Neonatal Resuscitation
Paediatrics · Neonatology · lean revision notes
Neonatal Resuscitation
Neonatal resuscitation is the single most time-critical skill in the delivery room. Roughly 10% of newborns need some assistance to begin breathing at birth, about 5% require positive-pressure ventilation (PPV), and fewer than 1% need advanced resuscitation with chest compressions or drugs. NEET PG loves this topic as a 30-second-decision-point vignette, so master the algorithm cold.
High-yield: The single most important and effective step in neonatal resuscitation is establishing effective ventilation (PPV). The vast majority of newborns who fail to breathe have a respiratory problem, not a cardiac one — hence "ventilation first" is the central dogma of NRP.
Anticipation & the Golden Minute
The current framework follows the Neonatal Resuscitation Program (NRP) / AAP–AHA 2020–21 guidelines. Resuscitation hinges on the "Golden Minute" — within the first 60 seconds of life, the baby should have completed the initial steps and, if indicated, have PPV started.
At every delivery, ask the 4 pre-birth (anticipation) questions:
- What is the expected gestational age?
- Is the amniotic fluid clear?
- How many babies are expected?
- Are there additional risk factors?
Rapid initial assessment — the 3 questions at birth
When the baby is born, ask three questions to decide whether the baby stays with the mother or goes to the radiant warmer:
| Question | If YES → | If NO → |
|---|---|---|
| Term gestation? | Routine care | Go to warmer |
| Good tone? | Routine care | Go to warmer |
| Breathing or crying? | Routine care | Go to warmer |
High-yield: If the answer to all three questions is "yes," the baby can stay with the mother for routine care (warmth, drying, clear airway if needed, ongoing observation). If any answer is "no," proceed to the radiant warmer for initial steps.
APGAR Score
The APGAR score (Virginia Apgar, 1953) is assessed at 1 and 5 minutes; if the 5-minute score is <7, repeat every 5 minutes up to 20 minutes.
High-yield: APGAR is used to assess response to resuscitation and prognosis — it is NOT used to decide whether or when to start resuscitation. Resuscitation decisions are based on respirations, heart rate, and tone, which are evident before the 1-minute score.
| Sign | 0 | 1 | 2 |
|---|---|---|---|
| Appearance (colour) | Blue/pale all over | Body pink, extremities blue (acrocyanosis) | Completely pink |
| Pulse (heart rate) | Absent | <100/min | >100/min |
| Grimace (reflex irritability) | No response | Grimace | Cry/cough/sneeze |
| Activity (tone) | Limp | Some flexion | Active motion |
| Respiration | Absent | Slow, irregular, weak cry | Good, strong cry |
Mnemonic for APGAR components: Appearance, Pulse, Grimace, Activity, Respiration.
- 8–10: normal
- 4–7: moderately depressed
- 0–3: severely depressed
High-yield: The last sign to appear (and first to disappear) in a depressed neonate is colour/Appearance — it is the least reliable single sign. Heart rate is the single most important sign guiding resuscitation.
The Resuscitation Algorithm (Flow)
The NRP algorithm runs in blocks of approximately 30 seconds, with reassessment of breathing and heart rate at each decision point.
Initial steps (Warm → Dry → Stimulate → Position airway → Suction if needed) → Apnoea/gasping OR HR <100? → Start PPV → HR still <100? → MR. SOPA corrective steps + ECG monitor → HR <60 despite 30 s effective PPV → Intubate + chest compressions (3:1) + 100% O₂ → HR still <60 → IV adrenaline → consider hypovolaemia/pneumothorax
Step 1 — Initial steps (first 30 seconds)
- Provide warmth under a radiant warmer; for preterm <32 weeks, place in a polyethylene plastic wrap/bag without drying and use a thermal mattress + cap.
- Position the head in a "sniffing" position (slight neck extension) to open the airway.
- Clear secretions only if needed — suction mouth before nose ("M before N"). Avoid deep/vigorous suction (vagal bradycardia).
- Dry and stimulate (rub the back, flick the soles).
High-yield: Maintain normothermia (36.5–37.5 °C axillary). Both hypothermia and hyperthermia worsen outcomes. Delayed cord clamping (≥30–60 s) is recommended for vigorous term and preterm babies not needing resuscitation.
Step 2 — Positive-pressure ventilation (PPV)
Indications to start PPV:
- Apnoea or gasping, OR
- Heart rate <100/min, despite initial steps.
Key parameters:
- Rate: 40–60 breaths/min ("Breathe… two… three…").
- Initial inflation pressure: ~20–25 cm H₂O (PIP); peak up to 30–40 cm H₂O if needed.
- Oxygen concentration:
- Term & late preterm (≥35 weeks): start with 21% (room air).
- Preterm <35 weeks: start with 21–30% O₂, titrate to SpO₂ targets.
