gastroenterology Flashcards
define posseting
describes the small amounts of milk that often accompany the return of swallowed air (wind), whereas regurgitation describes larger, more frequent losses.
infant causes of vomitting
- Gastro-oesophageal 2. reflux
- feeding problems
- infection
- gastroeneteritis
- OM
- whooping cough
- urinary tract
- menigitis - food allergy and food intolerance
- eosinophilic oesophagitis
- intestinal obstruction
- pyloric stenosis
- atresia - duodenal
- intussusception
- malrotation
- volvulus
- dupilication cysts
- strangulated inguinal hernia
- hirschsprung disease - congenital adrenal hyperplasia
- renal failure
preschool children causes of vomiting
- gastroenteritis
- infection
- gastroeneteritis
- OM
- whooping cough
- urinary tract
- menigitis - intestinal obstruction
- intussusception
- malrotation
- volvulus - raised ICP
- coeliac disease
- renal failures
- torsion of testes
school age and adolescents causes of vomiting
gastroenteritis infection - pyelonephritis peptic ulceration appendicitis migraine raised ICP coeliac renal failure DKA alcohol drug ingestion BN/AN pregnancy torsion of testes
red flag clinical features
Bile-stained vomit -Intestinal obstruction
Haematemesis - Oesophagitis, peptic ulceration, oral/nasal bleeding, and oesophageal variceal bleeding
Projectile vomiting, in first few weeks of life Pyloric stenosis
Vomiting at the end of paroxysmal coughing Whooping cough (pertussis)
Abdominal tenderness/abdominal pain on movement - Surgical abdomen
Abdominal distension Intestinal obstruction, including strangulated inguinal hernia
Hepatosplenomegaly Chronic liver disease, inborn error of metabolism
Blood in the stool Intussusception, bacterial gastroenteritis
Severe dehydration, shock - Severe gastroenteritis, systemic infection (urinary tract infection, meningitis), diabetic ketoacidosis
Bulging fontanelle or seizures- Raised intracranial pressure
Faltering growth - Gastro-oesophageal reflux disease, coeliac disease and other chronic gastrointestinal conditions
factors contributing to the gastro-oesophageal reflux
relaxation of the lower oesophageal sphincter as a result of functional immaturity.
fluid diet
horizontal posture a short intra-abdominal length of oesophagus
what is gastro-oesophageal reflux
CFs
recurrent regurgitation or vomittung but are putting on weight normally
hoarse cry dehydration weight loss failure to thrive aspiration pneumonia
complications of gastro- reflux
faltering growth from severe vomiting
- Oesophagitis – haematemesis, discomfort on feeding or heartburn, iron-deficiency anaemia
- Recurrent pulmonary aspiration – recurrent pneumonia, cough or wheeze, apnoea in preterm infants
- Dystonic neck posturing (Sandifer syndrome)
- Apparent life-threatening events
who is more predisposed to gastro-oesophageal reflux
- children with cerebral palsy or other neurodevelopmental disorders
- preterm infants, especially in those with bronchopulmonary dysplasia
- following surgery for oesophageal atresia or diaphragmatic hernia.
Ix for gastro-oesophageal reflux
clinical diagnosis
- 24-hour oesophageal pH monitoring to quantify the degree of acid reflux - pH should be ABOVE 4
- 24-hour impedance monitoring which is available in some centres. Weakly acidic or nonacid reflux, which may cause disease, is also measured
- endoscopy with oesophageal biopsies to identify oesophagitis and exclude other causes of vomiting.
Mx of gastro oesophageal reflux
uncomplicated - parental reassurance, adding inert thickening agents to feeds (e.g. Carobel), and smaller, more frequent feeds.
trial of alginate therapy ie Gaviscon not the same time as thickening agents
- unexplained feeding difficulties (for example, refusing feeds, gagging or choking)
- distressed behaviour
- faltering growth - acid suppression with proton-pump inhibitors (e.g. omeprazole)
reduce the volume of gastric contents and treat acid-related oesophagitis
domeperidone - enhance gastric emptying - SEs arryhtmias
ABOVE FAILS
- cows milk protein allergy ???
surgical Mx only for children with complications unresponsive to intensive medical treatment or oesophageal stricture - Nissen fundoplication - fundus of the stomach is wrapped around the intra-abdominal oesophagus, is performed either as an abdominal or as a laparoscopic procedure.
what is pyloric stenosis
presents at what age
more common in who
hypertrophy of the pyloric muscle causing gastric outlet obstruction.
- > It presents at 2–8 weeks of age, irrespective of gestational age.
