GI Flashcards
2week old male with intermittent bilous vomiting, on PE soft abdomen, ab x-ray normal
Malrotation
1month old baby presenting with jaundice, triangular facies, deep set eyes and cardiac murmur
Alagille syndrome
Which of the following cause neonatal cholestasis: A. Hepa A B. Hepa B C. Hepa C D. None of the above
D. None
Which of the ff is not usually seen in recurrent cholangitis in pediatric cholestatic liver: A. E. Coli B. Pseudomonas C. Acinetobacter D. Klebsiella
Seen in recurrent cholangitis: e coli, pseudomonas, Enterococcus, Klebsiella
Identify the condition
Nonbilous vomiting, epigastric distension, abd pain
Radiograph: dilated stomach with characteristic beak sign near lower esophageal junction
Volvulus
Pressure of Portal hypertension
10-12mmhg
Normal 7mmhg
fetus can start swallowing at
12 wks aog
nutritive sucking for fetus at
34 wks
bilous vomiting ouccurs if obstruction is found
below 2nd part of duodenum
diagnosis of cyclic vomiting
ALL MUST BE MET
• At least 5 attacks in any interval, or a minimum of 3 episodes during a 6-mo period
• Recurrent episodes of intense vomiting and nausea lasting 1 hr to 10 days and occurring at least 1 wk apart
• Stereotypical pattern and symptoms in the individual patient
• Vomiting during episodes occurs ≥4 times/hr for ≥1 hr
• Return to baseline health between episodes
• Not attributed to another disorder
cyclic vomiting occurs at what age
2-5years old
normal stool output
5ml/kg/day
or 200g/24 hours in older kids
diarrhea definition
> 10ml/kg/day
or > 200g/24hr in older kids
<14 acute
14 days chronic or persistent
ion gap in secretory diarrhea
<100mOsm/kg
calcification of teeth occurs
3-4mo AOG
teeth abnormality that occurs in osteogenesis imperfecta
poorly calcified dentin
bluish in appearance
dentigenesis imperfecta
tongue becomes lacerated/amputated in neonates with natal teeth
Riga Fede disease
surgical closure of cleft lip can be done
3months
closure of palate usually done at
1yr old for speach
downward sloping palpebral fissures colobomas sunken cheekbones blind fistulas between eyes and mouth deformed pinnae receding chin large mouth autosomal dominant with incomplete penetrance
treacher collins syndrome
mandibulofacial dystosis
franceschetti syndrome
characterized by incomplete development of the ear, nose, soft palate, lip, and mandible
autosomal dominant
goldenhar syndrome
organism assoc with dental caries
stretococcus mutans
associated with gingival hyperplasia
phenytooin
cyclosporine
some calcium channel blockers
most common congenital anomaly of esophagus
esophageal atresia
if gap is more than __cm in EA with TEF
primary repoair not possible
3-4cm
most encountered foregut duplications
esophageal duplication cysts
dysphagia lusoria
dysphagia caused by obstruction either by aberrant right subclavian artery or right sided or double aortic arch
most common cause for esophageal obstruction
eosinophilic eosphagitis
treatment for achalasia
pneumatic dilattation or surgical (Heller) myotomy
characteristics of infant reflux
peak at 4months
resolves 88% by 12 months and nearly all by 24 months
GERD with neck controtions
sanfider syndrome
Vomiting Feeding problems Epigastric pain Atopy Esophagoscopy granular furrowed with white specks
Eosinophilic esophagitis
Foreign bodies Lodge at the
Cricopharyngeus
Upper esophageal sphincter, aortic arch or just superior to the diaphragm at the level of the LES
How are coins seen at esophagus xray
How is it different from tracheal foreign body
Esophagus: flat surface of coin on AP, edge on lateral
Trachea: edge on AP, flat on lateral
Button batteries cause
Mucosal injury in 1 hour and involve all layers in 4 hours
What can be used to facilitate passage in distal esophagus
Glucagon
Foregut gives rise to
Esophagus
Stomach
Duodenum at level of insertion of common bile duct
Midgut gives rise to
Small and large bowel to level of mid transverse colon
Hindgut gives rise to
Rest of colon and anal canal
rapid growth of the midgut causes it to protrude out of the abdominal cavity through the umbilical ring during fetal development. The midgut subsequently returns to the peritoneal cavity and rotates ______ until the cecum lies in the right lower quadrant. The process is normally complete by the ____ wk of gestation.
Counterclockwise
8th week
Migration of the neural crest tissue is complete by the ___ wk of gestation. Interruption of the migration results in ____
24th
Hirschsprung disease.