High-yield: The most reliable indicator of effective PPV is a prompt rise in heart rate. Chest rise is secondary. Use a pulse oximeter on the right hand/wrist (preductal).
Targeted preductal SpO₂ after birth
| Time after birth | Target preductal SpO₂ |
|---|---|
| 1 min | 60–65% |
| 2 min | 65–70% |
| 3 min | 70–75% |
| 4 min | 75–80% |
| 5 min | 80–85% |
| 10 min | 85–95% |
MR. SOPA — ventilation corrective steps
If the heart rate is not improving and the chest is not moving with PPV, perform the corrective steps in order. Mnemonic: MR. SOPA
- M — Mask adjustment (reapply, ensure good seal)
- R — Reposition the airway (sniffing position)
- S — Suction mouth and nose
- O — Open the mouth
- P — Pressure increase (raise PIP gradually)
- A — Alternative airway (endotracheal tube or laryngeal mask)
High-yield: MRSOPA is the answer when a vignette says "PPV given but heart rate/chest not improving." Always optimise ventilation before escalating to compressions.
Step 3 — Chest compressions
Indication: heart rate remains <60/min despite 30 seconds of effective PPV (ideally after an alternative airway is placed and 100% O₂ is being used).
- Technique of choice: two-thumb encircling-hands technique (superior to two-finger method — better depth, pressure, less fatigue).
- Site: lower third of the sternum.
- Depth: one-third of the anteroposterior diameter of the chest.
- Ratio: 3 compressions : 1 ventilation → 90 compressions + 30 breaths = 120 events/min.
- Cadence: "One-and-two-and-three-and-breathe-and…"
- Increase O₂ to 100% when compressions begin.
- Reassess heart rate after 60 seconds of coordinated compressions + ventilation (use ECG for accuracy).
High-yield: The 3:1 ratio is specific to neonates (because the arrest is usually asphyxial/respiratory). If the arrest is known to be of cardiac origin, a higher ratio (15:2) may be considered — but for the exam, the default newborn ratio is 3:1.
Step 4 — Medications
Adrenaline (epinephrine) is the only drug routinely used in neonatal resuscitation.
Indication: heart rate remains <60/min despite 30 s of effective PPV AND 60 s of coordinated chest compressions with 100% O₂.
| Route | Dose (1:10,000 = 0.1 mg/mL) | Notes |
|---|---|---|
| IV/Umbilical vein (preferred) | 0.01–0.03 mg/kg (0.1–0.3 mL/kg) | Route of choice; fastest, most reliable |
| Endotracheal (while IV access obtained) | 0.05–0.1 mg/kg (0.5–1 mL/kg) | Higher dose; less reliable absorption |
- May repeat every 3–5 minutes.
- Flush with 0.5–1 mL normal saline after IV dose.
Volume expander — for hypovolaemia / suspected blood loss / shock not responding to resuscitation:
- Normal saline (0.9%) or Ringer lactate 10 mL/kg IV over 5–10 min (repeat if needed).
- If acute large blood loss: O-negative packed red cells.
High-yield: Sodium bicarbonate and naloxone are NOT recommended during the acute phase of resuscitation in the delivery room. Naloxone is no longer recommended for the initial resuscitation of newborns with respiratory depression.
Endotracheal Intubation — Indications & Tube Sizes
Indications for intubation in the delivery room:
- Ineffective or prolonged bag-mask PPV / MRSOPA failure
- When chest compressions are required
- Special situations: congenital diaphragmatic hernia (intubate immediately, avoid bag-mask), need for surfactant, suspected upper-airway obstruction
- Extreme prematurity / for surfactant administration
Tube size and depth
| Weight | Gestation | ETT size (ID, mm) | Insertion depth at lip (NTL method) |
|---|---|---|---|
| <1 kg | <28 wk | 2.5 | ~5.5–6.5 cm |
| 1–2 kg | 28–34 wk | 3.0 | ~7 cm |
| 2–3 kg | 34–38 wk | 3.5 | ~8 cm |
| >3 kg | >38 wk | 3.5–4.0 | ~9 cm |
High-yield: Quick depth rule: Insertion depth (cm) = weight (kg) + 6 (the "1-2-3 / 7-8-9 rule"). The newer NTL (nasal-tragus length) + 1 cm method is more accurate. Confirm placement with exhaled CO₂ detector (colorimetric/capnography) — the most reliable confirmation, alongside rising heart rate.
- Laryngoscope blade: straight (Miller) — size 0 for preterm, 1 for term.
- A laryngeal mask airway (LMA) is the recommended alternative if intubation fails and mask ventilation is ineffective (size 1 LMA, usable in babies >2 kg / ≥34 weeks).
Meconium-Stained Amniotic Fluid (MSAF)
A major guideline change (2015 onward) — heavily tested.
