GI Flashcards
Acute and Chronic causes of diarrhoea?
Acute:
* Gastroenteritis
* Nectrotizing entercolitis
* Intusseseption
* Volulus
Chronic
* Toddlers Diarrhoea
* Coeliacs
* IBD
* Allergies- non IgE mediated
A toddler presents with diarrhoea. What are your differentials?
- Gastroenteritis
- Any infection e.g. viral URTIs, Chest infections, otitis media, UTI
- Antibiotic use
Chronic:
Lactose intolerance
Toddlers diarrhoea
A 4 year old presents with diarrhoea. What are your differentials?
- Toddlers diarrhoea
- Parasites
- Overflow dirrhoea in constipation
- Lactose intolerance
- Coeliac disease
- Cystic fibrosis
13 year old presents with diarrhoea. What are your differentials?
- Coeliacs disease
- Lactose intolerance
- IBD
- IBS
- Psychosocial- anxiety
Main complication of diarrhoea in young children and babies?
- Dehydration
Causes of dehydration?
- Inability to drink e.g. tonsillitis
- Excessive sweating: high fever, hot climate, cystic fibrosis
- Vomiting: Pyloric stenosis, viral infections, gastroenteritis
- Acute diarrhoea: viral/ bacterial gastroenteritis, food poisoning, antibiotics, any acute infection
- Burns
- Post surgery
- Polyuria- diabetes mellitus, diabetes insipidus
Signs of severe dehydration in a baby/ child ?
- Sunken fontanelle- baby
- Sunken eyes
- Dry lips and mouth
- Thirst +++
- Tachycardia
- Delayed cap refill time
- Reduced skin turgor
- Reduced urine output
- Weight loss
What is Coeliacs disease?
- Autoimmune condition caused by sensitivity to protein in gluten
- Repeated exposure leads to villous atrophy–> malabsorption
What conditions are associated with Coeliacs?
- dermatitis herpetiformis
- Autoimmune disorders e.g. T1DM and autoimmune hepatitis
What genes are associated with Coeliacs?
- HLA-DQ2
- HLA-DQ8
Complications of Coeliacs disease?
- anaemia: iron, folate and vitamin B12 deficiency (folate deficiency is more common than vitamin B12 deficiency in coeliac disease)
- hyposplenism
- osteoporosis, osteomalacia
- lactose intolerance
- enteropathy-associated T-cell lymphoma of small intestine
- subfertility, unfavourable pregnancy outcomes
- rare: oesophageal cancer, other malignancies
When should you think about investigating for Coeliacs disease?
NICE 2009- suggested
Signs and symptoms:
* Chronic or intermittent diarrhoea
* Failure to thrive or faltering growth in children
* Persisten or unexplained GI symptoms incl N&V
* Prolonged fatigue
* Reccurent abdo pain, cramping or distension
* Sudden or unexpected weight loss
* Unexplained iron- deficiency anaemia, or other unspecified anaemia
Conditions
* Autoimmune thyroid disease
* Dermatitis herpetiformis
* IBS
* Type 1 diabetes
* First degree relatives with coeliacs
What investigations would you do for coealiacs?
Serology:
* tissue transglutaminase (TTG) antibodies (IgA) are first-choice according to NICE
* endomyseal antibody (IgA)
needed to look for selective IgA deficiency, which would give a false negative coeliac result
* anti-casein antibodies are also found in some patients
Endoscopic intestinal biopsy- duodenum, usually in children you use jejunal biopsy showing subtotal villous atrophy
May see the following:
* Crypt hyperplasia
* Increase in intraepithelial lymphocytes
* Lamina propria infiltration with lymphocytes
* anti-gliadin antibody (IgA or IgG) tests are not recommended by NICE
Management of Coeliacs?
- Gluten- free diet
- Patients with coeliac disease often have a degree of functional hyposplenism-all patients with coeliac disease are offered the pneumococcal vaccine
- Coeliac UK recommends that everyone with coeliac disease is vaccinated against pneumococcal infection and has a booster every 5 years
- Currrent guidelines suggest giving the influenza vaccine on an individual basis.
