Normal Term + Pre-Term Infant Flashcards

1
Q

Definition of extremely preterm

A

23-27 weeks

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2
Q

Definition of very preterm

A

28-31 weeks

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3
Q

Definition of preterm

A

32-36 weeks

ie. anything before 37 weeks gestation

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4
Q

Definition of term

A

37-42 weeks

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5
Q

Definition of post-term

A

anything after 42 weeks

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6
Q

Why is the 3rd trimester important

A

Daily weight gain of 7g fat

3.5% fat at 28 weeks, 15% fat at term

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7
Q

what is transferred via the placenta in the 3rd trimester

A

iron, vitamins, calcium, phosphate, antibodies

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8
Q

normal weight of term baby

A

2.5kg-4.0kg
>4kg = large for gestational age
<2.5kg = small for gestational age

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9
Q

what type of environment occurs during labour? How does baby cope with this?

A

Hypoxic environment

Foetal Hb helps release oxygen

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10
Q

what is perinatal adaptation

A

the response of the baby to the post partum environment

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11
Q

what happens has part of perinatal adaptation

A
First breath/cry
Alveolar expansion 
Change from foetal to newborn circulation
Decreased pulmonary arterial pressure
Increased PaO2
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12
Q

What are the 5 categories of an APGAR score

A
HR
RR
Responsiveness
Tone 
Colour
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13
Q

Normal APGAR score

A

8 or more out of 10

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14
Q

what is haemorrhagic disease of the newborn

A

Autoimmune condition
The IgG antibodies passed from mother to foetus attack the red blood cells causing haemolytic
Can cause anaemia + reticulocytosis (increase in immature RBC’s)

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15
Q

what is given to prevent haemorrhagic disease of the newborn

A

IM vitamin K

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16
Q

what is moulding

A

the shape of the infants head changes to fit the shape of the mothers birth canal

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17
Q

what is caput succedaneum

A

Oedema of the newborns scalp soon after delivery

Appears as a lump- should disappear after a few days

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18
Q

characteristics of fetal alcohol syndrome

A
Epicanthal folds (skin of upper eye lid covers inner eye)
Small eye openings
Upturned nose
Smooth philtrum
Thin upper lip
19
Q

hip examinations performed on a new baby

A

barlow- tries to dislocate the hip

Ortolani- tries to relocate the hip

20
Q

causes of pre-term birth

A
spontaneous
multiple pregnancy
Rupture of membranes
IUGR
Antepartum haemorrhage
Cervical incompetence 
IVF
21
Q

Differences between term + preterm infant

A

Get cold faster
More fragile lungs
Don’t breathe as effectively

22
Q

Examples of conditions caused by system immaturity in pre-term infants

A

Respiratory distress syndrome
Patent ductus arteriosus
Intraventricular haemorrhage
Nectrotising enterocolitis

23
Q

why do preterm infants have trouble keeping warm

A

low BMR
Minimal muscular activity
Low levels of fat
High ratio of surface area to body mass

24
Q

two types of neonatal sepsis

A

Early onset- due to bacteria acquired before + during delivery
Late onset- acquired after delivery

25
Q

Organisms that cause early onset neonatal sepsis

A

Group B strep

Gram -ve: klebsiella, E.Coli, Pseudomonas, Salmonella

26
Q

Organisms that cause late onset neonatal sepsis

A

Gram +ve: Staph.Aureus, Strep Pneumoniae, Strep. Pyogenes

27
Q

what is important to remember about the use of incubators

A

they increase infection

28
Q

Respiratory complications of preterm

A

RDS
apnoea of prematurity
Bronchopulmonary dysplasia

29
Q

pathology behind RDS

A

Surfactant deficiency + structural immaturity

Leads to alveolar damage, inflammation + exudate formation from leaky capillaries

30
Q

Features of RDS

A
Tachypnoea
Grunting
Nasal flaring 
Intercostal recessions
Cyanosis
31
Q

Management of RDS

A

Maternal steroid

Ventilation

32
Q

Cardiac concerns with preterm delivery

A

Patent ductus arteriosis

Systemic hypotension

33
Q

what type of murmur is heard in PDA

A

machine like murmur

connection between aorta and pulmonary artery remains open

34
Q

what is an intraventricular haemorrhage

A

A form of intracranial haemorrhage that begins with bleeding into germinal matrix

35
Q

How does an intraventricular haemorrhage present

A
within first 72 hours
Diminished/absent moro reflex
Poor muscle tone
sleepiness
lethargy 
apnoea
36
Q

management of intraventricular haemorrhage

A

Preventative measures (antenatal steroids)

37
Q

what is necrotising enterocolitis (NEC)

A

Widespread necrosis in the small and large intestine

38
Q

Symptoms of NEC

A
lethargy
bloody stool 
temperature instability 
apnoea 
bradycardia 
Abdominal distension
39
Q

Long term complication of prematurity

A

cerebral palsy

40
Q

Normal HR for a newborn

A

120-140 BPM

41
Q

Expected RR for a newborn

A

40-60 breaths/min

42
Q

What is transient tachypnoea of the newborn

A

presents as tachypnoea for first few hours of life, lasts up to 1 day and resolved by day 2

43
Q

Most common bacterial cause of septicaemia in neonates

A

Group B strep