High-yield: Routine intrapartum oropharyngeal suctioning and routine endotracheal intubation/suctioning of meconium are NO LONGER recommended, regardless of whether the baby is vigorous or non-vigorous.
Current approach:
- Vigorous baby (good tone, breathing/crying, HR >100): routine care.
- Non-vigorous baby with MSAF: proceed with the standard algorithm — warm, position, clear airway if needed, and start PPV within the first minute. Do not delay PPV for tracheal suctioning. Endotracheal suction is only done if airway obstruction is suspected during PPV.
When to Stop / Withhold Resuscitation
- Discontinuation: Reasonable to consider stopping if the heart rate has been undetectable (Apgar 0) for ≥20 minutes despite all appropriate resuscitative steps — individualise the decision.
- Non-initiation may be appropriate for: confirmed gestation <22 weeks, anencephaly, confirmed trisomy 13 or 18 (lethal), or birth weight where survival is not possible — based on local data and parental counselling.
Complications & Sequelae
- Hypoxic-ischaemic encephalopathy (HIE) — the major neurological consequence of perinatal asphyxia.
- Pneumothorax / air leak — suspect if a baby fails to respond to good PPV (one of the "non-responders").
- Meconium aspiration syndrome (MAS), persistent pulmonary hypertension of the newborn (PPHN).
- Hypothermia, hypoglycaemia, intraventricular haemorrhage (especially preterm).
- Multi-organ injury: acute tubular necrosis, NEC, myocardial dysfunction.
High-yield: For moderate-to-severe HIE in babies ≥36 weeks, start therapeutic hypothermia (cooling to 33.5 °C for 72 hours) within 6 hours of birth — the only proven neuroprotective intervention. It reduces death and major neurodevelopmental disability.
Key Differentials / "Why is the baby not responding?"
When a newborn fails to improve despite seemingly adequate resuscitation, think of these:
- Ineffective ventilation (poor seal, malposition) — commonest; revisit MRSOPA.
- Pneumothorax (sudden deterioration, asymmetric chest, shift).
- Congenital diaphragmatic hernia (scaphoid abdomen, bowel sounds in chest — avoid bag-mask, intubate).
- Choanal atresia / airway obstruction (pink when crying, cyanotic at rest).
- Hypovolaemia / blood loss (pallor, weak pulses, poor response — give volume).
- Congenital heart disease / severe anaemia / hydrops.
- Maternal opioids (respiratory depression — support with PPV, NOT naloxone acutely).
Recently asked / exam angle
- Most effective step in neonatal resuscitation → effective positive-pressure ventilation.
- First step on receiving a non-breathing newborn under the warmer → provide warmth, position, clear airway, dry and stimulate (initial steps), then assess.
- Compression:ventilation ratio in the newborn → 3:1 (90:30 = 120 events/min).
- Heart rate threshold to start chest compressions → <60/min after 30 s of effective PPV.
- Drug of choice and route → adrenaline, IV/umbilical vein, 0.01–0.03 mg/kg (1:10,000).
- Preferred chest-compression technique → two-thumb encircling technique.
- Starting oxygen for a term baby needing PPV → room air (21%).
- Best confirmation of ET tube placement → exhaled CO₂ detector + rising heart rate.
- APGAR purpose → assess response/prognosis, NOT to guide initiation of resuscitation.
- Non-vigorous baby with meconium → start PPV; do NOT routinely intubate for tracheal suction.
- Most important sign monitored during resuscitation → heart rate.
- Preterm <32 weeks thermal care → plastic wrap without drying + cap + thermal mattress.
Rapid revision
- ~10% of newborns need help to breathe; ~5% need PPV; <1% need compressions/drugs.
- The Golden Minute = complete initial steps and start PPV (if needed) within 60 s.
- Three questions at birth: term, good tone, breathing/crying — any "no" → radiant warmer.
- APGAR at 1 and 5 min; <7 → repeat every 5 min up to 20 min; it does NOT decide resuscitation.
- Heart rate is the most important indicator of the need for and success of resuscitation.
- Start PPV if apnoeic/gasping OR HR <100; rate 40–60/min, term starts on room air.
- Ventilation not working? → MRSOPA (Mask, Reposition, Suction, Open mouth, Pressure, Alternative airway).
- Chest compressions if HR <60 after 30 s of effective PPV — two-thumb technique, 3:1 ratio, switch to 100% O₂.
- Adrenaline if HR <60 after 30 s PPV + 60 s compressions: IV 0.01–0.03 mg/kg (1:10,000) preferred over ET.
- Volume expander = NS/RL 10 mL/kg for hypovolaemia; no routine bicarbonate or naloxone.
- Meconium + non-vigorous → start PPV; no routine tracheal suction.
- Therapeutic hypothermia (33.5 °C × 72 h, within 6 h) for moderate–severe HIE in babies ≥36 weeks — the only proven neuroprotection.