Paediatrics - GI Flashcards
What are some common medical causes of abdominal pain in children (9)?
- Non-specific abdominal pain/ unknown/ functional
- Constipation
- UTI/ pyelonephritis
- Gastroenteritis
- IBD
- Diabetic ketoacidosis
- Gynaecological causes
- Henoch Schonlein purpura
- Abdominal migraine
What are some common surgical causes of abdominal pain (5)?
- Appendicitis
- Intussusception
- Bowel obstruction
- Hernias
- Pancreatitis
What are some extra-abdominal causes of abdominal pain (2)?
- Lower lobe pneumonia
- Testicular torsion
What has been suggested to be a cause of non-specific abdominal pain in children?
Mesenteric adenitis
often occurs together with an URTI - causing enlarged lymph nodes
What are some common causes of diarrhoea in children (6)?
- Gastroenteritis
- IBD/IBS
- Coeliacs
- Chronic non-specific diarrhoea/ toddlers diarrhoea
- Cow’s milk protein allergy/ lactose intolerance
- Liver (or pancreatic) disease
What are the most common causes of constipation (7)?
- Idiopathic/ lifestyle = MC
- Hirschprungs
- CF
- Hypothyroidism
- Anal stenosis
- Intestinal obstruction
- Lactose intolerance
What would be the presentation of a child with constipation (6)?
- Less than 3 stool per week
- Hard, difficult to pass stools
- Abdo pain
- Holding abnormal posture
- Overflow diarrhoea
- Rectal bleeding
What is the term for faecal incontinence?
Encopresis
What may cause encopresis in children (5)?
- Constipation
- Hirschprungs disease
- Learning difficulties
- Cerebral palsy
- Stress/ abuse
When is encopresis considered abnormal?
Past the age of 4
What viscous cycle can occur that makes constipation progressively worse?
Impacted stool in the rectum –> stretched rectum –> desensitisation of rectum –> urge to defecate less frequently –> further impacted stool
How should constipation be managed in children (3)?
- Lifestyle advice/ factors
- Laxatives
- Schedule visits to toilet/ keep bowel diary
What laxatives should be used to treat constipation in children (3)?
- Macrogol (e.g. movicol) disempaction regimen - 2 weeks
- senna if needed
- others (e.g. lactulose)
What are the typical signs/ symptoms of appendicitis (8)?
- Central abdo pain, localising to McBurneys point
- Anorexia
- Nausea/ vomiting
- Fever
- Rosvings sign
- Guarding
- Rebound/ percussion tenderness (peritonitis)
- Psoas + obturator sign
How is appendicitis diagnosed (3)?
- Raised CRP/ESR
- Ultrasound/ CT (sometimes used)
- Diagnostic laparoscopy
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What is the most common cause of gastroenteritis in children?
Rotavirus
Norovirus most common in adults
What are some other viral causes of gastroenteritis other than rotavirus in children (2)?
- Norovirus
- Adenovirus
What are the most common causes of bacterial diarrhoea (4)?
- C. jejuni = MC
- E. coli (most strains don’t cause infection)
- Shigella
- Salmonella
What symptom may point more towards bacterial gastroenteritis?
Bloody diarrhoea
What are two parasitic causes of gastroenteritis?
- Gardia
- Cryptosporidium
mostly water born
What is the main risk associated with gastroenteritis?
Dehydration - the very old, young or vulnerable may need to be admitted for IV fluids
What are signs of dehydration in an infant (7)?
- Hypotension
- Cold extremities
- Reduced skin turgor
- Tachypnoea/ tachycardic
- Slow cap refill
- Sunken fontanelle
- Dry mucous membranes
How long should a child stay off school with gastroenteritis?
48 hours post diarrhoea/ vomiting
What are some post gastroenteritis complications (5)?
- GBS
- IBS
- Lactose intolerance
- Reactive arthritis
- Mesenteric adenitis
What is coeliacs disease?
Autoimmune reaction where exposure to gluten causes an immune reaction creating inflammation in the intestines
What are the signs/ symptoms of coeliacs in children (6)?
- Failure to thrive
- Diarrhoea
- Abdo pain
- Fatigue
- Weight loss
- Dermatitis herpetiformis
What other parts of the body (other than intestines) may be affected in those with coeliacs disease (2)?
- Brain - ataxia, epilepsy
- Skin - dermatitis herpetiformis
What part of the bowel is particularly affected by coeliac’s disease?
Jejunum
What genes are associated with coeliacs disease (2)?
- HLA-DQ2 (90%)
- HLA-DQ8
What is the first line investigation for coeliacs disease?
- anti TTG-IgA
- Total IgA
What antibody can also be tested for if anti TTG is inconclusive for coeliacs disease?
EMA-IgA
If there is IgA deficiency how can coeliacs be tested for?
