Gastrointestinal Textbook Information Flashcards
What is the primary function of the GI tract?
Digestion and absorption of nutrients
Since the gastrointestinal has an extensive surface area, what does it function mean?
It’s the major means of exchange between human organisms and the environment
What are some basic functions of the GI tract? (5)
Absorbs nutrients necessary to maintain metabolic processes and support growth & development
Aids with waste products
Fluid and electrolyte balance
Barrier to protect against bacteria
Provides detoxification while other routes may be immature in a child
What are the 3 steps on digestion?
- Digestion
- Absorption
- Metabolism
What are these 3 steps used for?
To help convert outside nutrients into nutrients the body can use
There are 2 forms of digestion which are?
Mechanical and chemical
What does mechanical digestion do?
When the bodies muscles and neuromuscular system helps aid and move food along the GI tract
Otherwise known as churn food
What does chemical digestion do?
Body uses cells and glands to help soften the food
Otherwise known as saliva and hydrochloric acid
Where does mechanical and chemical digestion start?
And provide example of how it helps us?
In the mouth
Mechanical - chewing & moving
Chemical - saliva
After the body does the mechanical movement of chewing and food and the chemical movement of soften it with saliva what is the next step?
Swallowing
What is another word for swallowing?
Deglutition
Swallowing/deglutition is important for the body what?
To pass food down safely into the esophagus and later into the stomach
What’s one super important thing to know about swallowing?
It’s voluntary
What is swallowing voluntary?
Because kids sometimes don’t want to eat something so they spit it right back out
However once it’s passed down the throat, further down into the GI tract, is this ability voluntary?
Nope
What does peristalsis mean?
Wavelike movement that helps squeeze food along the entire length of the alimentary tract
Moves food through the esophagus and lower esophageal spincter relaxes the food and enters the stomach
So it goes through the esophagus into the lower esophagus sphincter, which during this time is relaxed
What do you think happens once it enters the stomach, to the lower esophagus sphincter
And why do you think that?
It closes
To avoid causing the food to go back up
So the stomach breakdown the food obviously into small partials and watery secretions ( chyme )
What is the next step?
Go into small intestine or liver
So let’s say it goes into the liver, what is helping it breakdown?
The bile
Let’s say it goes into the pancreas, what is helping it breakdown?
Insulin
Where is the main site of absorption?
Large intestine
Assessment of gastrointestinal function!
What are some common consequences of GI disease ?
Malabsorption
Fluid and electrolytes
Malnutrition
Poor growth
What are the 4 most important things that a nurse should do in her assessment of the GI?
Height & weight
Intake and output
Abdominal examination
Simple stool and urine tests
The following information are terms that are needed when learning about the GI or any assessment
What is failure to thrive mean?
Declaration from established growth pattern or consistently remaining below the 5th percentile in the growth chart for weight and height
What is spitting up or regurgitation mean?
Passive transfer of gastric contents into the esophagus or mouth
What does vomiting mean?
Forceful ejection gastric contents
Involves a complex process under central nervous system control that causes salivation, pallor, sweating and tachycarida
Usually associated with nausea
What is projective vomiting?
Vomit accompanied by vigorous peristaltic waves
Associated with pyloric stenosis or pylorspams
What does nausea mean?
Unpleasant sensation vaguely refer to the throat or abdomen with an inclination of vomit
What does constipation mean?
Passage of firm or hard stools or infrequent passage of stool with associated symptoms of such as difficulty expelling the stools, blood streaked stools and abdominal discomfort
What does encopresis mean?
Overflow of incontinent stool causing soiling
Often caused by fecal retention or impaction
What does diarrhea mean?
Increase in the number of stools with increase water content as a result of alterations of water and electrolyte transport by the GI tract
What does hypo/hyper/absent bowel sounds mean?
Evidence of intestinal motility problems that may be caused by inflammation of obstructions
What does abdominal distention mean?
Protuberant contour of the abdomen that may be caused by delayed gastric emptying, accumulation of gas or stool, inflammation or obstruction
What does abdominal pain mean?
Pain associated with the abdomen that may be localized or diffuse
What does gastrointestinal bleeding mean?
Bleeding from an upper or lower Gi source
What does hematemesis mean?
Vomit of bright red blood
What does hematocheiza mean?
Is this Lower or upper gi bleed
Passage of bright red blood through rectum - lower gi bleed
What does Melena mean?
Is this lower or upper gi bleed
Passage of dark colored tarry stools caused by denatured blood
Upper gi bleed
What does jaundice mean?
Yellow coloration of the skin and sclera ( eye )
Associated with liver dysfunction
What does dysphagia mean?
Difficult swallowing caused by abnormalities in the neuromuscular function
What does dysfunctional swallowing mean?
Impaired swallowing resulting from central nervous system defects or structural defects of the oral cavity
What does fever mean?
Common manifeations in children
Just high temperature
Gastrointestinal disorders!!
Diarrhea
What is another word for diarrhea?
Encopresis
What is diarrhea?
Abnormal intestinal water and electrolytes imbalance
Diarrhea is normally more prominent where and in who?
Low income counties ( Asia and Africa )
Under the age of 5
Why is younger children more prone to getting diarrhea than older children?
There intestinal mucosa is more permeable to water than that of an older child. Therefore in young infants with increased intestinal luminal osmolaity caused by diarrhea. They are more likely to have fluid and electrolyte lost
Overall this means infants have more water in them so more water will be absorbed and so when they have diarrhea almost all will be lost
What’s the 3 big consequences of fluid and electrolytes loss in diarrhea?
Dehydration
Electrolytes imbalance
Metabolic acidosis
There are 4 types of diarrhea, which are?
Acute
Chronic
Intractable diarrhea of infancy
Chronic nonspecific diarrhea
What is acute diarrhea?
