Neonatal path. Flashcards
1
Q
def. birth
A
complete expulsion or removal of fetus that at any time did breath or show signs of life
2
Q
def. premature
A
3
Q
def. postmature
A
> 42 weeks GA
4
Q
what is small and large for GA
A
90th
5
Q
def. neonatal period
A
birth to one month
6
Q
how does mortality compare to premature
A
inverse relationship - big jump between 24 and 23 weels
7
Q
2 main causes of neonatal death
A
- premature
2. congential/chromo anomalies
8
Q
5 parts of apgar
A
- heart rarte
- resp. effort
- muscle tone
- response to cath. in nostril
- color
9
Q
how does apgar compare to mortality
A
high score = less death
10
Q
3 fetal circ. bipass systems
A
- ductus venosus - liver
- foramen ovale - lungs
- ductus areteriosus - lungs
11
Q
what happens to circ at birth
A
- pulm art. dilate and reduce pressure
- high LA pressure and low placental flow close foramen ovale
- duct arteriosus and venosus close
12
Q
what happens to lung as age
A
get more alveoli - can survive at 36 weks
13
Q
what happens to lungs at birth
A
- vag pressure squeezes fluids from lungs
- alveoli inflate with first few breaths
- alveoli don’t collapse b/c of surfactant
14
Q
where does sufactant come from
A
type 2 pneumocytes
15
Q
when do we have enough surfactant
A
35 wks