- anti TTG-IgG
- anti EMA-IgG
How is a diagnosis of coeliacs disease confirmed?
Duodenal biopsy
What would a duodenal biopsy show in those with coeliacs (2)?
- Crypt hyperplasia
- Villous atrophy
What is important for those suspected of coeliac to carry on doing during investigation for coeliacs?
They must continue to eat a gluten diet
For which conditions is a serological screen for coeliacs disease indicated (3)?
- T1DM
- Autoimmune thyroid disease
- Downs syndrome
What are some complications of coeliacs disease (4)?
- Malabsorption
- Anaemia
- Osteoporosis
- Small intestine cancers (rarer)
How is coeliacs treated?
Gluten free diet
What is inflammatory bowel disease?
Inflammation of the walls of the GI tracts, with periods of remission and exacerbation
What age children are usually affected by IBD?
15+ year olds
What is the general presentation of a child/ teen with IBD (7)?
- Diarrhoea
- Abdo pain
- Bleeding
- Weight loss
- Anaemia
- Fever
- Dehydration
What are some extra-intestinal manifestations of IBD (5)?
- Arthritis/ enthesitis
- Aphthous mouth ulcers (mostly crohns)
- Primary sclerosing colangitis (UC only)
- Erythema nodosum
- Episcleritis + uveitis
What is the first line test for IBD?
Faecal calprotectin
What is the gold standard test for IBD?
OGD/ colonoscopy with biopsy
What other investigation can be done to investigate IBD?
Imaging (US/CT/MRI) to look for fistulas, abscesses and strictures
How is a flare of Crohns treated (3)?
- Steroids (oral prednisolone or IV hydrocortisone)
- Mesalazine
- (+ azathioprine, mercaptopurine, infliximab)
How is crohns remission maintained (2)?
- Azathioprine or mercaptopurine
- Methotrexate, infliximab, adalimumab
How is a mild - moderate flare of UC treated (2)?
- Aminosalicylate (mesalazine - oral or rectal)
- Oral steroids
How is a sever flare of UC treated (2)?
- IV hydrocortisone
- IV ciclosporin
How is remission maintained in UC (2)?
- Aminosalicylate (mesalazine)
- Azathioprine/ mercaptopurine
What other treatment as well as medication can be offered to those with IBD?
Surgery
What is a common cause of diarrhoea in toddlers?
Toddlers diarrhoea/ chronic non-specific diarrhoea (maybe a form of IBS)
What is the prognosis for chronic non-specific diarrhoea?
Most children usually grow out of it
What are some causes of vomiting in children (8)?
- Overfeeding
- GORD
- Pyloric stenosis
- Gastroenteritis
- Other infections e.g. UTI + meningitis
- Intestinal obstruction
- Bulimia nervosa
- Cows milk protein allergy
What are some red flag symptoms associated with vomiting in babies (5)?
- Not keeping any food down
- Projectile vomiting
- Bile stained vomit
- Haematemesis
- Abdominal distension
What age are children commonly affected by GORD?
Under 1 year
Why are children under 1 year commonly affected by GORD?
They have an underdeveloped/ immaturity of the lower oesophageal sphincter
What is the presentation of GORD in those under 1 (6)?
- Chronic cough
- Hoarse voice
- Distress/crying/ unsettled after feed
- Reluctance to feed
- Pneumonia
- Poor weight gain
How can GORD typically be managed in babies (4)?
- Small frequent meals
- Burping regularly
- Not overfeeding
- Keeping baby upright after meals
What can be used to treat more problematic cases of GORD in babies (3)?
- Gaviscon mixed with feed = (first for breastfed)
- Thickened milk or formula (first for formular fed)
- PPIs
What is a worrying syndrome associated with GORD in babies?
Sandifers syndrome
What are the symptoms of Sandifers syndrome?
Episodes of abnormal movements and muscles spasms particularly in the back and neck
What is the prognosis for Sandifers syndrome?
The outcome is good, however other conditions need to be ruled out such as infantile spasms and epilepsy
What are the symptoms of cows milk protein allergy (4)?
- Regurg/ vomiting
- Diarrhoea
- Uticaria
- ‘Colic’ symptoms
How common is cows milk protein allergy?
3-6% of children
What is a severe complication of cows milk protein allergy?
Anaphylaxis - if IgE mediated allergy is suspected (rapid onset, angioedema, wheeze)
Which group of children and what age does cows milk protein allergy typically occur in?
Formula fed infants in first 3 months of life
can occasionally occur in breast fed infants, when mother has cows milk in diet
What are the symptoms of lactose intolerance (4)?
- Flatulence
- Diarrhoea
- Abdo pain
- Nausea
When does lactose intolerance usually present?
Past age 5 when our bodies stop making lactase
What is pyloric stenosis?
Hypertrophy of the pyloric sphincter
How does pyloric stenosis present (2)?
