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PPN 301 Exam Review Questions and Answers
100% Solved
physiological adaptations of Newborn - ✔✔- Establishing & maintaining
respirations
- Adjusting to circulatory changes
- Regulating temperature
Est. & Maintain Respirations - ✔✔- ↓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 - ✔✔1. loss of umbilical arteries, veins, & ductus
venosus
2. ductus arteriosus closes (isolates pulm./syst. circuits)
3. neonate inhales/expands lungs, pulmonary circuit starts
, ©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
4. blood flows into left atrium = foramen ovale closes
Thermoregulation of newborn - ✔✔- 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 - ✔✔30 min after birth, HR may be 160-180, R: 60-80
irregular, ↓ motor, strong suck, skin to skin
Period of decreased responsiveness - ✔✔Lasts from 60 to 100 minutes, deep
sleep, hr: 100-140, r: 40-60
Second period of reactivity - ✔✔2-8 hours after birth. Often gags or chokes on
mucus that has accumulated in his mouth, Meconium, skin colour change
appearance (APGAR) - ✔✔0- Blue
1- Acrocyanosis (EXTREMITIES BLUE)
2- Pink
Pulse (APGAR) - ✔✔0 - Absent
PPN 301 Exam Review Questions and Answers
100% Solved
physiological adaptations of Newborn - ✔✔- Establishing & maintaining
respirations
- Adjusting to circulatory changes
- Regulating temperature
Est. & Maintain Respirations - ✔✔- ↓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 - ✔✔1. loss of umbilical arteries, veins, & ductus
venosus
2. ductus arteriosus closes (isolates pulm./syst. circuits)
3. neonate inhales/expands lungs, pulmonary circuit starts
, ©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.
4. blood flows into left atrium = foramen ovale closes
Thermoregulation of newborn - ✔✔- 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 - ✔✔30 min after birth, HR may be 160-180, R: 60-80
irregular, ↓ motor, strong suck, skin to skin
Period of decreased responsiveness - ✔✔Lasts from 60 to 100 minutes, deep
sleep, hr: 100-140, r: 40-60
Second period of reactivity - ✔✔2-8 hours after birth. Often gags or chokes on
mucus that has accumulated in his mouth, Meconium, skin colour change
appearance (APGAR) - ✔✔0- Blue
1- Acrocyanosis (EXTREMITIES BLUE)
2- Pink
Pulse (APGAR) - ✔✔0 - Absent