Carbohydrates, protein, and fat are normally absorbed by the ___
upper half of the small intestine
Most of the sodium, potassium, chloride, and water are absorbed in the ___
small bowel
Bile salts and vitamin B12 are selectively absorbed in the __
distal ileum
iron is absorbed in the ___
duodenum and proximal jejunum
Criteria for diagnosis hypertrophic pyloric stenosis include
pyloric thickness 3-4 mm, an overall pyloric length 15-19 mm, and pyloric diameter of 10-14 mm
Ultrasonography findings of pyloric stenosis
elongated pyloric channel (string sign),
a bulge of the pyloric muscle into the antrum (shoulder sign), and
parallel streaks of barium seen in the narrowed channel, producing a “double tract sign”
Associated with pyloric stenosis
eosinophilic gastroenteritis, Apert syndrome, Zellweger syndrome, trisomy 18, Smith-Lemli-Opitz syndrome, Cornelia de Lange syndrome erythromycin in neonates mostly female infants of mothers treated with macrolide antibiotics during pregnancy
Treatment pyloric stenosis
Ramstedt
Pyloromyotomy
Nonbilous vomiting
Ab distention on first day of life
Polyhydramnios low birth weight
Large stomach on xray
Pyloric atresia
Ligaments tethering stomach
Gastrohepatic
Gastrosplenic
Gastrocolic
Associated with cmv
vomiting, anorexia, upper abdominal pain, diarrhea, edema (hypoproteinemic protein- losing enteropathy), ascites, and, rarely, hematemesis if ulceration occurs
Upper GI series show thickened gastric folds
Hypertrophic gastropathy
Bilous vomiting No ab distention Seen first day of life Polyhydramnios Double bubble on xrat
Duodenal atresia
Intestinal duplication in thorax
Neuroenteric cysts
typical Meckel diverticulum is a __ outpouching of the ileum along the antimesenteric border ___ from the ileocecal valve
3-6 cm
50-75 cm (approximately 2 feet)
Diagnosis of meckels diverticulum
Meckel radionuclide scan with technetium 99m
Aside from antibiotics what else can treat bacterial overgrowth
Low dose octreotide
Msot common cause of lower intestinal obstruction in neonate
Predominant male or female?
Hirschprung
Male
Histopath findings in hirschprung
Absence meissner and auerbach plexus
Hypertrophied nerve bundles
High concentration of acetylcholinesterase between muscular layer and submucosa
Pathogens in hirschprung
Clostridium
Staph
Anaerobes
Coliform
Currarino triad
Anorectal malformation (Imperforate or ectopic anus) Sacral bone anomaly Presacral anomaly (meningocele, teratoma,cyst)
How is rectal biopsy done
Suction no closer than 2 cm above from dentate line
Classic finding enema hirschprung
abrupt narrow transition zone between the normal dilated proximal colon and a smallercaliber obstructed distal aganglionic segment
compare the diameter of the rectum to that of the sigmoid colon
How to know if hirschprung
because a rectal diameter that is the same as or smaller than the sigmoid colon suggests Hirschsprung disease
Most common cause of intestinal obstruction 3mo to 6yr
Intussusception
Possible lead point for intussusception
Meckel diverticulum, intestinal polyp, neurofibroma, intestinal duplication cysts, inverted appendix stump, leiomyomas, hamartomas, ectopic pancreatic tissue, anastomotic suture line, enterostomy tube, posttransplant lymphoproliferative disease, hemangioma, or malignant conditions such as lymphoma, or Kaposi sarcoma
Usual lead point intussusception post op
ileoileal
ultrasound findings of intussusception
tubular mass in longitudinal
doughnut in transverse
coiled spring on contrast enema
perforation with foreign body tends to occur at
physiologic sphincters (pylorus, ileocecal valve), acute angulation (duodenal sweep), congenital gut malformations (webs, diaphragms, diverticula), or areas of pre- vious bowel surgery
problem with battery ingestion
leakage of alkali or heavy metal
electrical discharges causes burns in intestine
gastric ulcer found in
lesser curvature of stomach
primary ulcers found in
duodenal
ulcer in response to burn
curling ulcer
ulcer in response to stress/shock/intracranial mass
cushing ulcer
increase gastric acid production
acetylcholine
histamin
gastrin
decrease gastric acid production
prostaglandin
h pylori produces
urease
catalase
oxidase
gastric hypersecretion by tumor
associated with MEN multiple endocrine neoplasia
zollinger ellison syndrome
ulcerative colitis localized to __
colon
blood mucus pus in stool
diarrhea
ulcerative colitis
extraintestinal manifestation of ulcerative colitis
pyoderma gangrenosum, sclerosing cholangitis, chronic active hepatitis, and ankylosing spondylitis
treatment for ulcerative colitis
sulfasalazine
idiopathic, chronic in ammatory disorder of the bowel, involves any region of the alimentary tract from the mouth to the anus.