- Projectile vomiting after feeding
- Failure to thrive
What age does pyloric stenosis usually present?
4-6 weeks after birth
What is the pathophysiology of projectile vomiting in pyloric stenosis?
Increasingly strong peristaltic waves in the stomach eventually overcome the LOS and project food out of the mouth
What would a blood gas analysis show on a baby with pyloric stenosis?
Hypochloric hypokalaemic metabolic alkalosis
Why does pyloric stenosis cause hypochloric metabolic alkalosis?
Baby is vomiting HCl therefore this causes an alkalosis and low chlorine
What may be seen on examination of a baby with pyloric stenosis (2)?
- Round mass in upper abdomen
- Visible peristalsis
How is pyloric stenosis diagnosed?
Abdominal ultrasound
How is pyloric stenosis treated?
Laparoscopic pyloromyotomy (surgery to cut/ widen pyloric sphincter) - Ramstedt’s
What is the most common hernia in children?
Inguinal hernia
What type of inguinal hernia occurs in children?
Indirect hernia
direct more common in adults
What is the pathophysiology of an indirect inguinal hernia compared to a direct?
- Indirect - passes through the inguinal canal
- Direct - bulge through abdominal wall in weak spot
What are the symptoms of an inguinal hernia in a child (2)?
- Bulge/ swelling in the groin/ scrotum
- Discomfort/ pain –> crying
sometimes it appears the child is crying because of the hernia, but in reality the normal crying causes the hernia to bulge
What are 2 features suggestive of hernias?
- Lump protrudes on coughing/ straining/ crying
- Lump reducible
How are inguinal hernias treated in children?
Open/ laparoscopic surgery shortly after diagnosis
Who do inguinal hernias occur more frequently in?
Boys
What is a differential diagnosis for an inguinal hernia in children?
Hydrocele
What is the cause of a hydrocele in a newborn?
Collection of fluid around the testicle that enters via a small opening in the inguinal canal, but not large enough opening for bowel to protrude through
What is the second most common hernia in children?
Umbilical hernia
Where do umbilical hernias occur?
A bulge/ lump around the belly button
How are umbilical hernias managed in children?
Small umbilical hernias usually close on their own. If large or no improvement by age 3-5, surgical repair can be performed.
What is a severe congenital type of hernia?
Diaphragmatic hernia
What is a diaphragmatic hernia?
Protrusion of the abdominal organs through an abnormal opening in the diaphragm into the chest
What causes a diaphragmatic hernia?
Malformation of the diaphragm during foetal development
What are the symptoms of a diaphragmatic hernia (3)?
- Respiratory distress immediately after birth
- Cyanosis
- Sunken abdomen (due to displacement of organs into chest)
How is a diaphragmatic hernia usually diagnosed?
Usually prenatally through ultrasound
How is a diaphragmatic hernia usually managed (2)?
- Stabilisation
- Surgical repair
What are some other hernias that can occur in children (other than inguinal, umbilical and diaphragmatic) (3)?
- Epigastric - midline between umbilicus and sternum
- Incisional - through surgical scar
- Hiatal - stomach protrudes into chest
What are some possible complications of hernias in children (3)?
- Strangulation
- Obstruction (bowel)
- Incarceration (irreducible)
What are some risk factors for hernias in children (3)?
- Low birth weight
- Genetics/ race
- Gender (inguinal more common in boys)
What is hirschprungs disease?
Ganglion cells of the myenteric plexus are absent in the distal bowel and rectum
What is the pathophysiology of hirschprungs disease?
Parasympathetic ganglion cells travel down the gut during development they do not reach the end of the gut in hirschprungs disease leaving a portion without innervation
What is a risk factor for hirschprungs disease?
A number of genetic conditions including downs syndrome, neurofibromatosis
What are the symptoms/ signs of hirschprungs disease (6)?
- Acute intestinal obstruction
- Delayed meconium
- Chronic constipation
- Abdo pain + distension
- Vomiting
- Poor weight gain/ failure to thrive
What is a severe complication of hirschprungs?
Hirschprungs associated enterocolitis
What are the symptoms of hirschprungs associated enterocolitis (3)?
- Fever
- Abdo distension
- Diarrhoea
+sepsis symptoms
How is hirschprungs disease diagnosed?
Rectal biopsy = absence of ganglionic cells
What other investigation is useful for hirschprungs disease?
Xray - look for signs of HAEC, obstruction
How is hirschprungs treated?
Surgical removal of the aganglionic section of the bowel
What is meckels diverticulum?
Outpouching of the embryological remnant of the midgut toward to umbilicus 1 meter from the end of the ileum
How common is meckels diverticulum?
2% of people have it
What is intussusception?
Telescoping of the bowel into itself
What age does intussusception usually occur?
