Infancy Flashcards

(69 cards)

1
Q

What is infancy?

A

Birth to 1 year old
- During this time will usually triple weight and increase length by 50%
- Per unit size, nutrient needs greater than at any other stage of life

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2
Q

What are goals of nutrition during infancy?

A

Provide energy and nutrients to support rapid growth
- Growth rate and relative energy needs are higher during infancy than during any other phase of life
Lay basis for formation of goof eating habits
Start transition from feeding to eating

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3
Q

In the In the first few days after birth, an infant’s weight
typically:
A. Increases by about 5-10% of their birthweight
B. Decreases by about 5-10% of their birthweight
C. Stays about the same as their birthweight regardless of
whether they were fed formula or breastmilk

A

B. Decreases by about 5-10% of their birthweight

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4
Q

What is the newborn weight trajectory?

A

Surplus fluid loss
Meconium
Should regain weight by day 10-14

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5
Q

By approximately what age are infants expected to double
their birthweight
A. Two months
B. 4-6 months
C. 1 year
D. 2 years
E. 3-4 years

A

B. 4-6 months

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6
Q

What is the physical growth of infant?

A

Most rapid growth of entire life
- weight loss immediately after birth; regain by ~d 7-10
- double birth weight by 4-6 months; triple by 1 year; quadruple by 2.5 years

Weight gain due to increase in lean and fat tissue
- small sex difference

**Energy needs per unit body weight are ~triple those of adults **

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7
Q

What is the skeletal growth?

A

Length increases by 50% in first year
- Body calcium doubles
Under nutrition or repeated infections can lead to stunting b/c most of the energy goes toward fighting infections

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8
Q

What is stunting?

A

Condition where a child is too short for their age
May impair ability to reach both physical and cognitive potential, and increase risk of chronic disease later in life - not enough nutrient and energy

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9
Q

Why should you monitor growth & development for infancy?

A

Appropriate growth is one of the signs of good health
* Delayed or rapid growth may be due to malnutrition or
another health issue
* Cognitive, social, and motor development assessed through
reaching milestones

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10
Q

What are the methods to measure growth of infants?

A

Lengths
Weight
Head circumference

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11
Q

Explain the WHO Growth Charts

A
  • WHO Growth Charts provide an international standard to represent physiological growth of children from birth to 5 years
  • 8500 children, 6 countries (Brazil, Ghana, India, Norway, Oman, United States)
  • Infants (singletons) born at term to non-smoking mothers, good SES, mothers intending to breastfeed
  • Key indicators: weight for age, length for age, weight for length, head circumference
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12
Q

Healthy Growth Patterns of infants

A

Between 3rd and 85th percentiles - WHO Growth Charts
* Note: A single measurement cannot be used as a diagnostic criteria – it provides insight into potential risk and signals need for additional assessment and monitoring
Similar percentiles for weight & length
”Tracking” with consistent percentiles over time.. but crossing can occur in the first 2-3 years
Growth pattern OVER TIME is more important than one single measurement

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13
Q

Growth for perterm infants (<37 weeks)

A

Growth catchup does not occur immediately
Recommended to use corrected postnatal age until 24 or 36
months
Corrected age:
* Postnatal age in weeks – [40 weeks – gestational age in weeks])
* For example, at 12 weeks postnatal age, an infant born at 30
weeks gestational age would be:
12 – [40-30] or 2 weeks corrected postnatal age
- 10 wks early

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14
Q

With respect to assessing growth, which of the following is/are
TRUE?
A. A normal growth pattern tends to follow the same
percentile growth curve over time
B. A measurement at a higher percentile is better (e.g., a
weight-for-length measurement at the 75th percentile is
better than a weight-for-length measurement at the 20th
percentile)
C. Measurements at the 50th percentile should be the goal
for each child’s growth
D. All of the above are true
E. A and B are true

A

A. A normal growth pattern tends to follow the same
percentile growth curve over time

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15
Q

What else would you want to know make a through assessment of growth pattern?