crohn
diarrhea
weight loss
ab pain
failure to thrive
crohn
tx for mild crohn
mesalamine
edema assoc with
protein losing enteropathy
perianal excoriation and gaseous abdominal distention
carbohydrate malabsorption
explosive watery diarrhea suggests
carbohydrate malabsorption
loose, bulky stools are associated with
celiac disease
pasty and yellowish offensive stools suggest an
exocrine pancreatic insufficiency
Stool pH and reducing substances for
carbohydrate malabsorption
check for acidic stool and >2 reducing substances
quantitative stool fat examination
fat malabsorption
α1antitrypsin
protein malabsorption
fecal stool elastase1
exocrine pancreatic insufficiency
Breath hydrogen test
to identify the specific carbohydrate that is malabsorbed
serum trypsinogen in cystic fibrosis is
elevated early then declines 5-7 years old
shwachman syndrome
serum trypsinogen is
low
gold standard test for exocrine pancreatic function
duodenal aspirate
failure to thrive chronic diarrhea vomiting ab distention muscle wasting IDA nonresponsive to iron therapy epilepsy with bilateral occipital classifications
celiac disease
malignancy main cause of death in celiac disease
non hodgkin lymphoma
diagnosis if celiac disease
finding of villous atrophy with hyperplasia of the crypts and abnormal surface epithelium and circulatng igA celiac disease assoicated antibodies while on gluten
then complete remission on gluten free diet
autosomal recessiev
manifests as profuse watery secretory diarrhea
light microscopy diffuse thinning of the mucosa with hypoplastic villus atrophy and no inflammatory infiltrate
congenital microvillus atrophy
or microvillus inclusion disease
treatment of congenital microvillus atrophy
or microvillus inclusion disease
octreotide
small intestinal mucosal biopsy is focal epithelial tufts (teardrop shaoed groups of closely packed enterocytes with apical rounding of plasma membrane
presents as persistent watery diarrhea at first week infancy
tufting enteropathy
treatment of intestinal lymphangiectasia
restricting long chain fat and using formula with formula and MCT
diagnosis of intestinal lymphangiectasia
elevated fecal alpha antitrypsin clearance
caused by tropheryma whipplei weight loss diarrhea ab pain PAS positive microphages in biopsy
whipples disease
tx for whipples disease
cotrimoxazole
malabsorption of neutral amino acids, including the essential amino acid tryptophan, with aminoaciduria, photosensitive pellagra-like rash, headaches, cerebellar ataxia, delayed intellectual development, and diarrhea
Hartnup disease
Tryptophan malabsorption
causes urine to turn blue
blue diaper syndrome (indicanuria, Drummond syndrome)
characterized by the absence of high-density lipoprotein cholesterol
premature coronary heart disease and accumulation of cholesterol in liver, spleen, lymph nodes (tonsils), and small intestine
Tangier disease
useful to differentiate between lack of IF and malabsorption of cobalamin
Schilling test
an infant can survive even if __ cm of bowel with ileocecal valve or __cm without
15cm
20cm
t or f
jejunum resection is better than ileal resection
true
proximal 100-200cm of jejunum is main site of absorption of
carbohydrates
protein
iron
water soluble vitamin
distal ileum absorption
vitb 12
bile salts
net sodium and fluid absorption is at
ileum
duodenum and proximal jejunum absorption
calcium magnesium phosphorus folic acid iron
renal stones can occur in malabsorption due to
hyperoxaluria secondary to steatorrhea
calcium binds to fat and to oxalate so it’s secreted out and oxalate levels rise
severe portal hypertension in liver disease leads to malabsorption due to
portal hypertensive enteropathy
poor absorption of nutrients
loss of deep tendon reflexes
ophthalmoplegia
cerebellar ataxia
posterior column dysfunction
vit e deficiency
tubular nephropathy - high urine Ca and P rickets hepatomegaly failure to thrive fasting hypoglycemia cataracts increased glycogen levels autosomal recessive GLUT2 disorder - glucose transporter problem
fanconi bickel syndrom
treatment of fanconi bickel syndrom
vit d
uncooked conrstarch
electrolyte replacement
polyhydramnios
presents first few weeks with severe diarrhea
dilated bowel loops
metab alkalosis
hypo Cl, Na, K
diarrhea tend to regress with age
treated with PPI, cholestyramine, butyrate
congenital chloride diarrhea
polyhydramnios massive secretory diarrhea severe met acid alkaline stools hypoNa
congnital sodium diarrhea
weaned from breastfeeding anorexia diarrhea failure to thrive humoral and cell mediated immunodeficiency dermatitis neuro abnormalitites poor wound healing