6 months to 2 years
What are some associated conditions with intussusception (5)?
- Concurrent viral illness
- CF
- Meckels diverticulum
- Intestinal polyps
- Henoch Schonlein purpura
What are the signs/ symptoms of intussusception (5)?
- Redcurrant jelly stool
- Severe colicky abdo pain
- RUQ mass (sausage-shaped mass)
- Vomiting
- Pale lethargic child
How is intussusception investigated (2)?
- Ultrasound scan
- Contrast enemas
How is intussusception managed (2)?
- Therapeutic enema (air or water pumped in)
- Surgical reduction
What are some complications of intussusception (3)?
- Obstruction
- Gangrenous bowel
- Perforation
What should be suspected in an infant with green bilious vomiting?
Intestinal obstruction (particularly malrotation + volvulus)
*other causes include atresia, meconium ileus, necrotising enterocolitis)
What are the signs/ symptoms of intestinal malrotation with volvulus (6)?
- Green bilious vomiting
- Distended abdomen
- Painful abdomen
- Infrequent bowel movements
- Lethargy
- Poor appetite
What is a volvulus?
Twisted intestine that obstructs passage of faeces through it
How is intestinal malroatation investigated (2)?
- USS
- Upper GI contrast study
What age does malrotation usually present?
Within first year of life
How is malrotation treated?
Surgery (laparotomy)
What disease is caused by a deficiency in protein intake?
Kwashiorkor
What are the signs/ symptoms of Kwashiorkor (5)?
- Failure to thrive
- Fatigue
- Muscle waisting
- Oedema
- Immunodeficiency
What is a key blood finding for those with kwashiorkor?
Hypoalbuminaemia
What disease is caused by a deficiency in all macronutrients?
Marasmus
What are the key macronutrients deficient in those with marasmus (3)?
- Protein
- Carbohydrates
- Fats
What are the signs/ symptoms of marasmus (4)?
- Failure to thrive
- Low BMI/ weight loss
- Brittle hair
- Immunodeficiency
What is the key difference between marasmus and kwashiorkor in terms of presentation?
Marasmus does not cause oedema, kwashiorkor does
What is colic?
Frequent, prolonged episodes of crying in a healthy infant
What ages does colic usually occur between?
2 weeks to 4 months (first year of life)
What is important to do in babies with colic?
Rule out other causes of colic e.g. GORD, milk protein allergy
What disease may affect the bile ducts of children?
Choledochal cysts
What is a choledochal cyst?
A congenital cystic dilation of bile ducts (intra or extra hepatic)
What is the key triad of symptoms suggestive of a choledochal cyst?
- Jaundice
- Abdominal pain
- Abdominal (RUQ) mass
What are some other symptoms of choledochal cyst (other than the triad of symptoms) (3)?
- Nausea
- Vomiting
- Fever
What age do choledochal cysts usually present?
Usually in early childhood, < 5 years
However they can go undiagnosed until adulthood
How is a choledochal cyst investigated (3)?
- Ultrasound
- MRCP/ ERCP
- CT
How are choledochal cysts treated?
Surgical removal + reconstruction
What are some complications of choledochal cysts (3)?
- Stone formation
- Pancreatitis
- Increased risk of cholagiocarcinoma
What are the causes of acute liver failure in children (4)?
- Viral hepatitis (hep A-G/ other viruses)
- Paracetamol overdose
- Wilsons
- Autoimmune hepatitis
What are the causes of chronic liver disease in children (8)?
- Postviral hepatitis
- Autoimmune hepatitis + PSC
- Wilsons
- CF
- Drug induced (e.g. NSAIDs)
- NAFLD
- A1ATD
- Idiopathic (may be an unidentified viral infection)
What virus other than hep A-G commonly causes hepatitis?
EBV
What are the symptoms of liver disease in children (7)?
- Jaundice
- Vomiting
- Lethargy
- Abdo pain
- Confusion
- Increased bruising/ bleeding
- Failure to thrive
What are some GI causes of failure to thrive in children (10)?
- GORD
- Poor feeding
- Pyloric stenosis
- IBD
- Coeliacs
- Nutritional deficiencies (e.g. marasmus/ kwashiorkor)
- Food intolerance/ allergy
- Liver disease
- CF
- Chronic diarrhoea/ constipation
- Hirschprungs
What is a key differential for failure to thrive?
Normal growth variation in healthy children (due to parents being short for example)
What are some important causes of poor feeding in babies (9)?
- GI disorders e.g. GORD, coeliacs, constipation, food intolerance/ allergy
- Neurological disorders e.g. cerebral palsy
- Congenital/ structural e.g. cleft lip, tongue tied
- Endocrine e.g. hypothyroidism
- Congenital heart disease
- Chronic lung disease
- Infection
- Behavioural disorders e.g. ASD
- Neglect/ abuse/ poverty