ch 25 GI dysfunction Flashcards
5 types GI secretions
-enzymes
-hormones
-hydrochloric acid
-mucus
-water and electrolytes
what is absorbed from the large intestine
water
sodium
primary purpose upper GI system (mouth, esophagus, stomach)
-take in food and fluids
-begin the digestive
process
-propel food into the
intestine
primary purpose lower GI system (Duodenum, liver, gallbladder,
pancreas, jejunum, ileum, cecum,
appendix, colon, rectum, and
anus)
-digest and absorb nutrients
-detoxify and excrete unwanted waste
-aid in fluid and electrolyte balance
most common complications GI dysfunction in children
-malabsorption
-fluid and electrolyte disturbances
-malnutrition
-poor growth
4 types diarrhea
-acute
-chronic
-intractable
-chronic nonspecific
possible causes acute diarrhea
-infectious (bacteria, virus, parasite)
-illness (URI, UTI)
-med (Abx, laxatives)
-diet (excess sugar in formula or juice)
-functional (IBS)
-other enterocolitis (pseudomembranous, hirschprung)
possible causes chronic diarrhea
-malabsorption
-allergy
-immunodeficiency
-IBS
Tx diarrhea
-oral rehydration therapy (ORT)
-IV hydration
-assess and correct fluid and electrolytes
-Most important cause of serious Gastroenteritis in Children
-Most common cause of diarrhea associated hospitalizations
-spread through fecal oral route
rotavirus
S+S mild dehydration (5-6%)
-increased thirst
-slightly dry mucous membranes
Tx mild dehydration
-oral rehydration: 50 mL/kg over 4 hrs
-replacement of stool losses
S+S moderate dehydration (7-9%)
-dry mucous membranes
-sunken fontanels
-sunken eyes
-no tear production
-loss of skin turgor
Tx moderate dehydration
-oral rehydration: 100 mL/kg over 4 hrs
-replacement of stool losses
S+S severe dehydration (>9%)
signs of moderate dehydration +
-rapid thready pulse
-cyanosis
-rapid breathing
-lethargy
-coma
Tx severe dehydration
-IV fluids: bolus NS 20 mL/kg over 20 mins, LR 40 mL/kg/hr until pulse and LOC normal
-switch to oral rehydration as soon as possible
an eating disorder characterized by
compulsive and excessive ingestion of
both food and non-food substances for at
least one month
pica
frequently aspirated items
most common:
-peanuts
-nuts
-seeds
other:
-hotdogs
-vegetables
-metal/plastic objects
-bones
when should foreign ingested objects be removed
-if sharp object, magnet, or battery in esophagus (especially multiple batteries)
-if airway is compromised
-if in esophagus for 24+ hrs
conditions that may cause delayed passage of meconium in newborn
-hirschprung disease
-hypothyroidism
-meconium plug
-meconium ileus
inappropriate/involuntary passage of
feces, often with soiling
encopresis
Tx childhood constipation/encopresis
-miralax
-debulking of stool
-diet
-hydration
-exercise
what age can you give mineral oil
after 1 yo
risk of giving mineral oil
aspiration
longterm Tx constipation
phase 1 (3-5 days)
-oral clean out (mineral oil, polyethylene glycol, magnesium)
-enema clean out (milk and molasses, normal saline, microlax, mineral oil, hypertonic phosphate)
-NG lavage if hospitalized
phase 2 (6-12 months)
-oral laxatives (polyethylene glycol, mineral oil, lactulose, magnesium)
-high fiber diet
-increased fluids
phase 3
-gradual tapering laxatives
-high fiber diet
-increased fluids
Mechanical obstruction from inadequate motility of intestine
hirschsprung disease/ congenital aganglionic megacolon
Dx hirschprung disease
-xray
-barium enema
-anorectal manometric exam
-rectal biopsy
S+S hirschprung disease in newborn
-failure to pass meconium in first 1-2 days
-refusal to feed
-bilious vomiting
-abdominal distention
S+S hirschsprung disease in newborn
-failure to pass meconium in first 1-2 days
-refusal to feed
-bilious vomiting
-abdominal distention
S+S hirschsprung disease in infancy
-failure to thrive
-constipation
-abdominal distention
-V/D
S+S hirschsprung disease in childhood
-constipation
-*ribbonlike, foul smelling stools
-abdominal distention
-easily palpable stool mass
-visible persitalsis
possible complication hirschsprung disease
enterocolitis
-explosive watery diarrhea
-fever
-ill appearance
Tx hirschsprung disease
-surgery
Tx GER/GERD
-avoid offending foods
-surgery: nissen fundoplication
changes for infant:
-thicken feedings
-upright position
-frequent burping during feeds
-avoid overfeeding
when would a nissen fundoplication be indicated for GER/GERD
-aspiration pneumonia
-apnea
-severe esophagitis
-severe failure to thrive
Tx IBS
-general
-meds
-school considerations
-diet (fiber, fluids, identify triggers)
-meds (probiotics for diarrhea, PPI - nexium, provasid)
-inform school so they can have bathroom privileges
-keep change of clothes with them
hirschsprung disease periop teaching/care
-teaching colostomy
warnings for probiotics (preparation)
-don’t open and mix in room if pt has central line
-wear gloves
when do kids get rotavirus vaccines
2, 4, 6 months
when to avoid removal of foreign ingested body
if already in bowel and not sharp/batteries
first sign that patient may have CF at birth
delayed passing meconium
why could formula cause constipation
contains iron, causes constipation
who is hirshsprung disease more common in
males
down syndrome
when is Tx indicated for GERD (pathologic)
-failure to thrive
-resp problems
-dysphagia