acrodermatitis enteropathica
zinc malabsorption
kinky hair seizuree hypothermia apnea cutis laxa hypopigmentation
menkes disease
copper malabsorption
most common cause of diarrhea US
rotavirus and norovirus
pesticide
organophosphate poisoning
SLUDGEM (salivation, lacrimation, urination, defecation, gastrointestinal motility, emesis, miosis)
increase acetylcholine
activate parasympathetic
cholera and ETEC activate ___ to cause diarrhea
adenylate cyclase
diarrhea that have blood and leukocytes in stool
causes ab cramps, tenesmus and fever
salmonella shigella campylobacter yersinia enterocolitis EIEC or EHEC or shiga e coli vibrio parahaemolyticus
shigatoxin producing e coli
e coli o157:h7
treatment to minimal dehydration
<10kg 60-120ml for each stool/vomiting
>10kg 120-240ml for each
treatment for mild to mod dehydration
50-100ml/kg over 3-4 hours
THEN
<10kg 60-120ml for each stool/vomiting
>10kg 120-240ml for each
treatment for severe dehydration
20ml/kg bolus
THEN 100ml/kg over 4 hours ORS or D5 0.45Nacl at TWICE FM
THEN
<10kg 60-120ml for each stool/vomiting
>10kg 120-240ml for each
via NGT or D5 0.45%Nacl + 20meqkcl
WHO ORS
75meq Na 75mmol glucose 20meq K 65meq Cl 10meq citrate 245mosm per liter
zinc in diarrhea
<6mo 10mg/day
>6mo 20mg/day
10-14 days
racecadotril is
enkephalinase inhibitor
doc for shigella
cipro
doc for EPEC, ETEC, EIEC
cotri
cipro
doc for salmonella
ceftri
doc for yersinia
doxycycline
doc for campylobacter
azithromycin
doc for clostridium difficile
metro
doc for entamoeba
metro
doc for giardia
metro
doc for cryptosporidium
nitazoxanide
doc for blastocystis
metro
past history of AGE
sensitivity to food allergens
disaccharidase deficiency
reinfection
postenteritis syndrome
exocrine pancreas hypoplasia neutropenia bone changes intestinal protein loss low serum trypsinogen
shwachmann diamond syndrome
recurrent ab pain defined as
3 epsiodes in 3 months with impairment of fxn
viscera innervated by
vagal
splanchnic
age of appendicitis
sex predominance?
12-18
boys
___ location of appendicitis leads to slower course
retrocecal
single most reliable finding in appendicitis
localized abdominal tenderness
psoas sign for
retrocecal appendicitis
obturator sign for
pelvic appendicitis
pediatric appendicitis score
<2 unlikely
>8 likely
fever 38c 1 anorexia 1 nausea 1 cough tenderness 2 RLQ tenderness 2 migration of pain 1 leukocytosis >10 1 PMN >7.5 1
utz criteria to dx appendicitis
wall thickness >6mm luminal distention lack of compressibility complex mass RLQ fecalith
ct scan findings appendicitis
distended thick walled appendix
inflammatory streaking of surrounding mesenteric fat
pericecal phlegmon or abscess
mittelschmerz
rupture of ovarian follicle causes pain
pathogens implicated with appendicitis
bacteroides clostridia poptostreptococcus e coli psuedomonas enterobacter klebsilla
antibiotics in appendicitis
simply unperforated: cefoxitin
perforated: ampicillin, gentamycin, clinda or metronidaole)
Autosomal recessive uridine diphosphogluconurate glucuronosyltransferase (UGT1A1) problem Does not conjugate bili Kernicterus in almost all Jaundice first 3 days of life High unconjugated bili
Crigler najjar
Autosomal recessive
uridine diphosphogluconurate glucuronosyltransferase (UGT1A1) problem
Episodes of jaundice may be triggered by stress such as exercise,menstruation, or not eating
High unconjugated bili
Gilbert disease
anomalies in sacrum assoc with anomalies in kidney/urinary tract
caudal regression
organisms in perianal abscess
e coli, klebsiella, staph, bacteroides, clostridium, veillonella
difference between internal and external hemorrhoids
internal hemorrhoids above the dentate line present as bleeding and prolapse; external hemorrhoids below dentate line present with pain and itching
rectal prolapse where all layers involved
procidentia
pathogen in pilonidal abscess
staph and bacteroides
hernias occur most at
1st year of life
highest risk of srtangulation hernia at
1st year of life
predmoinance hernia sex
male
testes start to descend by
28wks aog
completion of testes descent
28 to 36 weeks aog
__% of inguinal hernias occur on right side
60%
functional unit of pancreas
acinus
mitochondrial DNA mutation affecting oxidative phosphorylation, severe macrocytic anemia, thrombocytopenia, pancreatic insufficiency
pearson syndrome
exocrine pan- creatic de ciency, aplasia or hypoplasia of the alae nasi, congenital deafness, hypothyroidism, developmental delay, short stature, ectoder- mal scalp defects, absence of permanent teeth, urogenital malforma- tions, and imperforate anus.