A

Head circumference
Length
Feeding frequency
Diaper - wet + solid
Sleeping
Alertness

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16
Q

Gastrointestinal function: Mouth

A

Lingual lipase hydrolyzes MCT

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17
Q

Gastrointestinal function: Stomach

A
  • pH decreases from 6.0 (birth) to 2.0 (2 months)
  • Low pepsin activity in early infancy
  • Weak gastric sphincter – prone to vomiting and reflux
  • Stomach capacity increases from ~10 ml (shortly after birth)
    to 200-300 ml (1 year)
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18
Q

Gastrointestinal function: Small intestine & pancreativ function and Large intestine

A

Small intestine & pancreatic enzymes
Protein: digestion well developed

Fat: low levels of lipase and bile salts
* 85-90% of human milk fat is absorbed (vs 70% in cow’s milk) vs >95% in adults

Carbohydrates: Low pancreatic amylase; starch poorly digested
- not much starch in human milk

Large intestine: development of gut microbiotia
- HMO

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19
Q

What is the main source of carbohydrate in breastmilk?
A. Starch
B. Sucrose
C. Lactase
D. Lactose
E. Glucose

A

D. Lactose

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20
Q

List two key adaptations to the fat content of human milk that improve fat absorption

A

Medium fatty acids
Palmitate at sn:2

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21
Q

What are the components of cognitive development & nutrition?

A

Nutrients for growth and brain development
Environmental stimulation
Optimal Cognitve development

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22
Q

What key nutrients are important for brain growth and
development? [Select all that apply]
A. Iron
B. Omega-3 fatty acids
C. Sodium
D. Potassium
E. Calcium

A

A. Iron
B. Omega-3 fatty acids

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23
Q

What are the reflexes?

A

**1. Rooting **
- Touching of the cheek or side of the mouth
- Baby turns to the source and opens month. Is able to seek the breast or bottle
- ~4 months
**2. Sucking/swallowing **
- Touching of the mouth
- Baby sucks (finger, nipple, or heat); coordinated with swallowig enabling the infant to feed safetly in a very reclined position
- ~4 months
3. Extrusion (tongue thrust)
- Touching of the lips
- Tongue moves forward out of the mouth. Assists with feeding from breast or bottle but not solid foods. Protests against choking
~6 months
4. Gag
- Placing an object towards back of the mouth
- expelled from back of mouth by the tongue. protests against choking

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24
Q

Based on when oral reflexes disappear, when would you
introduce solid foods?
A. At 2 months
B. At 4 months
C. At 6 months
D. At 12 months