What contains gluten?
- wheat: bread, pasta, pastry
- barley: beer
- whisky is made using malted barley. Proteins such as gluten are however removed during the distillation process making it safe to drink for patients with coeliac disease
- rye
- oats- although GF, some react to them, also usually made in factory that is not GF so cannot have
rice
potatoes
corn (maize)
are GLUTEN FREE
Acute and Chronic causes of constipation?
Acute:
* Dehydration
* Bowel obstruction
Chronic
* Functional constipation
* Hirschsprung’s disease
* Secondary to other conditions e.g. hypothryroidism, coeliac disease, CF
Idiopathic is the most common cause
Signs of constipation in children < 1 year old ?
Stool pattern:
* Fewer than 3 complete stools per week (type 3 or 4 on Bristol Stool Form Scale) (this does not apply to exclusively breastfed babies after 6 weeks
of age)
* Hard large stool
* ‘Rabbit droppings’ (type 1)
Symptoms associated with defecation
* Distress on passing stool
* Bleeding associated with hard stool
* Straining
History
* Previous episode(s) of constipation
* Previous or current anal fissure
Presentation of constipation of child > 1 year?
Stool Pattern:
* Fewer than 3 complete stools per week (type 3 or 4)
* Overflow soiling (commonly very loose, very smelly, stool passed without sensation)
* ‘Rabbit droppings’ (type 1)
* Large, infrequent stools that can block the toilet
Symptoms associated with defecation:
* Poor appetite that improves with passage of large stool
* Waxing and waning of abdominal pain with passage of stool
* Evidence of retentive posturing: typical straight-legged, tiptoed, back arching posture
* Straining
* Anal pain
History
* Previous episodes of constipation
* Previous or current anal fissure
* Painful bowel movements and bleeding associated with hard stools
What points to idiopathic constipation as opposed to more serious condition?
Think Timing, Growth and Diet
Timing:
* starts after a few weeks of life
* Obvious precipitating factor e.g. fissure, change of diet, timing of potty/toilet training or acute events such as infections, moving house, starting nursery/school, fears and phobias, major change in family, taking medicines
Passage of meconium < 48 hours
Growth:
* Generally well, weight and height within normal limits, fit and active
Neuro/locomotor
* No neuro problems in legs and normal locomotor development
Diet:
* Changes in infant formula
* Weaning
* insufficient fluid intake or poor diet
Red flags in children with constipation?
Timing:
* Reported from birth or first few weeks of life
Failure to pass meconium w/in <48 hours
Stool pattern:
* Ribbon stools
Growth:
* faltering growth is amber flag
Abdomen:
* Distension (+/- vomiting)
Other:
* Disclosure or evidence that raises concerns over possibility of child maltreatment
What is a necessity to assess for in a child with constipation?
FAECAL IMPACTION
Suggestive features incl:
* symptoms of severe constipation
* overflow soiling
* faecal mass palpable in abdomen
Managment of constipation if there is faecal impaction?
- polyethylene glycol 3350 + electrolytes (Movicol Paediatric Plain) using an escalating dose regimen as the first-line treatment
- add a stimulant laxative if Movicol Paediatric Plain does not lead to disimpaction after 2 weeks
- substitute a stimulant laxative singly or in combination with an osmotic laxative such as lactulose if Movicol Paediatric Plain is not tolerated
- inform families that disimpaction treatment can initially increase symptoms of soiling and abdominal pain
Conservative management of constipation in children?
- Reward charts e.g. star charts
- Increased dietary fibre
- Adequate hydration/fluids
Treatment of constipation (w/o faecal impaction)
- first-line: Movicol Paediatric Plain
- add a stimulant laxative if no response
- substitute a stimulant laxative if Movicol Paediatric Plain is not tolerated. Add another laxative such as lactulose or docusate if stools are hard
- continue medication at maintenance dose for several weeks after regular bowel habit is established, then reduce the dose gradually
- DR LUYT: duration for the same as symptoms have been there e.g. 3 weeks of symptoms- 3 weeks of treatment
How to treat children < 6 mnths for constipation?
