GI Flashcards
Dehydration
Water and electrolyte imbalance occur more frequently and more rapidly in infants than in older children and adults
Infants are less prompt to adjust
Increased ECF until age 2
They have more water, Na, Cl outside the cell than inside the cells
Fluid losses
Fecal loss, urinary loss, insensible loss with the heat
humidity and if the child has a fever all contribute to the imbalance
7mL/kg/day of water loss for each degree > 37.2C
Environment changes that impact fluids
Temperature
Dryness of air
Characteristics that make infants susceptible to fluid depletion
Increase surface area relative to their body mass, causing greater insensible loss
High rate of metabolism, so there’s a greater need for water to excrete through the kidneys
Immature kidney function, aren’t able to fully concentrate or dilute urine or regulate the electrolytes
Implications
Get dehydrated from concentrated formulas
Maintenance Fluids
100mL - first 10kg
50mL - second 10kg
20mL- remaining kg
Add to get total per day, then divide by 24 to find how many mL/hr
Compensating for dehydration in children
1.5x maintenance
Signs of fluid overload
Crackles in lungs
Bulging fontanels
Skin turgor
Edema
ECF concentrations
Na is mostly in the ECF
K is mostly intracellular
ECF volume is decreased, so is the Na as usually most is lost from ECF: replacement fluids should be mostly Na
Isotonic loss
Loss of extracellular water and Na, compensation so electrolytes are WNL (Na 130-150)
Primary form of dehydration
No movement between the ICF and ECF: decreased blood volume = shock
Most common in children
Can see in the skin, muscles, and kidneys
Will see hypovolemic shock symptoms
Hypotonic/Hyponatremia
More electrolyte loss than water loss causing water to move from ECF to ICF to help the body compensate resulting in a decrease blood volume and decreased Na
Hypertonic/Hypernatremia
More water loss than electrolytes or increase in electrolytes
Fluid shift from lesser concentration ICF to ECF to compensate and an increase in Na
More neuro signs than blood volume signs
Most dangerous and can occur when the child is given large amounts of fluid by mouth that contain large amounts of solute or in children that receive high protein NG feedings that place an excessive solute load on the kidneys
Dehydration: Nursing assessment
Weight (most important, reflection of acute loss, mL/kg of water loss anywhere from 50-100mL/kg) LOC changes (irritable, lethargic, decreased response to stimuli Skin turgor (decreased) Cap refill (greater than 2 or 4 for severe dehydration) Increased HR BP changes Sunken eye and fontanels Skin (mottled and cool) Specific gravity (>1.020) Intake and output (output is decreased) Dry mucous membranes No tears
Diarrhea cause: Infection
Rotavirus
Especially in infants who attend daycare
Most often transferred fecal-oral route
Infants are immune up to 3 mo because of Ab from mom
Seen in children 3-24 months
Vaccine that is given at 2, 4 months: 85% protection
Severe diarrhea
Diarrhea cause: Giardia parasite
Common in toddlers
Treated with Flagyl or Furoxone
Transmitted from diaper contamination or daycare setting
Diagnosis: swallow a string with a gel cap and retrieve the sting later and sample to stool to see if the parasite is on it
Diarrhea cause: Pinworm
Eggs are ingested or inhaled from crowded day cares
Hatch in upper intestines where they mate and the females migrate to the anus to lay eggs
Causes itching, the child will scratch and eventually make it to the mouth
Contamination 2-3 weeks
Live on the toilet seat, door knobs, food and linen
Treatment: Vermox in children that are 2yr and greater, repeat in 2 weeks if not gone
Must treat whole house
Diarrhea cause: Other
Toxic reaction to ABX or dietary ingestion
Diarrhea Prevention
Hand washing
keep clean diaper area
keep nails short
Goals of therapy with D/V
Assessment of fluid and electrolyte imbalance
Rehydrate
Treat etiology or underlying cause
Glucose intolerance Diarrhea
Stool is explosive and watery
Neutrophils and RBCs in Stool
From inflammation or gastroenteritis
Eosinophil in stool
A protein intolerance or parasite infection
Oral rehydration therapy/Oral rehydration solution
1st line treatment
