The Child with a Gastrointestinal Alteration Flashcards
Upper Gastrointestinal (GI) System
* Mouth, esophagus, stomach
- Digestive process begins in mouth
- Propel food through GI system for nutrition absorption
- Upper esophageal sphincter (UES) prevents reflux of esophageal contents into pharynx and lungs and prevents esophageal distention during respirations
- Lower esophageal sphincter (LES or cardiac sphincter) prevents reflux of gastric contents into lower esophagus
Esophagus @ birth = 10 cm length versus Esophagus in adults = 18-25 cm
- Peristalsis moves the bolus through esophagus into stomach
- As LES and pylorus contract - stomach muscles churn contents mixing with digestive juices to form CHYME
- Chyme moves from pylorus into duodenum
Lower Gastrointestinal (GI) System
* Duodenum, liver, gallbladder, pancreas, jejunum, ileum, cecum, appendix, ascending colon, transverse colon, descending colon, sigmoid colon, rectum, and anus
- Functions - digestion and absorption nutrients; detoxify and excrete unwanted waste; aid in fluid and electrolyte balance
- In ___, pancreatic enzymes and bile further breakdown chyme
duodenum
Pancreas secretes:
> Enzymes to aid digestion
> Glucagon and insulin to control motility and absorption
Liver functions:
> phagocytosis; bile production; detoxification; glycogen storage and breakdown; and vitamin storage
___
> Stores bile for secretion into duodenum until stimulated by the presence of fat in duodenum lumen
Gallbladder
* Jejunum and ileum
- Absorption of all nutrients and vitamins occurs through diffusion and active transport
- Absorption of vitamin B12 occurs only in the terminal ileum
* Large intestine
- Starts with the cecum - begins at the ileocecal valve which prevents reverse peristalsis into small intestine
- Major function is water reabsorption - occurs mostly in the cecum and ascending colon
- Intestinal bacteria ferment remaining carbohydrates and aid in synthesis of vitamin B and K
* ___
- Where stool is stored until distention of the rectal walls initiates the defecation reflex
Rectum
Prenatal Development
* Primitive gut develops into 3 sections of the fetal GI tract
___ - duodenum to transverse colon
___ - descending colon, rectum, and anal canal
___ - pharynx to duodenum including liver, pancreas, and biliary tract
Midgut
Hindgut
Foregut
* Problems in the development of any of these sections may lead to malformations and diseases
Laboratory & Diagnostic Tests - Blood (LFT’s [venipuncture])
AST (aspartate transaminase)
Child <9 __-__ U/L
Child >9 __-__ U/L
15-55
5-45
Alanine transaminase (ALT)
__-__ U/L
5-45
Total Bilirubin
__-__ mg/dL
0.2 - 1.0
Ammonia
__-__ mcg/dL children
__-__ mcg/dL newborns
29-70
90-150
Endoscopy
Fiberoptic Upper GI endoscopy
* Views lining of esophagus, stomach, initial portion of duodenum
* Can obtain tissue for biopsy or cultures
* Prep - teaching; NPO at least 6 hours prior; conscious sedation; monitor respiratory function during procedure
Biopsy (gastric, jejunal, rectal, liver)
* Teaching; bowel cleansing; sedation
Colonoscopy
* Colon viewed with fiberoptic scope inserted through rectum
* Detects mucosal changes
* NPO, bowel cleansing, and conscious sedation
Radiologic Examinations
* Abdominal flat plate
- Anterior/posterior views
- Demonstrates presence of gas, stool, patency
* Barium swallow examination
- Radiopaque contrast or air is swallowed
- Identifies esophageal abnormalities or swallowing issues
- Prep teaching; NPO 2-4 hrs pre-procedure
- Adequate fluid intake after to prevent barium impaction
* Upper GI examination
- Radiopaque contrast swallowed
- To determine gastric emptying
- NPO 4 hours prior
- Adequate fluid intake after to prevent barium impaction
* CT scan
- Oral, IV, rectal contrast
- Identifies inflammatory conditions such as appendicitis
* Barium Enema
- Radiopaque contrast inserted via rectum
- To determine bowel patency or abnormalities
- NPO and bowel cleansing required
- Adequate fluid intake after to prevent barium impaction
Other
Ultrasound
* Identifies anatomic abnormalities or inflammatory conditions
* Full bladder needed
Breath hydrogen test
- Carbohydrate solution is given by mouth and exhaled
- Breath samples are collected every 3 hours
- Identifies maldigestion or malabsorption issues
- NPO 4.5 hours prior
- Facemask used to collect expired air
Stool
Culture & Sensitivity (C&S)
> Identifies organisms to determine antibiotic therapy
> Deliver sample to lab immediately
Occult Blood (guaiac, Hematest)
> Used in inflammatory conditions and bowel necrosis
> Blue color is positive
Ova & Parasites (O&P)
> To identify enteric parasites when diarrhea or abdominal pain is present
