6.4 Resuscitation Protocols (NRP, PALS) & Shock Fluid Resuscitation
Key Takeaways
Neonatal Resuscitation Program (NRP) algorithms prioritize physiological lung inflation; effective positive pressure ventilation (PPV) via T-piece resuscitator is the primary intervention, with corrective MR. SOPA steps instituted before initiating chest compressions.
Neonatal CPR utilizes a 3:1 compression-to-ventilation ratio (90 compressions and 30 breaths delivering 120 events per minute) using the two-thumb encircling-hands technique, escalating to intravenous/intraosseous epinephrine (0.01-0.03 mg/kg of 1:10,000) if heart rate remains <60 bpm despite 60 seconds of effective PPV and compressions.
Pediatric Advanced Life Support (PALS) CPR utilizes a 15:2 ratio for two-rescuer healthcare teams with manual defibrillation at 2 J/kg initial escalating to 4 J/kg (max 10 J/kg), and synchronized cardioversion at 0.5-1.0 J/kg escalating to 2 J/kg for tachyarrhythmias with pulses.
Fluid resuscitation in pediatric hypovolemic and septic shock requires balanced crystalloid boluses of 10-20 mL/kg administered over 5-20 minutes with continuous reassessment for fluid overload (hepatomegaly, rales), while NRP volume expansion in the newborn is 10 mL/kg of normal saline or blood over 5–10 minutes, given more slowly to preterm infants outside resuscitation.
Hemorrhagic shock refractory to initial crystalloid mandates balanced emergency uncrossed blood product resuscitation (10-20 mL/kg PRBCs, plasma, and platelets in a 1:1:1 ratio) via rapid infusors equipped with in-line blood warmers to avert lethal triad hypothermia, coagulopathy, and acidosis.
Resuscitation Protocols (NRP, PALS) & Shock Fluid Resuscitation
Resuscitation during neonatal and pediatric critical care transport occurs in high-stress, physically constrained environments where standard hospital resources are miles away. Transport clinicians must maintain rapid, algorithmic mastery of the Neonatal Resuscitation Program (NRP) and Pediatric Advanced Life Support (PALS) guidelines, while understanding the physiological nuances that separate neonatal asphyxial arrest from pediatric shock-induced cardiac arrest.
The Resuscitation Continuum: Neonatal (NRP) vs. Pediatric (PALS)
The fundamental difference between neonatal and pediatric resuscitation lies in primary etiology:
- Neonates (NRP): Greater than 90% of neonatal arrests stem from respiratory failure, asphyxia, or failure of physiological lung transition (retained fetal lung fluid, lack of surfactant, or alveolar hypoventilation). Cardiac arrest is almost exclusively secondary to profound hypoxemic bradycardia. Resuscitation is therefore ventilation-centric.
- Pediatric Patients (PALS): Cardiac arrest typically results from progressive, uncompensated shock (hypovolemic, septic, or distributive) or acute respiratory failure degenerating into secondary asystole or PEA. Sudden primary ventricular arrhythmias (VF/pVT) account for 5–15% of pediatric arrests, requiring immediate electrical defibrillation.
NRP Algorithm in Transport: The Golden Minute & MR. SOPA
During delivery room or referring nursery stabilization, the transport team executes the Golden Minute. (For vigorous term infants and preterm infants who do not need immediate resuscitation, the 2025 guidelines recommend deferring cord clamping for at least 60 seconds.)
- Initial Steps (First 30 Seconds): Provide warmth (pre-warmed transport isolette or radiant warmer), position the head and neck in a neutral or slightly extended 'sniffing' position, clear secretions if obstructing the airway, dry the infant, and stimulate respiration.
- Assessment (At 30 Seconds): Evaluate respirations and heart rate (HR via 3-lead ECG or auscultation of the precordium for 6 seconds multiplied by 10).
- If the infant is apneic, gasping, or has bpm: Initiate Positive Pressure Ventilation (PPV) immediately using a T-piece resuscitator or flow-inflating bag at 30–60 breaths/min (2025 AHA/AAP guidelines), starting with peak inflation pressures of about 20–30 cmH2O and adjusting to chest movement. Place a pulse oximeter as soon as possible.
