Gastroenterology Flashcards
What is the presentation of gastro-oesophageal reflux disease
Due to regurgitation and Sequelae:
- nausea/ vomiting
- Poor weight gain/failure to thrive
Due to oesophagitis and sequelae:
- Dysphagia/ Peptic Stricture causing obstruction
- Distress after feeds/ irritability
- Anaemia/ Haematemesis
Respiratory Symptoms:
- Apnoea - from reflux causing spasms of vocal cords
- Aspiration Pneumonia,
- wheezing/Bronchospasm
- horseness/ coughing
Neurobehavioural:
- Infant spells (including seizure like events)
- Sandifers Syndrome (spasmic torso dystonia)
What can cause GORD
LOS not matured yet
Overfeeding
What increases the risk of GORD
Down Syndrome
Cerebal Palsy
What tests can you do for GORD
Clinical Diagnosis
pH
Barium Swallow and meal
Endoscopy with biopsy - to distinguish between GORD and eosinophilic oesophagitis
What is a differential for GORD
Eosinophilic Oesophagitis - allergic oesophagitis due to immune hypersensitivity to allergens in food and environment
same features as GORD and both present with eosinophils in the oesophagus
Only way to distinguish is biopsy - with GORD generally having less eosinophils and concentrated to distal end of oesophagus
Treat by removing cause e.g food allergy
or add Steroids if not sufficient
What is the treatment for GORD
Conservative:
Reassurance and Avoid Overfeeding
Thicken/ Change Feeds
Think about how you are positioning baby whilst feeding
Medication:
1st line: Antacid (magnesium carbonate) + Sodium/Magnesium Alginate (gaviscon)
2nd line if that fails: PPI: Omeprazole or H2 Antagonist (ranitidine)
(add Metroclopramide if it is deemed as necessary)
Surgery:
Fundoplication
What are the cause of Gastroenteritis in children
Viruses:
Rotavirus (most common)
Noravirus
Bacterial:
Toxins: Clostridium Dificille, Staph
Secretagogues: Cholera
Inflammatory: Salmonella, Campylobacter, Shigella (these ones cause bloody diarrhoea)
Parasitic:
Giarda
Others:
TB
HIV
What is the presentation of Gastroenteritis
Diarrhoea +/- Bloody Stools if inflammatory
Fever +/- Vomiting
Abdominal Pain
Dehydration/ Reduced Consciousness
What tests can you do for gastroenteritis and what is it key to examine for
- Clinical
- Assess Dehydration!!! (cap refill, pinch test)
- Stool Sample for Microbiology: Bacteria, Ova, Parasites
- Blood tests not necessary in simple gastroenteritis but measure serum electrolytes including glucose if:
- Severe dehydration
- S/S suggest electrolyte imbalance
- Altered Conscious state
- IV fluids required
What is the prevention of gastroenteritis
Hygiene
Clean food and water
Education
Fly control
What is the treatment of gastroenteritis
- If dehydrated: weigh and monitor dehydration and start oral rehydration therapy (ORT) (Dioralyte)
If child refusing ORT give via nasogastric tube
IV fluids for those in shock/ severe dehydration - Antibiotics - if bacterial complicated by septicaemia or systemic or if patient immunocomprimised
- Probiotics
- No anti-emetics/ anti-motility drugs
When Should you perform a stool sample
suspect septicaemia
Blood or mucus in stool
Child is immunocompromised
When may you consider performing a stool sample
Recently travelled abroad
Diarrhoea has not improved by day 7
Uncertain about diagnosis of Gastroenteritis
What electrolyte imbalance could occur in severe dehydration from GE, how does it present and how should it be managed
Hypernatraemic Dehydration
- Unusual but serious
- Irritable with doughy skin
- Water shifts from intracellular to extracellular
- Rehydration should be slow
What are 4 main potential causes of Diarrhoea
Allergic
Infective
Post - infective
Coeliac
What other causes of diarrhoea should be considered
Inflammatory Bowel Disease Disaccharidase Deficiency Toddlers Diarrhoea Fabricated/ Induced IBS Other infections e.g otitis media, tonsillitis, UTI
What is Acute Diarrhoea
Change in the consistency of stools (loose/watery) and/or
increase in the no. of evacuations (typically >3 in 24 hrs) with or without fever or vomiting which lasts 7 days to longer and not longer than 14 days
What is Chronic Diarrhoea
Diarrhoea lasting longer than 2 weeks
What can cause chronic Diarrhoea
Continued infection with first pathogen Infection with secondary pathogen Post Enteritis Syndrome Chronic non-specific diarrhoea Food Intolerance Malabsorption
What is an example of a parasite that causes GE?
How long does it last?
How is it tested for?
How do you treat it?
Giardia - only 20% pick up rate on immediate stool examination
May last for years
Foreign travel not necessary
Test: Giardia stool ELISA kit
Treatment: Metronidazole
How does post infective diarrhoea occur?
- Infection related mucosal disintegrity
- Immunological antigen exposure
- Mucosal (allergic) inflammation
- Secondary Disaccharidase deficiency
- Diarrhoea
What is a common allergy in babies which leads to diarrhoea
Cows Milk Protein Allergy (CMPA)
What type of allergy is cows milk allergy
IgE mediated - Immediate presentation
Non IgE mediated - Delayed can take upto 48hrs to appear
What can non IgE presentation be sometimes misdiagnosed as
Lactose Intolerence