johanson-blizzard syndrome
direct testing of pancreas
trypsin, chymotrypsin, lipase, and amylase obtained via triple lumen tube OR 72 hr stool collection for quantitative analysis of fat content is the gold standard for the diagnosis of malabsorption
most common etiologies of pancreatitis
blunt ab trauma, multisystem disease, biliary stones, drug toxicity
drugs that cause pancreatitis
valproic acid, l-asparaginase, 6 mercaptopurine, azathiprine
bluish discoloration around umbilicus in pancreatitis
cullen sign
bluish discoloration around flank in pancreatitis
grey turner sign
__ is test of choice for pancreatitis
lipase
labs associated with pancreatitis
elevated GGT amylase lipase bilis glucose, hemoconcentration, coagulopathy, hypoCa
causes of chronic pancreatitis
mutation in PRSS1 gene, cystic fibrosis, hyperlipidemia, hyperparathyroidism, ascariasis, autoimmune pancreatitis, juvenile tropical pancreatitis
normal liver size
4.5-5cm at 1week old, 7-8cm for boys and 6-6.5cm in girls at 12 years old
normal gallbladder length
1.5-5.5cm (average 3cm) in INFANTS and 4-8cm in adolescents
clinically apparent jaundice occurs at level
2-3mg/dL in kids, 5mg/dL in neonates
factors favoring ascites
decreased colloid vascular pressure, increased capillary hydrostatic pressure, increased ascitic fluid colloid pressure, decreased ascitic fluid hydrostatic pressure
hypoxemia, intrapulmonary vascular dilations, and liver disease
hepatopulmonary syndrome
utz finding of biliary atresia
small or absent gallbladder, nonvisualization of common bile duct, trangular cord sign
idiopathic familial intrahepatic cholestasis, lymphedemaof lower extremities
aagenaes syndrome
autosomal recessive, progressive degeneration of liver and kidneys, generalized hypotonia and retardation, hepatomegaly, renal cortical cysts
zellweger (cerebrohepatorenal syndrome)
increased iron deposition in liver heart and endocrine but no increase in iron stores of reticuloendothelial system, alloimmune disorder where maternal antibodies target fetal liver
neonatal iron storage disease or neonatal hemochromatosis
final step in bile acid synthesis, catalyzed by
conjugation with glycine and taurine; bile acid coA ligase
most common syndrome with intrahepatic bile duct paucity
alagille syndrome
broad forehead, deep set widely spaced eyes, long straight nose, underdeveoped mandible, cardiac , tubulointerstitial nephropathy, vertebral defects, short stature, pancreatic insufficiency, defective spermatogenesis
alagille syndrome
cardiac lesions associated with alagille syndrome
usually peripheral pulmonic stenosis, tof, pulmonary atresia, vsd, asd,coa
most common form of biliary atresia
obliteration of the entire extrahepatic biliary tree at or above porta hepatis
histopath biliary atresia
bile ductular proliferation, presence of bile plugs, portal or perilobular edena and fibrosis, basic hepatic lobular architecture intact
histopath neonatal hepatitis
diffuse hepatocellular disease with infiltration of inflammatory cells, bile ducts intact
kasai
hepatoportoenterostomy
best time to do kasai
8 weeks
autosomal recessive, defect in hepatocyte secretion of bilirubin glucoronide, liver histopath normal architecture but hepatocytes contain black pigment
dubin-johnson syndrome
autosomal recessive, degenrative changes in brain and liver, kayser fleischer rings in cornea, coombs negative hemolytic anemia
wilson disease
pathophysio of wilson disease
gene for biliary copper excretion and copper incorporation to ceruloplasmin defective
during hemolytic episodes in wilson disease, what are elevated
urinary copper excretion and serum copper levels are elevated
treatment of wilsons disease
penicillamine, decrease dietary copper
what are side effects of penicillamine
decrease vit b6, goodpasture syndrome, sle, polymyositis