Infant Nutrition Flashcards
(197 cards)
Maximal GI tract growth and differentiation happens from week _____ and onward of gestation
28
Premature infants (born before ____ weeks gestation) have reduced ___________________
-37
GI function
Premature infants born before ____ weeks gestation have especially reduced GI function
32
What is impacted by premature birth affecting gastrointestinal maturation? (7)
- sucking
- swallowing
- gastric emptying
- intestinal peristalsis
- defecation
- production of saliva
- production of pancreatic and hepatobiliary secretions
Infants born before ____ weeks cannot coordinate sucking/swallowing/breathing and may need tube feeding until these reflexes mature
34
Liquid nutrition is appropriate for all infants until which reflexes/movements mature?
- sucking
- swallowing
- breathing
- complex tongue movements
Maturation of sucking, swallowing, breathing, and complex tongue movements typically occurs at age ______ months (after full gestation)
4-6
When can solid foods be safely added to the diet?
4-6 months
Premature infants may have less _______________ and thus decreased surface area for digestion
small intestine
Adult length of the intestine is reached by age
4
Why can premature and full-term infants digest most carbs?
Production of many intestinal enzymes are sufficiently mature at birth
______________ activity starts later in fetal life and then begins to decline after age of three
lactase
Why don’t more infants have trouble with lactose containing formula?
salivary amylase helps break it down
Role of Lactose
Unabsorbed lactose that enters the colon helps with the growth of helpful bacteria while suppressing the growth of more pathogenic organisms
How does lactose help with the growth of helpful bacteria?
lactose is fermented by bacteria
This creates an acidic environment that favors the growth of lactobacilli
The acidic environment created by lactose promotes __________________ and prevents _______________________
- water absorption
- osmotic diarrhea
Early in life we need frequent feeding every __________ hours
2-3
How small is a newborn’s stomach? (5 lb 8 oz)
Max 20 mL - 90 mL
As infants grow, so does their stomach. By 1 month the stomach can hold
90 mL - 150 mL
Human milk empties the stomach ________ than that of infant formula; thus, human milk fed infants typically eat _______ often than formula fed infants
- faster
- more
Kidney maturation plays an important role in nutrition because it determines the ability of the kidney to ______________________
excrete a solute load
After birth, rate of _________________________ increases until growth stops (around 20 yrs old)
glomerular filtration
Solute load
Mass of solute that enters the body of a certain amount of time
Renal Solute Load
Solutes of endogenous or dietary origin that requires excretion