Lecture 02 Neonatal Care Flashcards
Where is Wharton’s Jelly and what does it do?
It is gelatinous substance within the umbilical cord.
It protects and insulates the two arteries in umbilical cord.
What process beings in utero to prepare the baby to transition to extrauterine independence? (3)
In utero
- Fetal breathing
- Production of surfactant after 34 weeks
- Deposit of brown fat to help thermoregulate
What does the umblical cord consist of? What are the func of each vessel?
AVA. Two arteries that removes waste from the baby
One Vein that delivers oxygen and nutrients to the baby.
What are the chemical stimuli to intiate respiration? (3)
- Decrease pH
- Decrease PaO2
- Increase PaCO2
What are the sensory stimuli to intiate respiration? (5)
- Cold
- Gravity
- Pain
- Light
- Noise
What are the mechanical stimuli to intiate respiration? (1)
- Thoracic squeeze with vaginal delivery, helps squeeze out amniotic fluid.
In C Section they dont’ get this and will need suctioning.
Note that there’s dif adaptations done by the baby depending on what delivery method was used.
What is the First Period of Reactivity?
How long does it last for?
What is occuring at this time?
What helps baby to organize HR and RR?
What vital signs are elevated?
What are the normal vital signs and what are the new figures after Period of Reactivity?
First Period of Reactivity lasts 60 ~90 min
The newborn is awake, active, appears hungry and has strong suck. The motehr should attempt to intiate breastfeeding.
Skin to skin contact is important as it helps baby organize HR and RR
Normal Signs: HR 100~160 mmHg, RR 30~60 breathes/min
HR increases to 160 ~180 bpm
RR is irregular 60~80 breathes/min, may hear crackles
onset of bowel sounds
When does Period of Inactivity occur?
What happens during this time?
It occurs 3~4 hours after birth.
The newborn is difficult to awaken, and may last few min to several hours.
Vital signs return to normal and can do assessment now.
When does Second Period of Reactivity occur?
How long does it last?
What occurs during this time?
What should you observe for?
It occurs 4~8 hours after birth.
Lasts 4~6 hours after period of inactivity
The vital signs are variable, so observe newborn closely for apnea, gagging and regugitation
Tachycardia and tachypnea may occur.
Increased muscle tone, skin color changes, meconium may be passed.
What is the mnemonic for APGAR?
A: Appearance (color)
P: Pulse (Heart rate)
G: Grimace (response to stimulation)
A: Activity (muscle tone)
R: Respiration
How does the APGAR score work?
Each category has 2 points possible.
They total up to ten.
7~10: good, continue to asess for changes
4~6 fair, needs air passages cleared, oxygen
0~3 poor, needs resucitation
What kind of assessment is the APGAR scale?
It’s a transitional assessment
What are 4 problems that may occur during transition?
- Respiratory
- Circulatory
- Thermoregulation
- Neurologic
What is the normal newborn respiratory rate?
What do you expect when you auscultate RR for one full min?
Normal rate is 30~60 breathes/min
Auscultation: normally shallow and irregular
Common Newborn Problems: Hyperbilirubemia
How often does Physiologic Jaundice occur in term newborns?
What’s the increase in uncongulated bilirubin?
The peak may be higher in breast fed infants, what’s the level?
- Occurs in 50% of all newborns, arises >24 hours after birth
- Increase in unconjugated bilirubin is no more than 12 mg/dl by 3 days of age
- Peak may be higher in breast fed infants at range of 15~17 mg/dl
Describe the following respiratory problem: Tachypnea
RR >60 breathes/minute
Describe the following respiratory problem: Grunting
Infant closes glottis during expiration, in an attempt to increase intra thracic pressure
Describe the following respiratory problem: Retractions
Accessory muscles used to breath, noted by observing the chest
Describe the following respiratory problem: Nasal flaring
Nares expand to allow fuller inspiration
Describe the following respiratory problem: Unequal Breath Sounds
Air entry not equal bilaterally
Describe the following respiratory problem: Apnea
Absence of breathing >15 seconds
Describe the following respiratory problem: Oxygen Requirements
Signs that supplementary O 2 needed to maintain central pink color
What is the normal newborn heart rate?
120-160 bpm for NCLEX
Where could you palpate HR of infant?
After birth, can do it at the base of umblical cord
PMI in newborn: 4th intercostal space to the left of the midcalvicular line
Sometimes eprson taking bpm can count with their finger