Enhance and promote the reabsorption of Na and water to help reduce vomiting
Successful then don’t have to bring child to the hospital
Want to reduce the volume loss from diarrhea
Oral rehydration therapy/Oral rehydration solution: Special solution
Less costly than IV therapy
Less traumatic
Try to get the child rehydrated orally first
Rehydration
75-90mEq Na/L
Give 50 cc/kg for mild dehydration over 4-6 hr
Give 100 cc/kg for moderate dehydration over 4-6hr
Replacement/ Maintenance
40-60mEq/L
Pedialyte: 45mEq/L
After hydration
Start adding water, breast milk, lactose free formula
Continuous diarrhea
Weigh the diaper and replace that volume of stool loss with ORS 1:1 replacement
IV hydration
Used if the child is severely dehydrated and/or in shock, vomiting so much that they are unable to ingest ORS, or if we need to replace abnormal loss, or if there is gastric distention and cant drink
IV hydration: Saline, dextrose, water
Usually infuse just saline
May need to add dextrose to it if we need to replace water because you cannot give water IV alone it needs to attach to the glucose molecule to help get the water into the cell
IV hydration: Bicarbonate
Will need to be added to the IV solution if the child is experiencing acidosis with dehydration
IV hydration: Rapid replacement
Isotonic or hypotonic loss is good but if its a hypertonic loss, then we can not do a rapid replacement due to the water intoxication
Our brain cells are the most sensitive to this
Start with NS or LR sometimes: 2mL/kg IV bolus is given over 20 minutes
Dehydration: Teaching
How to care for the child
Some vomiting is ok with ORT
Increased stools are ok with food ingestion
Monitoring of I&O at home is needed
Dehydration: Nursing care in hospital
IV therapy and maintenance is out job (pay attention to it)
Accurate weight done QD or BID
NPO possible if child is lethargic, but we try to feed them a best as we can
If IV then they are most likely not able to use mouth
Strict I&O
Frequent vitals
Infection contro
Lab obtainment and monitoring
Stool samples
Skin assessment and take care of skin
Dehydration: Nursing diagnosis
Fluid Volume deficit related to excessive GI losses in the stool or the emesis.
Altered nutrition: less than body requirements related to diarrheal losses and inadequate intake.
Risk for transmitting infection related to microorganisms invading GI tract.
Impaired skin integrity related to irritation caused by frequent loose stools
Anxiety/fear related to separation from the parents, an unfamiliar environment, distressing procedures
Altered family processes related to situational crisis and/or a knowledge deficit
Water intoxication
Can cause CNS symptoms due to hypoNa
Water intoxication: Caused by
IV fluid overload Rapid dialysis Tap water enemas (not done much anymore) Incorrectly mixed fluids Excessive water ingestion
Constipation
Trouble with defecation for 2 weeks or less than 3 stools/week or painful bowel movement with blood streaking
Constipation: Causes
Newborn
Hirschsprung Disease
Encopresis
Psychosocial
Constipation: Newborn
When the child doesn’t pass Meconium stool
Supposed to pass and is usually passed within first 24-36 hr of life
Constipation: Hirschsprung Disease
Lack of innervation to lower colon causing stool to sit in bowel
Referred to as megacolon: part of the lower colon that becomes very large because the stool just sits there
Hirschsprung Disease: Diagnosis
In the first months of life
Child is very constipated and the older children will pass a ribbon like stool that is very foul smelling
Hirschsprung Disease: Treatment
Surgery is done to remove the part of the bowel that is not innervated
Child might have a colostomy for a temporary time period
Constipation: Encopresis
Constipation with fecal soiling (involuntary defecation, especially associated with emotional disturbance or psychiatric disorder)
Child might be afraid to go to the bathroom, could be painful, may deliberately try to hold it in
Over time the rectum stretches and the stool is accommodated and the urge to defecate passes
Finally has a bowel movement and its very painful and this reinforces the desire to hold the stool
Constipation: Psychosocial
Stress in the family