A

C. At 6 months

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25
What are the neuromuscular developmental milestones?
* 4-6 months: biting and chewing added to sucking; sits erect * 6-9 months: grasps and finger feeds; sits without support * 9-12 months: tongue lateralization, rotary motion of jaw, finger-thumb motions * >1 year: ‘proficient’ self-feeding
26
What are the dietary references intakes of infants?
Dietary References Intakes - Adequate Intakes (AI) 0-6 months 7-12 months - RDA proteins, iron, zinc Based on: - Breast milk intake & composition (and after 6 months intake from complementary foods) - Direct data from infants - Extrapolations from adults
27
The majority of energy expenditure for newborns (age 0-3 months) is needed for: A. Basal metabolic rate B. Physical activity C. Energy deposited in new tissues
A. Basal metabolix rate
28
What are the energy expenditure for infants?
Basal metabolic rate: activities of brain, liver, heart and kidneys Cost of tissue accretion: - Higher kcal/day but decreases fast to 3-6 months Physical activity: not accounted for in EER equations EER = total energy expenditiure (basal metabolism) + energy deposition
29
The AI for fat is based on intake from human milk. If the average intake from 0-6 months is 780 ml/d and the average fat content of milk is 4.0 g/100 mL, what would the AI for fat be?
780 mL x (4.0g/100mL) = 31 g/d
30
DRI for infants: Fats
* Up to 55% of energy! * Concentrated energy needed for growth AI for fat * 0-6 months: Based on human milk content * 7-12 months: 30 g/d Based on human milk + complementary foods
31
DRI for infants: Essential Fatty acids
* AI for omega-3 and omega-6 * Human milk (and formulas) provide >5% of energy as omega-6 and ~1% omega 3 * Deficiency may develop if <1% of energy is supplied by linoleic acid
32
DRI for infants: Protein
0-6 months * AI based on protein and non-protein N content of human milk * AI: 1.5 g/kg/d 7-12 months * EAR established using the **factorial method **based on needs for maintenance and growth * EAR: 1.0 g/kg/d * RDA: 1.2 g/kg/d Factorial method: adding up all losses (urine + feces) + growth Highest needs during 0-6 months compared to adults
33
Is there an AMDR for infants 0 – 12 months of age? A. Yes B. No
B. No
34
How much water should infants drink in the first 6 months of life? A. Enough to satisfy their thirst after breast feeding or consuming formula B. Approximately 8 small cups per day to start good habits to last into adulthood C. Young infants should not normally consume water
C. Young infants should not normally consume water
35
DRI for infants: Calcium
AI based on calcium intake * 0-6 months: 200 mg (breast milk) * 6-12 months: 260 mg (breast milk plus food) Proportionately more calcium added to bone in first year than at any other time of life Infant absorbs 55–60% of calcium in breastmilk * Calcium content is lower but bioavailability is higher from breast milk than formula
36
DRI for infants: Vitmain K
nfants are born with low levels of vitamin K because: - Low transfer in pregnancy - Low amounts in breastmilk - Immature gut microbiome Low vitamin K can lead to **vitamin K deficiency bleeding** - Blood cannot clot - Internal bleeds may not be apparent and can be fatal Recommend routine intramuscular administration of a single dose of vitamin K at 1.0 mg to all newborns
37
DRI for infants: Vitmain D
* Limited sun exposure + low amounts in breast milk = potentially low vitamin D in infants * Risk of rickets in breast-fed infants who do not receive supplement Supplemental vitamin D is recommended for breastfed infants
38
If infants are both breastfeeding and getting some formula, should they be given a vitamin D supplement? A. Yes B. No C. It depends how much breastmilk they’re consuming
A. Yes
39
DRI for infants: Iron
Breast milk contains very little iron, but it is absorbed well Infants have adequate iron for first ~6 months * AI 0–6 months: 0.27 mg Will need additional sources of dietary iron thereafter * RDA 7–12 months: 11 mg Iron deficiency anemia most common at ~9 months of age * May lead to lasting impaired cognitive development
40
Iron and Fetal Hemoglobin in infants
At birth, fetal hemoglobin replaced with adult hemoglobin Recycling of hemoglobin + iron stores + iron in breastmilk provide adequate iron for first 6 months of life No need for iron supplements for breastfeed infant
41
Bilirubin role in infancy
* Bilirubin = byproduct of hemoglobin breakdown * Immature newborn liver has limited ability to metabolize and excrete bilirubin * Newborn is predisposed to hyperbilirubinemia which causes **neonatal jaundice**
42
What is neonatal jaundice?
* Build up of bilirubin * Presents as yellow coloring of skin * Elevated bilirubin can cause permanent neurological damage if not resolved Most frequent cause for hospital readmission for newborns during the first 2 weeks of life
43
Treament for Neonatal Jaundice