Urine
Urobilinogen
- Dipstick or lab analysis to determine bile products in urine
- Used to determine hepatic dysfunction or obstruction
Major Digestive Enzymes
Pediatric Differences in the GI System
* Infants have minimal saliva
* Swallowing is not under voluntary control until 6 weeks
* Infants and children have less stomach capacity
> Stomach lies transversely and is horizontal in the infant’s abdomen
> The abdomen is round in infants and toddlers
* Peristaltic waves may reverse in infancy, causing regurgitation and vomiting
> Peristalsis is faster; food remains in the stomach for a shorter period
* Hydrochloric acid concentration is low until school-age
* Fever increases the rate of propulsion
* Immature neonatal liver not efficient in detoxifying ability - results in less vitamin and mineral breakdown than in older children
* The large intestine is relatively short, with less epithelial lining to absorb water from a fecal mass so stools have a soft consistency and peristalsis is more rapid
Stomach Capacity by Age Group
* Prenatal Developmental Disorders
* Motility Issues
* Inflammatory or Infectious Conditions
* Obstructive Disorders
* Malabsorption Conditions
* Hepatic Disorders
Cleft Lip & Palate
Pathophysiology
* Results from an embryonic developmental failure
* An abnormal opening in the lip, palate, and nasal cavities
Manifestations
Cleft lip - notched vermillion border, variable size clefts with dental disorders
Cleft palate - nasal distortion, midline or bilateral cleft from the uvula and soft and hard palates and exposed nasal cavities
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Results from primary palatal shelves (processes) that fail to fuse at 7-12 weeks gestation
Cleft PALATE
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Medial nasal and maxillary processes fail to join at 6-8 weeks gestation
Cleft LIP
Cleft Lip & Palate - Therapeutic management
* Based on severity
* First intervention - modification of feeding techniques to allow growth
> Goal is to decrease required energy to take in adequate nutrition
* Multiple surgeries at different stages of growth
> Cleft lip surgery by age 3-6 months
> Cleft palate surgery individualized based on degree of deformity - closure done by 6-24 months
After surgery: Goal is to maintain sutures clean, intact, and avoid tension
* Gentle aspiration of nasopharynx may reduce complications - atelectasis (collapse of lung or section of lung d/t tiny alveoli not filling up with air)
* Ongoing therapy - dental procedures, recurring otitis media (may lead to hearing loss), speech therapy, emotional issues, cosmetic surgery
* Breastfeeding may be possible for infants with cleft lip
* Infants with cleft palate may have difficulty creating the negative pressure to breastfeed
Cleft lip & palate Nursing Diagnosis
* Poor nutritional intake: less than body requirements related to inability to suck and to surgical repair
- Keep feeding to under 30 minutes with frequent rest periods for burping
- Small cleft lip and palate may do well with breastfeeding
- Alternative feeding devices: soft, plastic compression bottle (reduce sucking force), longer nipple able to swallow milk without entering the nose with larger bore
- Burp infant frequently and keep in upright position (minimizes air swallowing and GI flatus and minimizes risk of aspiration); avoid car seat feeding - not able to assist if infant chokes
Post-op keep straws, pacifiers, spoons, or fingers away from mouth for 7-10 days
DO NOT take oral temperature
After repair of cleft palate - should use short nipples to avoid nipple contact with palate sutures or syringe with rubber tip may be used to avoid contact with palate
Deficient knowledge about feeding techniques and surgery related to unfamiliarity with the information
- Be an advocate for your patient
- Provide information and let the healthcare provider know that patient needs more clarification regarding surgical procedures
Risk for skin breakdown related to surgical repair
* Cleanse sutures according to protocol (usually sterile water or saline with cotton swab… especially after feedings)
* Apply antibiotic ointment as ordered to lip
* Use elbow restraints (no-no’s) to keep infant from touching sutures (6-8 days); make sure to remove restraints every 2 hours for 10-15 min - prevent accidental rupture or tear of sutures
* Do not brush teeth for 1-2 weeks
* Keep supine or in infant seat
* Observe for any signs of infection - redness, swelling, excessive bleeding, drainage, respiratory distress, or fever
* Rinse the child’s mouth with water after feedings after a palate repair
