Explain new born care
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newborn neonatal care essentials 2024
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Explain the new born care
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Newborn (Neonatal) Care
Sources: The Harriet Lane Handbook (23rd ed.), Textbook of Family Medicine (9th ed.), Tintinalli's Emergency Medicine
1. Physiologic Transition at Birth
At birth, the newborn undergoes a rapid shift from intrauterine to extrauterine life. Key changes include:
- Circulation: The three fetal shunts (ductus venosus, ductus arteriosus, foramen ovale) functionally close. Pulmonary vascular resistance drops as the lungs inflate, redirecting blood through the lungs for oxygenation.
- Respiration: The first breath is triggered by cold, tactile stimulation, and rising CO₂. Lung fluid is rapidly reabsorbed.
- Thermoregulation: Newborns lose heat rapidly — wet skin evaporates heat quickly. They rely on brown fat (non-shivering thermogenesis) rather than shivering.
A vigorous term infant is defined as:
- Breathing and crying at birth with strong respiratory effort
- Heart rate >100 beats/min
- Good muscle tone
2. Immediate Care at Delivery (First 30 Seconds)
| Step | Action |
|---|---|
| Warmth | Dry with warm towel; skin-to-skin with mother preferred, or place under radiant warmer |
| Stimulation | Rub the back 2–3 times to stimulate breathing |
| Airway | Routine suctioning is NOT recommended unless airway obstruction is evident; use bulb or 8F catheter only if needed |
| Assessment | Evaluate respiratory effort, heart rate, and tone |
Very preterm infants (<29 weeks) and very low birth weight (<1500 g) should be placed in a polyethylene bag to prevent hypothermia. Avoid hyperthermia — it worsens hypoxic-ischemic injury.
Target Preductal O₂ Saturations During Resuscitation
| Time After Birth | Target SpO₂ |
|---|---|
| 1 min | 60–65% |
| 2 min | 65–70% |
| 3 min | 70–75% |
| 4 min | 75–80% |
| 5 min | 80–85% |
| 10 min | 85–90% |
3. Routine Newborn Care (Nursery)
Feeding
- Breastfeeding should begin soon after birth and on demand; 8–12 feeds/day
- Formula-fed newborns should be offered a bottle soon after birth
- Monitor for excessive weight loss (>10% of birth weight is abnormal)
Prophylactic Medications
| Medication | Purpose |
|---|---|
| Vitamin K (IM) | Prevents hemorrhagic disease of the newborn (Vitamin K deficiency bleeding) |
| Erythromycin 0.5% ophthalmic ointment | Prophylaxis against gonococcal ophthalmia neonatorum |
Monitoring
- Jaundice: Monitor clinically for hyperbilirubinemia; transcutaneous bilirubin can screen but does not replace plasma bilirubin if clinically warranted
- Blood glucose: Monitor if at increased risk (infant of diabetic mother, LGA, SGA) or symptomatic
- Stool/Urine output: Most infants should pass 1 void and 1 meconium stool within the first 24 hours
- Temperature: Maintain neutral thermal environment
4. Newborn Assessment
Birth Weight Classifications
| Category | Weight |
|---|---|
| Extremely low birth weight (ELBW) | <1000 g |
| Very low birth weight (VLBW) | <1500 g |
| Low birth weight (LBW) | <2500 g |
| Small for gestational age (SGA) | <10th percentile for gestational age |
| Large for gestational age (LGA) | >90th percentile for gestational age |
APGAR Score
Assessed at 1 and 5 minutes after birth:
| Sign | 0 | 1 | 2 |
|---|---|---|---|
| Appearance (color) | Blue/pale all over | Blue extremities, pink body | Pink all over |
| Pulse (heart rate) | Absent | <100 bpm | ≥100 bpm |
| Grimace (reflex) | No response | Grimace | Cry/cough/sneeze |
| Activity (muscle tone) | Limp | Some flexion | Active motion |
| Respiration | Absent | Weak/irregular | Strong cry |
- Score 7–10: Normal
- Score 4–6: Moderate depression; may need stimulation/O₂
- Score 0–3: Severe depression; resuscitation needed
5. Screening Before Discharge
| Screening | Detail |
|---|---|
| Newborn metabolic screen | Performed within first 72 hours, at least 24 hours after feeding (screens for PKU, hypothyroidism, galactosemia, and many others) |
| Hepatitis B vaccine | First dose before discharge |
| Critical congenital heart disease (CCHD) | Pre- and post-ductal pulse oximetry |
| Hearing screening | Otoacoustic emissions or auditory brainstem response |
| Ophthalmic red reflex | Bilateral; absence may suggest cataracts or retinoblastoma |
| Hyperbilirubinemia risk | Transcutaneous or serum bilirubin before discharge |
6. Umbilical Cord Care
- The cord stump should be kept clean and dry
- Falls off in 1–3 weeks
- A two-vessel cord (single umbilical artery) warrants evaluation for renal anomalies and other congenital defects
7. Hypoglycemia Management
At-risk groups: infants of diabetic mothers, LGA, SGA, preterm infants
- Symptomatic hypoglycemia: IV dextrose (D10W)
- Asymptomatic with low glucose: Early feeding; recheck within 30 minutes
- Threshold varies by age and clinical context (typically <45–50 mg/dL in the first hours warrants intervention)
8. Jaundice (Neonatal Hyperbilirubinemia)
- Physiologic jaundice: Appears after 24 hours, peaks day 3–5, resolves by day 2 weeks
- Pathologic jaundice: Appears within 24 hours — requires urgent workup (hemolytic disease, ABO/Rh incompatibility, infection)
- Treatment: Phototherapy for elevated levels; exchange transfusion for severe cases
9. Parental Education & Anticipatory Guidance
- Safe sleep: Back to sleep, firm flat surface, no co-sleeping
- Feeding cues: Rooting, sucking movements, hand-to-mouth activity
- Diaper output: By day 4–5, expect 6+ wet diapers/day and regular stools
- Cord/circumcision care
- Signs to seek immediate care: Poor feeding, high fever (>38°C/100.4°F rectal), difficulty breathing, persistent jaundice, unusual cry
10. Primary Care Follow-Up
- Newborns should be seen at 2–5 days of life (especially if discharged early) to assess weight, jaundice, and feeding
- Well-child visits continue at 1 month, 2 months, etc., per vaccination schedule
— The Harriet Lane Handbook, 23rd ed. | Textbook of Family Medicine, 9th ed. | Tintinalli's Emergency Medicine
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