GI Flashcards
(41 cards)
Difficulty swallowing
Feeding refusal
Vomiting
What should this raise concern for?
Foreign body ingestion
Coins = #1
Flex endoscopy = dx and tx
Observe only if pt is NOT symptomatic
Intussusception
- what is it
- age group
- triggers
- sx
- dx
- tx
Telescoping of one bowel into another
Usually between 6-24 mo age
Triggers:
- preceeding viral infections –> Peyer patches hyperplasia
- Meckel’s diverticulum
- Polyps and hematomas (HENOCH-SCHONLEIN purpura!)
If kid is older and getting intussusception, should think about pathologic lead point like Meckel’s diverticulum
Sx:
- periodic pain (crampy, colicky)
- emesis before ab pain
- currant jelly stools (late finding)
- sausage shaped mass in RUQ (invagination of ileum into colon causes obstructive mass to be found in RUQ)
Dx
- Ultrasound will discover target sign
- -> 100% sen and specific during period of pain
- Barium enema will see coil spring sign
Tx
- air enemas
- water soluble contrast enema
Cleft lip cause
Medial nasal and maxillary processes fail to join
Cleft palate cause
Failure of palatal shelves to fuse
Black hairy tongue
result of elongation of filform papillae
Secretory Diarrhea
Binds receptor on epithelium to induce diarrhea
Watery
Large volume
Normal osmolarity - electrolyte loss
Persists even w/o PO intake
Causes:
- cholera
- toxigenic E coli
- neorblastoma
- C diff
- cryptosporidosis
Osmotic diarrhea
2/2 ingestion of poorly absorbed solute or one not absorbed due to defect (eg lactase deficiency)
Lesser volume
Dec diarrhea w/ fasting
Increased osmolarity - free fatty acids released from CHO fermentation
Motility disorders
Loose to normal appearing stool
Ex:
- IBS
- thyrotoxicosis
- infection
Mucosal inflammation
Decreased mucosal surface area and colonc reabsorption, increased motility
- Blood and WBC in stool (dysentery)
Ex:
- Celiac
- salmonella
- shigella
- amebiasis
- rotavirus
Obstipation
Absence of bowel mvmts
What should you consider in neonate w/ constipation?
HIrschsprung until proven otherwise!
Dx hirschsprung
Bx of rectosigmoid region
- no ganglion cell
Barium enema - megacolon
Encopresis
voluntary or involuntary fecal soiling in children who have usually already been toilet trained
Anal tone in Hirschsprung
Normal
No rectal stool present
Duodenal atresia
Obstruction 2/2 failure of recanalization of duodenal lumen
20-30% pts w/ duodenal atresia have trisomy 21
1/10,000 live births
Duodenal atresia
- presentation
- dx
- tx
Usually present on 1st day life
- bilious vomiting
- no ab distension
- +/- hx polyhydramnios
Double bubble on xray
Tx w/ surgery
Gastroesophageal reflux + opsithotonus
What do you think of?
Sandifer syndrome
Standard for dx GERD
pH probe
Incidence hypertrophic pyloric stenosis
Risk factors
3/1000
Boys > girls (esp 1st born boy)
- Erythromycin
- formula feeding
Hypertrophic pyloric stenosis
- presentation
- dx
- tx
Nonbilious projectile vomiting > 3 wks old
Olive in abdomen palpated
+/- jaundice, wt loss, dehydration
Dx
- Ab US - thickened pylorus
- barium swallow
- hypokalemic hypochloremic metabolic alkalosis
Tx
- fluid rehydration
- correct electrolytes
- surgery
Crohns disease
- presentation
- dx
- tx
- complications
Usually more extraintestinal manifestations than UC
Arthritis Wt loss Ab pain - crampy Diarrhea +/- blood Perianal disease (fistula)
Can occur anywhere along GI tract
Dx
- String sign w/ upper GI studies
- skip lesions
- fistulas
- increased ESR
- colonoscopy + bx to dx
Tx
- steroids
- aminosalicylates
- azathioprine + metronidazole for fistulas
- cyclosporine
- tacrolimus
- TNF alpha
Complications
- malabsorb
- FTT
- wt loss
Ulcerative colitis
- presentation
- dx
- tx
- complications
Usually only in colon
Blood diarrhea + mucus
Ab pain + tenesmus
Moderate = > 6 stools/day, fever, anemia, hypoalbuminemia
Severe = anemia, fever, leukocytosis, tachy
Pyoderma gangrenosum
Dx
- dx of exclusion
- sx present 3-4 weeks
- anemia
- endoscopy
- -> mucosa friable + bleeds easily
- NO skip lesions
Tx
- aminosalicylates
- sulfasalazine
- steroids
- surgery - total colectomy
Complications
- higher risk colon cancer
Meckel Diverticulum - what is it?
1 congenital anomaly of GI tract
Vestigial remnant of omphalomesenteric duct
Meckel diverticulum risk factors/etiology
2% infants 2 yo - peak incidence 2 types of tissue - ectopic gastric mucosa 2 cm size 2 ft from ileocecal valve