- Initial Oxygen Concentration: For infants born at 35 weeks or later, begin PPV with room air (21% oxygen). The 2025 AHA/AAP guidelines say that for preterm infants born before 32 weeks it may be reasonable to begin with 30% to 100% oxygen; infants in between start with a low concentration. In every case, titrate to the pre-ductal saturation targets (about 85–95% by 10 minutes), because hyperoxia is toxic to neonatal retinal and cerebral tissue.
The MR. SOPA Ventilation Corrective Steps
If the heart rate does not rise within 15 seconds of initiating PPV, the clinician must assume the lungs are not being ventilated and immediately execute the MR. SOPA algorithm before considering chest compressions:
- M - Mask Adjustment: Reapply the mask to achieve a complete, airtight seal over the nose and mouth.
- R - Reposition Airway: Adjust the head into the neutral sniffing position; avoid hyperextension or flexion. (Deliver 5 breaths; if no chest rise, proceed to S and O)
- S - Suction Mouth and Nose: Suction the mouth first, then the nose using a bulb syringe or suction catheter (negative pressure 80–100 mmHg).
- O - Open Mouth: Gently open the infant's jaw and lift the chin forward. (Deliver 5 breaths; if no chest rise, proceed to P)
- P - Pressure Increase: Increase peak inspiratory pressure (PIP) in increments of 5–10 (maximum 30–40 ) until visible bilateral chest movement is achieved. (If no chest rise, proceed to A)
- A - Alternative Airway: Insert an endotracheal tube (ETT), or a laryngeal mask for infants born at 34 0/7 weeks or later (the 2025 guidelines say a laryngeal mask may even be the primary interface in this group). Video laryngoscopy can improve intubation success.
Neonatal Chest Compressions & Resuscitation Medications
Chest compressions are indicated only when the heart rate remains below 60 bpm despite at least 30 seconds of effective PPV that moves the chest, preferably through an advanced airway.
- Technique: NRP uses the two-thumb encircling-hands technique, which produces higher coronary perfusion pressure and deeper compressions than the two-finger technique (no longer recommended for infant CPR in the 2025 AHA guidelines). Compress the lower third of the sternum, above the xiphoid, to about one-third of the anterior-posterior diameter, and consider switching compressors every 2–5 minutes.
- Ratio & Cadence: 3:1 ratio (3 compressions to 1 ventilation). Coordinated cycle: 90 compressions and 30 breaths per minute, totaling 120 events per minute ("1-and-2-and-3-and-breathe-and..."). Give 100% whenever chest compressions are initiated.
- Epinephrine Administration: Indicated if bpm despite 60 seconds of coordinated compressions and ventilation.
- IV / IO Dose: 0.01 to 0.03 mg/kg (0.1 to 0.3 mL/kg of the 0.1 mg/mL concentration, formerly labeled 1:10,000); the NRP textbook suggests starting at 0.02 mg/kg. Give as a rapid push followed by a saline flush (NRP suggests 3 mL), repeating every 3–5 minutes while the heart rate stays below 60.
- Endotracheal (ETT) Dose: Only while IV/IO access is being established; 0.05 to 0.1 mg/kg (0.5 to 1.0 mL/kg of 1:10,000) followed by positive pressure breaths.
- Volume Expansion: If acute feto-maternal hemorrhage or abruption is suspected and the infant is pale, poorly perfused, and unresponsive to epinephrine: administer 10 mL/kg of normal saline or O-negative uncrossed PRBCs over 5 to 10 minutes (NRP), repeating if needed.
PALS Cardiac Arrest & Electrical Therapy in Pediatric Transport
When managing a pediatric patient in cardiac arrest, the transport team integrates high-quality CPR with rapid rhythm assessment and weight-based defibrillation:
High-Quality Pediatric CPR Parameters
- Compression Ratio: 15:2 for two-rescuer healthcare provider teams (30:2 if lone rescuer).
- Continuous CPR with Advanced Airway: Once an ETT or supraglottic airway is secured, deliver continuous chest compressions at 100–120/min without pausing for ventilations; deliver 1 breath every 2 to 3 seconds (20–30 breaths/min).
- Depth: Depress at least one-third the AP diameter of the chest (approximately 1.5 inches / 4 cm in infants; 2 inches / 5 cm in children).