- bottle-fed infants: give extra water in between feeds. Try gentle abdominal massage and bicycling the infant’s legs
- breast-fed infants: constipation is unusual and organic causes should be considered
Management of constipation of infants who are or have been weaned?
- offer extra water, diluted fruit juice and fruits
- if not effective consider adding lactulose
What shoudl you ask in Hx when child comes in with constipation?
- Infrequent but normal stools are not indicators of constipation
- Ask about: hardness of stool, painful defecation, crampy abdo pain and blood on the stool or toilet
- Hx of anal fissure is significant
- Preciptating events
- Ask about diet
- Soiling
- Abdo pain
- Developmental milestones
- Ask about pregnancy, birth and meconium passage
Examination in constipation?
- Growth: review growth chart as Hirschprungs disease accompanied by failure to thrive
- Abdo exam- may be able to feel stool in LLQ
- Anorectal examination: anal fissures may be present. Do not perform DRE
What is the commonest cause of vomitting in infancy?
- GORD
- Around 40% infants regurgitate their feeds to a certain extend so degree of overlap w normal physiological processes
RF for GORD?
- Preterm delivery
- Neuro delivery
Features of GORD in infants?
- typically develops before 8 weeks
- Vomiting/regurgitation
- Milky vomits after feeds
- May occur after being laid flat
- Excessive crying, esp while feeding
Management of GORD in infants?
2015 NICE
- advise regarding position during feeds - 30 degree head-up
- infants should sleep on their backs
- ensure infant is not being overfed (as per their weight) and consider a trial of smaller and more frequent feeds
- a trial of thickened formula (for example, containing rice starch, cornstarch, locust bean gum or carob bean gum)
- a trial of alginate therapy e.g. Gaviscon. Alginates should not be used at the same time as thickening agents
- NICE do not recommend a proton pump inhibitor (PPI) to treat overt regurgitation in infants and children occurring as an isolated symptom. A trial of one of these agents should be considered if 1 or more of the following apply:
- unexplained feeding difficulties (for example, refusing feeds, gagging or choking)
- distressed behaviour
- faltering growth
If severe complications and medical treatment does not work: consider fundoplication
prokinetic agents e.g. metoclopramide should only be used with specialis
Complications of GORD in infants?
- Distress
- Failure to thrive
- Aspirtion
- frequent otitis media
- In older children: erosion may occur
A 6 week year old infant presents with worsening vomitting for the last 2 weeks. What are your differentials?
- Pyloric stenosis
- Milk allergy
- Overfeeding
- GORD
- Gastroenteritis
- Gastric volvulus
What is Gastroenteritis?
DL tutorial
- Sudden onset of diarrhoea, with or without vomitting
- Most cases due to an enteric virus; can be caused by bacteria or protozoa
- V common- 10% of children present annually
- Usually self- limiting not needing medical attention but can be life threatening
What to ask in hx for suspected GE?
- Diet
- Blood in stools and recent bowel habits
- Presence of fever
- Anyone around him unwell
- Immunisations
- Travel hx
- Rest of hx: PMH, Dhx, Shx, Fhx, ICE
DL tutorial
What to ask in hx for suspected GE?
- Diet
- Blood in stools and recent bowel habits
- Presence of fever
- Anyone around him unwell
- Immunisations
- RF for dehydration
- Urine output, fluid intake and are they floppy?
- Travel hx
- Rest of hx: PMH, Dhx, Shx, Fhx, ICE
DL tutorial
What are the RF for dehydration in GE?
- 5 or more stool in 24 hours
- 3 or more vomits in 24 hours
- Age < 12 months ( < 6 months is worse)
- Intake (worse if not breast feeding)