Physiological jaundice: Frequent breastfeeding to aid in excretion of bilirubin Pathological jaundice: Phototherapy - lethargy; weight loss >10% body weight
44
Which of the following would increase the risk for pathological jaundice? A. Early formula feeding B. Post-dates delivery C. Caesarean delivery D. Blood type incompatibility
D. Blood type incompatibility
45
What are the nutrient needs after 0-6 months?
Child * Breast/bottle feeding only * Strong reflexive component * Child is in control of when and how much to eat Caregiver Roles * Cue recognition/responsive, trusting relationship * Physical support/positioning * Supporting milk production (maternal nutrition) or preparation of infant formula
46
What are the nutrition recommendations from birth to 6 months?
Breastfeeding is the normal and unequalled method of feeding infants. * Recommend exclusive breastfeeding for the first six months. Breastfeeding initiation and duration rates increase with active protection, support, and promotion. Supplemental vitamin D is recommended for breastfed infants. First complementary foods should be iron-rich. Routine growth monitoring is important to assess infant health and nutrition. Feeding changes are unnecessary for most common health conditions in infancy. Breastfeeding is rarely contraindicated. Recommendations on the use of breastmilk substitutes * Individually counsel those families who have made a fully informed choice not to breastfeed on the use of breastmilk substitutes
47
What are the benefots of breastfeeding?
Human milk provides: * Sufficient energy and nutrients for babies for the first six months of life * Nutrients in the correct quantity and quality to promote absorption * Bioactive factors that offer protection against gastroenteritis, diarrhea, respiratory infection, and allergy in early life
48
What are alternatives to breastfeeding?
1. Expressed mother’s own milk (MOM) 2. Donor milk - pasteurization destroys potential pathogens but decreases some immune factors and vitamins in milk - healthy and non-smoking mothers 3. Human milk substitutes (infant formula)
49
Wha is informal milk sharing?
Growing demand has led to informal ”milk sharing”, which carries risk of * Infection with hepatitis B and C, HIV... * Transfer of drugs, tobacco or alcohol in milk Unpasteurized milk sharing is not endorsed by the CPS
50
What is infant formula?
Substitute for human milk in those that: – Should not receive human milk or – For whom human milk is not available Based on animal milks (e.g. cow’s) or plant sources (e.g. soy) and designed to mimic human milk as best as possible Regulated by Health Canada 3 Kinds of Formula: Powder, Ready to feed, Liquid concentrate
51
What are the types of infant formula?
Cow’s milk based - Recommended for most formula-fed infants Soy milk based * Lactose free & vegan - Recommended for babies who can't have animal products + those who can't have lactose - Not recommended for allergies Therapeutic formulas: – Hydrolyzed or semi-elemental - Proteins broken down – Elemental (amino-acid) – Preterm : Higher calories, protein
52
How is cow's milk altered to make infant formla?
Dec. carbs - adding lactose or corn-syrup (glucose) Dec. Pro - Inc Whey/Casein ratio Additon Iron Chane fats composition - Inc. PUFA, DHA Dec. Solutes load (electrolytes)
53
How much milk/formula?
Feeding should be on demand Following baby cues > precise amounts In general, ~150 mL/kg for first three months
54
Standard infant formula is cow’s milk-based, so why can’t regular whole cow’s milk be used instead of formula? [Select all that apply] A. It doesn’t provide adequate micronutrients for infant growth and development B. The concentration of protein and some minerals is much higher than human milk C. Cow’s milk provides too much iron D. The fatty acid composition of human milk differs from cow’s milk E. Carbohydrates in cow’s milk are not the right type
A. It doesn’t provide adequate micronutrients for infant growth and development B. The concentration of protein and some minerals is much higher than human milk D. The fatty acid composition of human milk differs from cow’s milk
55
How should infant feeding development 6-12 months?
**Physical:** * 4-6 months: biting added to sucking, better head and neck control. * 6-9 months: better dexterity, sits without support; seal lips around eating utensils and cups. * 9-12 months: tongue lateralization, rotary motion of jaw, finger-thumb motions * Maturing GI and kidney functions to support solid eating. * >1 year: ‘proficient’ self-feeding **Autonomy:** Improving communication, control **Exploration:** new tastes, textures
56
What are complementary foods?
Complementary foods provide additional energy and nutrients needed for the growing infant Transition from "feeding" to independent eating Allowing infant to explore new textures and flavors
57