- Infant Hand Position (2025): Use the heel of one hand or the two-thumb encircling-hands technique; the two-finger technique is no longer recommended. Keep pauses in compressions under 10 seconds.
- Monitoring During CPR (2025): With an arterial line in place, it may be reasonable to target a diastolic pressure of at least 25 mmHg in infants and 30 mmHg in children. Do not use an EtCO2 value alone to decide to stop resuscitation.
Rhythm Classification & Electrical Dosing
| Rhythm Category | Electrocardiographic Rhythms | First-Line Pharmacotherapy | Electrical Therapy Energetics |
|---|---|---|---|
| Shockable | Ventricular Fibrillation (VF) / Pulseless Ventricular Tachycardia (pVT) | Epinephrine 0.01 mg/kg IV/IO (0.1 mL/kg of 1:10,000) every 3–5 min. Amiodarone 5 mg/kg IV/IO bolus (max 300 mg, repeatable twice) or Lidocaine 1 mg/kg loading. | Defibrillation: Initial shock: 2 J/kg; Second shock: 4 J/kg; Subsequent shocks: J/kg up to 10 J/kg (or standard adult maximum 200–360 J). |
| Non-Shockable | Asystole / Pulseless Electrical Activity (PEA) | Epinephrine 0.01 mg/kg IV/IO immediately; repeat every 3–5 minutes. Focus on reversible causes (Hs & Ts). | Defibrillation is strictly contraindicated. CPR and immediate ventilation are primary. |
| Unstable Tachycardia | Supraventricular Tachycardia (SVT) or VT with pulses (hemodynamically unstable) | Adenosine 0.1 mg/kg rapid push (max 6 mg), second dose 0.2 mg/kg (max 12 mg) if IV available and no delay. For refractory SVT with compromise and no expert available, IV procainamide, amiodarone, or sotalol may be considered (2025). | Synchronized Cardioversion: Initial: 0.5 to 1.0 J/kg; escalate to 2 J/kg if unsuccessful. |
Fluid Resuscitation in Pediatric Shock: Crystalloids & Volumes
Fluid resuscitation must be tailored to the underlying shock pathophysiology. Blind over-hydration in non-hypovolemic states causes pulmonary edema, impaired oxygen diffusion, and worsened survival.
1. Hypovolemic & Septic Shock
- Fluid Type: Balanced crystalloids (e.g., Plasma-Lyte, Normosol-R, or Ringer's Lactate) are increasingly preferred over 0.9% Normal Saline for large-volume resuscitation because massive saline infusions trigger hyperchloremic metabolic acidosis and renal vasoconstriction.
- Bolus Volume: 10 to 20 mL/kg administered as a rapid push over 5 to 20 minutes (using push-pull syringe techniques or pressurized bags).
- Reassessment Points: Reassess liver edge size, respiratory effort, lung sounds, heart rate, and capillary refill after each bolus. If signs of fluid overload appear (hepatomegaly, crackles, worsening hypoxemia), immediately halt fluid administration and initiate inotropes.
2. Cardiogenic Shock & DKA
- Cardiogenic Shock (Myocarditis, Arrhythmogenic, Congenital): The myocardium is failing and cannot handle preload excess. Give smaller boluses of 5 to 10 mL/kg over 10 to 20 minutes (PALS), reassessing the liver edge and lungs after each. Early inotropic support is essential.
- Diabetic Ketoacidosis (DKA): ISPAD 2022 guidance gives an initial 10–20 mL/kg isotonic bolus over 20–30 minutes (faster if the child is in shock), then replaces the deficit over 24–48 hours (Section 14.2).
3. Neonatal Fluid Resuscitation
- In preterm neonates, rapid volume expansion may contribute to intraventricular hemorrhage (IVH) through sudden surges in cerebral blood flow. Outside resuscitation, boluses are usually 10 mL/kg over about 10–30 minutes. During delivery-room resuscitation for suspected blood loss, NRP gives 10 mL/kg over 5–10 minutes, and septic neonates may need repeated boluses with close reassessment.
Blood Product Resuscitation & Massive Transfusion Protocols (MTP)
In pediatric hemorrhagic shock (blunt/penetrating trauma, gastrointestinal hemorrhage, surgical disruption), crystalloid resuscitation must be minimized. Aggressive crystalloid administration dilutes clotting factors, worsens acidosis, and promotes the "lethal triad" of hypothermia, coagulopathy, and metabolic acidosis.