- > More common in boys (4 : 1), particularly firstborn, and there may be a family history, especially on the maternal side.
clinical features of pyloric stenosis
- vomiting, which increases in frequency and forcefulness over time, ultimately becoming projectile
- hunger after vomiting until dehydration leads to loss of interest in feeding
- weight loss if presentation is delayed.
hypokalaemic hypochloraemic metabolic alkalosis with a low plasma sodium and potassium occurs as a result of vomiting stomach contents.
Diagnosis of pyloric stenosis
examination features
test feed is performed
-> The baby is given a milk feed, which will calm the hungry infant, allowing examination
when feeding peristalsis may be seen as a wave moving from left to right across the abdomen
palpable in the right upper quadrant
tomach is overdistended with air, it will need to be emptied by a nasogastric tube to allow palpation.
US helpful to confirm prior to surgery
Mx of pyloric stenosis
correct any fluid and electrolyte disturbance with intravenous fluids
once everything is settled - PYLOROMYOTOMY -> division of the hypertrophied muscle down not mucosa
Postoperatively, the child can usually be fed within 6 hours and discharged within 2 days of surgery.
define colic
inconsolable crying or screaming often accompanied by drawing up of the knees and passage of excessive flatus takes place several times a day.
occurs in the first weeks of life
if its severe and persistent, protein hydrolysate formula (cow’s milk protein free) may be considered and continued if symptoms improve. If they do not, then a trial of gastro-oesophageal reflux treatment may be considered.
what is meckel diverticulum
presentation
2% of individuals ileal remnant of the vitello-intestinal duct, a Meckel diverticulum, which contains ectopic gastric mucosa or pancreatic tissue.
severe rectal bleeding
acute reduction in Hb
A technetium scan will demonstrate increased uptake by ectopic gastric mucosa in 70% of cases
Mx - surgical resection
what is malrotation
During rotation of the small bowel in fetal life, if the mesentery is not fixed at the duodenojejunal flexure or in the ileocaecal region, its base is shorter than normal, and is predisposed to volvulus. Ladd bands are peritoneal bands that may cross the duodenum, often anteriorly
presentations of malrotation
Ix
Mx
- high caecum at the midline
- High caecum at the midline
- Feature in exomphalos, congenital diaphragmatic hernia, intrinsic duodenal atresia
- May be complicated by the development of volvulus, an infant with volvulus may have bile stained vomiting
- Diagnosis is made by upper GI contrast study and USS
- Treatment is by laparotomy, if volvulus is present (or at high risk of occurring then a Ladd’s procedure is performed
Obstruction with bilious vomiting is the usual presentation in the first few days of life but can be seen at a later age
any child with dark green vomiting needs an urgent upper GI contrast study to assess intestinal rotation unless signs of vascular compromise are present, when an urgent laparotomy is needed.
what is recurrent abdominal pain
presentation
pain sufficient to interrupt normal activities and lasts for at least 3 months.
periumbilical pain
constipation
Ix of recurrent abdominal pain
urine microsopy adn culture is mandatory to exclude UTIs
abdominal US - excluding gall stones and pelvi-ureteric junction obstruction.
coeliac
TFTs
what is abdominal migraine
presentation
abdominal pain in addition to headaches
midline abdo pain w vomiting and facial pallor
long periods w no pain and shorter period with non specific abdo pain and pallor w or wo vomiting
what is IBS
altered gastrointestinal motility and an abnormal sensation of intra-abdominal events. Symptoms may be precipitated by a gastro-intestinal infection
experience pain on inflation of balloons in the intestine at substantially lower volumes than do controls.
presentation of IBS
- non-specific abdominal pain, often peri-umbilical, may be worse before or relieved by defaecation
- explosive, loose, or mucousy stools
- bloating
- feeling of incomplete defecation
- constipation (often alternating with normal or loose stools).
H.pylori causes what
Ix
antral gastritis, which may be associated with abdominal pain and nausea. It is usually identified in gastric antral biopsies. The organism produces urease, which forms the basis for a laboratory test on biopsies and the 13 C breath test following the administration of 13 C-labelled urea by mouth. Stool antigen for H. pylori may be positive in infected children
Mx of peptic ulceration
PPI - omeprazole
if investigations suggest they have an H. pylori infection, eradication therapy should be given (amoxicillin and metronidazole or clarithromycin
what is functional dyspepsia
Sx
Those who fail to respond to treatment or whose symptoms recur on stopping treatment should have an upper gastrointestinal endoscopy and, if this is normal
Sx
early satiety, bloating, and postprandial vomiting and may have delayed gastric emptying as a result of gastric dysmotility.