietary recommendations for IBS (9)
- Have regular meals and take time to eat
- Drink at least 8cups of fluid per day, ↑ water ↓caffeinated drinks
- Restrict tea and coffee to 3 cups per day
- Reduce intake of alcohol and fizzy drinks
- Limit intake of high‑fibre food
- Reduce intake of digestion ‘resistant starch’ (reaches the colon intact), which is often found in processed or re‑cooked foods
- Limit fresh fruit to 3 portions per day (a portion should be approximately 80g)
- Diarrhoea → Avoid sorbitol (artificial sweetener found in sugar‑free sweets)
- Wind and bloating → eat oats (such as oat‑based breakfast cereal or porridge) and linseeds (up to 1tablespoon per day)
what is FODMAP (8)
- Fermentable
- Oligosaccharides
- Disaccharides
- Monosaccharides
- And
- Polyols
- Poorly absorbed simple and complex sugars (carbohydrates) that reach the colon.
- When in colon: Osmotically draw water in & rapidly fermented by bacteria, releasing gas leading to Bloating, abdominal pain and diarrhoea
What foods are suitable on the low FODMAP diet (5)
- fruit (banana, berries, grapes, oranges, etc…)
- Vegetables (carrot, celery, ginger, green beans, etc..)
- grain foods
- lactose-free milk, hard cheese, brie, ice-cream substitutes
- tofu, sweeteners not ending in ol, honey substitutes
What foods are unsuitable for the low FODMAP diet (5)
- Apple, mango, pear, tinned fruit in natural juice, watermelon, fructose, honey
- milk, cheeses (products containing lactose)
- vegetables containing fructans (asparagus, beetroot, Brussels), cereals
- legumes containing galactan (baked beans, chickpeas, kidney beans)
- apples, apricots, avocado, mushrooms, sweetcorn, sweeteners
How is IBS abdominal pain pharmacologically managed (3)
- Mebeverine - 135 mg TDS, 20 minutes before food
- Hyoscine BUTYLbromide (Buscopan) - 10 mg TDS
- Peppermint oil Colpermin - 1-2 capsules TDS (swallow whole)
How is IBS constipation pharmacologically managed (3)
- Senna (S laxative) - 7.5-15 mg ON
- Movicol (O laxative) - 1 sachet up to three times a day
- Ispaghula husk (BF laxative) - 1 sachet BD
How is IBS diarrhoea pharmacologically managed
Loperamide - 4-8 mg in divided doses (max 16 mg/24hours)
What is the second line pharmacological management of IBS (5)
- if antispasmodics/ laxatives/antidiarrhoeals failed:
- 1st line: Tricyclic antidepressants (TCAs) e.g. Amitriptyline 5-10mg ON and increase to 30mg ON
- 2nd line: Selective serotonin reuptake inhibitors (SSRIs) e.g. Citalopram, Fluoxetine, paroxetine
- Finally try cognitive behavioural therapy (CBT) or/ & hypnotherapy for people with IBS who do not respond to pharmacological treatments after 12months and who develop a continuing symptom profile
- those who wish to purchase and try probiotics need to do so for a minimum of 4/52 (4 weeks)
What is Diverticular disease (3)
- Small bulges or pockets (diverticula) develop in the lining of the large intestine
- 80% with disease asymptomatic → diverticulosis
- Common symptoms of the disease are abdo pain and bloating
What are the pre-disposing factors of diverticular disease (3)
- Age 50-70 y/o (intestine becomes weaker with age, pressure of hard stools causes the bulges to form
- Low fibre diet
- Westernised countries
what is diverticulitis (4)
- pockets become infected, known as diverticulitis.
Then serious symptoms
- pyrexia
- severe abdo pain
- diarrhoea
How is Diverticular disease diagnosed (2)
- Often made based on symptoms
- gold standard – colonoscopy or CT scan
What is the differential diagnosis of diverticular disease (what else could it be?) (3)
- IBD
- IBS
- bowel cancer