Which nutrient would you be most concerned about in an infant who was solely breastfed at one year of age? A. Protein B. Water C. Calcium D. Vitamin D E. Iron
E. Iron
58
What are caregivers roles beyond 6-12 months?
Spearation/individualization phase - Provide appropriate foods for childs developmental age - Provide boundaries bt setting meal structure - Allow for safe exploration - Balance autonomy/dependency Feeding is at its best when using a competence-based approach and not a deficit-based approach
59
When to introduce complementary foods?
Developmental Readiness for Solids * Sits by self with good head control * Can track spoon/food and open mouth * Can close lips over a spoon * Can indicate they don’t want something, i.e. turning head away * Interested in food, i.e. leaning forward when food is offered
60
What complementary foods should be introduced first? A. Iron-fortified baby cereal B. Pureed meat or meat alternatives C. Mashed banana D. Yogurt E. Mashed avocados
A. Iron-fortified baby cereal
61
After introduction of complementary foods, What/Meal structure
Age 6-8 months: 2-3 meals and 1-2 snacks each day Age 9-11 months: 3 meals and 1-2 snacks Age 12 months and beyond: 3 meals and 2-3 snacks * When baby starts to show signs of disinterest or tired, it is time to finish the meal regardless how much food baby has eaten. * Offer solid meals when baby is somewhat hungry, but not too hungry.
62
How does food textures in complementary foods contribute?
Offer a variety of textures and finger foods following infant’s readiness: *Prioritize iron-rich food, *Progress and advance beyond pureed and minced textures to lumpy, soft- cooked textures no later than 9-12 months Pureed, lumpy, mashed, ground, soft-cooked, minced
63
How to introduce complementary foods?
Infant should be in control: must be allowed to eat when they are hungry and stop when they are full Food should be offered in a pleasant environment with positive adult attention; dont' over stimulate or using tactics like coercion or persuasion - Food should not be used as a reward, punishment, or pacificer
64
What is the Satter Division of responsibility in Feeding (sDoR)
Responsive feeding is based on this theoretrical framework - Healthy term infants possess the ability and capacity to **FOOD REGULATE** defined as knowing how much to eat to manage hunger and satiety, and to **FOOD ACCEPT** defined as with enough exposures (up to 20 times, to "come around", and accept new food on their owing timing Based on a **competence stance**, recommend to follow the **trust model** in feeding
65
What is the Division of Responsibility for the First six months?
Parent's Reponsibility - What is offered - Breastmilk/substitutes - Providing positive and supportive environment Infant's Responsibility - When to eat - How much
66
What is the Division of Responsibility for the Second six months?
Parent's Responsibility - What is offered - When - Where Infant's Responsibility - What is eaten of the foods provided (or if food is eaten) - How much
67
What is baby-led weaning?
baby-led weaning believes babies would nautrally learn how to eat at their own pace - not minced or pureed, but simply softly cooked and cut-up to size, food from family foods - without the use of utensils Better health with least amount of interference from parents or caregivers
68
# What What to not serve to prevent choking concerns for infants?
Prevention of choking hazards needs to continue until baby turns 4 years of age Should not be served to infants and young childern: - Nuts, poocorn, small candies - raw fruite or veges cooked unless very soft - hot dogs or ther foods cut in 'rounds' - whole grapes (suggest cut in half or quarters) - thick peanut butter (suggest spread it thinly on cracker or toast)
69
What are pediatric nutrition guidelines?
9-12 months Guideline: * When a toddler is eating a variety of iron-rich foods, advise that pasteurized whole (3.25% M.F.) cow milk can be introduced in an open cup. Pasteurized, full-fat goat milk, with added folic acid and vitamin D, may be given as an alternative to cow milk. The following may indicate baby is at increased risk: * Consumes skim, 1% or 2% cow milk or goat milk as main milk source. * Consumes plant-based milk alternatives (e.g. soy, rice, almond beverage), goat milk not fortified with vitamin D or homemade infant formula as a milk source. 12-24 months Guideline: * If not breastfed, advise to offer 500 mL (2 cups) pasteurized whole (3.25% M.F.) cow milk (vitamin D fortified goat milk) each day. The following may indicate baby is at increased risk: * Consumes skim, 1% or 2% cow milk or goat milk as main milk source. * Consumes plant-based milk alternatives (e.g. soy, rice, almond beverage), goat milk not fortified with vitamin D or homemade formula as milk source. Until baby is consistently having 2 servings of dairy products and eating a wide variety of vitamin D rich foods, continue with vitamin D drop