PPN 301 EXAM REVIEW LATEST
UPDATED
physiological adaptations of Newborn - ANSWER - Establishing &
maintaining respirations
- Adjusting to circulatory changes
- Regulating temperature
Est. & Maintain Respirations - ANSWER - ↓Po2 and ↑Pco2, ↓blood pH
- stimulation of respiratory centre (Medulla)
- Crying = distribution of air in lungs
- Skin to skin & sensory to environment
Circulatory changes at birth - ANSWER 1. loss of umbilical arteries,
veins, & ductus venosus
2. ductus arteriosus closes (isolates pulm./syst. circuits)
3. neonate inhales/expands lungs, pulmonary circuit starts
4. blood flows into left atrium = foramen ovale closes
Thermoregulation of newborn - ANSWER - Conduction: blanket under to
reduce heat loss
- Convection: clothes to keep heat
- Evaporation: evaporated water loses heat
- Radiation: Heat lost to colder items/ keep surroundings warm
First period of reactivity - ANSWER 30 min after birth, HR may be 160-
180, R: 60-80 irregular, ↓ motor, strong suck, skin to skin
Period of decreased responsiveness - ANSWER Lasts from 60 to 100
minutes, deep sleep, hr: 100-140, r: 40-60
Second period of reactivity - ANSWER 2-8 hours after birth. Often gags
or chokes on mucus that has accumulated in his mouth, Meconium, skin
colour change
appearance (APGAR) - ANSWER 0- Blue
UPDATED
physiological adaptations of Newborn - ANSWER - Establishing &
maintaining respirations
- Adjusting to circulatory changes
- Regulating temperature
Est. & Maintain Respirations - ANSWER - ↓Po2 and ↑Pco2, ↓blood pH
- stimulation of respiratory centre (Medulla)
- Crying = distribution of air in lungs
- Skin to skin & sensory to environment
Circulatory changes at birth - ANSWER 1. loss of umbilical arteries,
veins, & ductus venosus
2. ductus arteriosus closes (isolates pulm./syst. circuits)
3. neonate inhales/expands lungs, pulmonary circuit starts
4. blood flows into left atrium = foramen ovale closes
Thermoregulation of newborn - ANSWER - Conduction: blanket under to
reduce heat loss
- Convection: clothes to keep heat
- Evaporation: evaporated water loses heat
- Radiation: Heat lost to colder items/ keep surroundings warm
First period of reactivity - ANSWER 30 min after birth, HR may be 160-
180, R: 60-80 irregular, ↓ motor, strong suck, skin to skin
Period of decreased responsiveness - ANSWER Lasts from 60 to 100
minutes, deep sleep, hr: 100-140, r: 40-60
Second period of reactivity - ANSWER 2-8 hours after birth. Often gags
or chokes on mucus that has accumulated in his mouth, Meconium, skin
colour change
appearance (APGAR) - ANSWER 0- Blue