Life or family changes
Fear of school bathrooms
Always being in a hurry because your parents always rush you
Constipation: Treatment
Slow down child life so they don’t have to always feel hurried
increase child’s fiber, fluids, maybe give child a stool softener, with infants adding corn syrup to their formula can help
Gastroesophageal Reflux (GER)
Is the transfer of the gastric contents into esophagus- problem is with a relaxation of lower esophageal sphincter
Gastroesophageal Reflux (GER): Complications
Aspiration
Esophageal irritation, bleeding
Gastroesophageal Reflux (GER): Children who are susceptible
Premature BPD (bronchopulmonary dysplasia) CF Asthma CP (cerebral palsy) TEF (tracheoesophageal fistula) repair On ECMO (ICU) Neural disorders Scoliosis
Gastroesophageal Reflux (GER): Infants
Resolved by 1 yr or max 18mo
Gastroesophageal Reflux (GER): Gold standard for diagnosis
24hr intra-esophageal pH monitoring done through an NG tube
Gastroesophageal Reflux (GER): Symptoms of Infants
Spitting up, vomiting, irritability, arched back due to the pain of movement down esophagus, weight loss, FTT, respiratory problems (aspiration of gastric contents)
Gastroesophageal Reflux (GER): Symptoms of Older children
Heart burn, abdominal pain, coughing, pneumonia if they are aspirating
Gastroesophageal Reflux (GER): Symptoms of Older children
Heartburn, abdominal pain, coughing, pneumonia if they are aspirating
Gastroesophageal Reflux (GER): Care of Baby
If still gaining weight then we don’t perform invasive procedures - just try thickening formula or changing to the hypo-allergenic formula
If they aren’t gaining weight then add medication and consider surgery
Gastroesophageal Reflux (GER): Step 1
Feeding alteration
Small frequent feedings
Thicker formula (1tsp or tbsp of rice cereal per ounce depending on severity) helps to decrease vomiting
Weigh the risk with the benefits and monitor closely
Try a trial hypo-allergenic formula to feed
May need to place an NG or G-tube if severe
Gastroesophageal Reflux (GER): Step 1
Feeding alteration
Small frequent feedings
Thicker formula (1tsp or tbsp of rice cereal per ounce depending on severity) helps to decrease vomiting
Weigh the risk with the benefits and monitor closely
Try a trial hypoallergenic formula to feed
May need to place an NG or G-tube if severe
Gastroesophageal Reflux (GER): Step 2
Positioning
Non prone position during sleep
Don’t use a car seat after eating (causes abdominal pressure)
Place them prone while awake
Older children lay on left side, stay upright for 30 minutes after eating by elevating them in their crib 30 degrees or putting them in in an infant seat
Dont lay baby flat
Burp the baby as often as needed to eliminate gastric pressure
Child is sitting up: food sits at the bottom of the stomach and not being pushed upward, childs feet more flat toward the ground then it’ll put pressure on the abdomen and pushes the food upward
Laying on back: very easy for food to back up into esophagus
Prone: food will sit at the bottom of the stomach toward the front and thus wont back up to the esophagus (only when baby is awake)
Gastroesophageal Reflux (GER): Step 3
Pharmacological
H2 antagonists: reduce the acid and prevent esophagitis
PPI: block the acid production, give 30 minutes before feeding
Reglan can be used limitedly due to SE
Gastroesophageal Reflux (GER): Step 4
Surgery
Nissen fundoplication: passage of the gastric fundus behind the esophagus to encircle the esophagus
Support the parents and offer education about medications and surgery (positioning of child, how to manage spitups, if rice in bottle enlarge the nipple slightly, avoid vigorous play after feeding, do not feed the child just before bed time, give medications 30 min prior to breakfast and evening meals)
Appendicitis: Complication
Necrosis and perforation into the perineum causing peritonitis and ileus, hypovolemic shock
Appendicitis: Symptoms
Fever, vomiting, increased WBC, abdominal pain (first around the belly button then migrates to the right side, then at the McBurney’s point)
if pain has a temporary relief then it erupted/perforated- pain will gradually return (usually 8hr after pain is felt on the right)