- Initial Blood Transfusion: If the child remains in uncompensated shock after an initial 10–20 mL/kg crystalloid bolus, immediately transition to 10 to 20 mL/kg of packed red blood cells (PRBCs) (emergency uncrossed O-negative blood).
- Balanced Massive Transfusion (1:1:1 Ratio): When hemorrhage is severe or ongoing, activate the Pediatric Massive Transfusion Protocol, delivering PRBCs, Fresh Frozen Plasma (FFP), and Platelets in a 1:1:1 ratio.
- In-Line Blood Warming & Calcium Monitoring: Blood products stored at 4°C induce rapid hypothermia during high-speed transit. Transport teams must use approved, battery-operated in-line rapid blood warmers. Citrate in stored blood chelates circulating ionized calcium; transport clinicians must monitor ionized calcium and administer 10% Calcium Gluconate (50–100 mg/kg) or 10% Calcium Chloride (10–20 mg/kg) to prevent citrate-induced myocardial depression.
A transport team arrives at an emergency department where a 4-year-old child weighing 16 kg is in pulseless cardiac arrest. The monitor reveals coarse ventricular fibrillation. Continuous CPR is underway. What is the correct initial manual defibrillation energy dose, subsequent defibrillation energy dose, and the appropriate synchronized cardioversion dose if the child were instead to convert to supraventricular tachycardia with a pulse and severe hypotension?
Defibrillate initially at 0.5 J/kg (8 J); subsequent shocks at 1 J/kg (16 J); synchronized cardioversion at 4 J/kg (64 J).
Defibrillate initially at 2 J/kg (32 J); subsequent shocks at 4 J/kg (64 J); synchronized cardioversion at 0.5 to 1.0 J/kg (8 to 16 J).
Defibrillate initially at 10 J/kg (160 J); subsequent shocks at 20 J/kg (320 J); synchronized cardioversion at 5 J/kg (80 J).
Defibrillate initially at 4 J/kg (64 J); subsequent shocks at 8 J/kg (128 J); synchronized cardioversion at 2 J/kg (32 J).
A full-term neonate is delivered via emergency cesarean section for fetal distress. At 1 minute of life, the infant is apneic with a heart rate of 50 bpm. The transport team positions the airway, suctions, dries, and stimulates the infant, then delivers positive pressure ventilation via T-piece resuscitator for 30 seconds. The heart rate remains 45 bpm, and the chest is not moving visibly. What is the immediate next intervention according to the Neonatal Resuscitation Program (NRP)?
Immediately begin chest compressions at a 15:2 ratio and administer intravenous atropine 0.1 mg.
Administer a rapid fluid bolus of 20 mL/kg normal saline over 5 minutes and defibrillate at 2 J/kg.
Perform the MR. SOPA ventilation corrective steps to achieve effective positive pressure ventilation that moves the chest before initiating chest compressions.
Place an emergency umbilical venous line and administer high-dose epinephrine at 0.1 mg/kg IV immediately.
A 5-year-old child with a 3-day history of high fever, viral prodrome, and lethargy presents with severe tachypnea, grunting, gallop rhythm on cardiac auscultation, hepatomegaly 4 cm below the right costal margin, and fine bibasilar rales. The blood pressure is 72/40 mmHg (MAP 50 mmHg), capillary refill is 4 seconds, and extremities are cool. The referring physician is preparing to infuse a rapid 20 mL/kg normal saline bolus. How should the transport clinician intervene regarding fluid resuscitation and hemodynamic management?
Support the referring physician and double the bolus to 40 mL/kg over 10 minutes, because all forms of pediatric shock require aggressive crystalloid expansion.
Advise giving 20 mL/kg of 3% hypertonic saline to draw fluid out of the alveoli and promote renal perfusion.
Recommend withholding all fluids, performing immediate electrical cardioversion at 2 J/kg, and infusing high-dose sodium bicarbonate at 2 mEq/kg.
Recognize clinical signs of cardiogenic shock and fluid overload (gallop, hepatomegaly, rales); advise against a rapid 20 mL/kg bolus, recommend a cautious 5 to 10 mL/kg crystalloid bolus over 10 to 20 minutes with reassessment, and initiate inotropic support.
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