Sudden increase in frequency and chance in consistency of stools
What are some causes of diarrhea? (4)
(Bacteria
Viruses
Parasites) forgein organisms
Dietary changes
Antibiotics
Medications
What are some medications a child could be on that is causing them diarrhea ? (2)
Antibiotics
Laxative
What are some examples of forgein organisms that can cause diarrhea ? (3)
Bacteria
Parasites
Viruses
It’s important to note that usually acute diarrhea is self limited within what time frame?
14 day (2 weeks)
Without treatment
What is chronic diarrhea?
Increase in stool frequency and increase water content with duration more than 14 days
What are some common causes of chronic diarrhea?
Malabsorption syndromes
Inflammatory bowl disease
Immunodeficiency
Food allergy
Lactose intolerance
What is intractable diarrhea of infancy?
How long is it?
What is the most common cause?
Syndrome that occurs within the first few months of life
Longer than 2 weeks
Acute infectious diarrhea that wasn’t treated well
What is chronic nonspecific diarrhea, irritable colon of childhood or toddlers diarrhea?
Is there any problems with this?
So what’s the cause?
Loose stools and often undigested food particles that last longer than 2 weeks
Not really
Usually poor dietary habits
CNSD usually can be associated with what other disease?
Celiac
So no gluten for these kids
I wanted to point this out, rotavirus is a virus that’s famous for causing diarrhea in young children, usually below the age of 5. However there is something we can do to prevent this, which is?
VACCINE!!!!
At 2 months !!
What is the pathophysiology of diarrhea?
Pathogens increase intestinal secretions
They attach to the cell surface
And keep producing a lot of secretions and poop make softer
And now diarrhea
What are some basic diagnostic evaluation?
History
Urine culture
Stool culture
Height and weight
Vital signs
What are therapeutic management we will do to these children? (3)
Fluid and electrolyte imbalance
Rehydration
Reintroduction of an adequate diet
What the best way for treating diarrhea in children?
Oral rehydration therapy
How does oral rehydration therapy work?
And give me an example of what we are using in this?
Helps maintain good fluid balance
Pedialyte
In children who are more sick and are losing a lot fluids we instead do what?
Usually this more invasive and costly because of what?
Oral rehydration solutions
Goes in IV
Overall what are some basic patient education we want to teach parents on diarrhea? (3)
- monitor number of wet diapers/voiding
- hand washing
- no temp rectal because it increase stool to come out
Why don’t we want to give caffeine to these kids with diarrhea?
Why don’t we want to give BRAT diet to infants?
It has a mild diuretic effect
They have a weak immune system and it has a lot of sodium that there body doesn’t need cause they practically are filled with water
So that causes fluid excretion
How are we going to teach patients on how to give ORT?
Small quantities and frequent intervals
Gastrointestinal problems
Constipation!
What is constipation defined as?
Alternation in the frequency, consistency or easy of passive stool
It is defined as unsairficatory defection due to infrequent stools, difficult stool passage or perceived incomplete defections.
The diagnose of constipation may vary by age, however it’s important to note that under the age of 4 it’s considered by?
Less than 3 poops a week
What does obstipation mean?
Extremely long intervals between defections
What does encopresis mean?
Constipation with fecal soiling
What are some common causes of constipation overall? (3)
Structural disorders
Systemic disorders
Medications
Majority of children have idiopathic or functional constipation which means?
No real underlying cause of it
What or how can chronic constipation occur ? (4)
Environmental
Psychosocial factors
Withholding/ avoidance
Transient illness
Newborns constipation
What is the first poop?
When does it come out: like time?
Meconium
24-36 hours of life
Newborn constipation
What is Meconium plug?
How can we help?
What is Meconium ileus?
How can we help?
Also the first sign of what disease?
Obstruction near the end of the butt
Usually due to lack of water content
- Irrigations can help
Obstruction inside the intestine
- surgical removal
- first sign of cystic fibrosis
Infancy constipation
What is it usually caused by?
Less common in who?
When changing the milk, either from human or cow Milk to instead now whole milk, it’s common for an infant to get constipation, so how can we help aid this?
When a bottle feed baby produces a hard stool, usually that’s a sign of what?
Dietary practices
Breast feed babies
Vegetables and fruits
Anal fissure
Childhood constipation
What is it mainly caused by?
Explain this ^
Environmental changes
The child is now able to control their Bowels and they may feel awkward to poop somewhere else that isn’t their home, so they perform withholding behaviors.
Therapeutic management behind constipation
What can we use to help aid a child?(2) medication wise ^
Miralax & enemas
How can we help an infant with constipation?
And avoiding what?
Stools softeners
The usuage of rectal temps since it’s can cause pain if the infant has an anal fissure
How can we help children school age avoid constipation?
Encouraging and education on the importance of pooping!
What’s the overall importance of constipation that should be encouraged for everyone?
INCREASE FIBER!!
Recommend daily fiber intake is based on what and how much?
Age in years + 5g of fiber per day
Mineral oil is great help with constipation as it does what?
However should not be used for who and why?
Cleans out and disimpacts the intestine
Children under the age of 1 as for risk of aspiration
What are some examples of fiber foods?
Beans
Apples
Beets
Broccoli
Dates
Wheat flours
Carrots
Gastrointestinal problems
Vomiting !
What does vomiting mean?
The forceful ejection of Gastric contents through the mouth
What are some causes of vomiting ?
Acute infectious diseases
Increase intestinal pressure
Toxic ingestions
Food intolerance
Allergies
Mechanical obstruction of the GI tract
What are some complications that can occur from vomiting? (3)
Notes
Mallory Weiss syndrome
( small tear in the distal esopheal muscosa )
Dehydration
Malnutrition
Aspirations