Prehospital Academy Lesson 39.6
Caring for the Neonate
This lesson provides essential considerations for EMTs regarding the care of newborns and neonates. Understanding the unique physiological characteristics and common emergencies in this population is critical for effective prehospital management and ensuring the best possible outcomes.
Definitions and General Pathophysiology
Newborn: Typically refers to an infant in the first few hours after birth.
Neonate: Refers to an infant within the first month after birth.
Most births (approximately 90-95%) are routine and occur without incident, requiring minimal intervention.
About 8% of newborns delivered each year weigh less than 5.5 lbs (2.5 kg) and may have an increased risk for needing resuscitation.
Transition from Fetal to Neonatal Circulation:
Fetal circulation differs significantly from postnatal circulation due to the presence of three major shunts that bypass the lungs and liver:
Ductus Venosus: Bypasses the liver, shunting oxygenated blood from the umbilical vein directly to the inferior vena cava.
Foramen Ovale: An opening between the right and left atria, allowing blood to bypass the pulmonary circulation.
Ductus Arteriosus: Connects the pulmonary artery to the aorta, shunting blood away from the non-functional fetal lungs.
At birth, the first breath, triggered by mild hypoxia and hypercapnia, increases pulmonary blood flow and facilitates the closure of these shunts, establishing independent neonatal circulation. Delays in this transition can lead to significant hypoxia and potential brain injury.
Assessment of the Neonate
APGAR Score: A rapid assessment performed at 1 and 5 minutes after birth (and every 5 minutes if score is <7) to evaluate the newborn's overall condition.
Appearance (skin color)
Pulse (heart rate)
Grimace (reflex irritability)
Activity (muscle tone)
Respiration (breathing effort)
Vital Signs: Heart rate (100-160 bpm), respiratory rate (30-60 breaths/min), temperature (97.7-99.5°F or 36.5-37.5°C).
Physical Assessment: Look for congenital abnormalities, signs of distress (e.g., central cyanosis, grunting, nasal flaring, retractions), and general activity level.
Blood Glucose: Neonates have limited glucose stores; hypoglycemia is a common and serious concern.
Management of the Neonate (General Principles)
Warmth: Prevent hypothermia by drying the newborn thoroughly, wrapping in warm blankets, and ensuring a warm environment.
Airway: Position the airway (sniffing position), suction mouth then nose only if secretions are obstructing breathing or if the newborn is not vigorous.
Breathing: Stimulate breathing by rubbing the back or flicking the soles of the feet. If not breathing or gasping, begin positive pressure ventilation (PPV).
Circulation: Assess heart rate. If <100 bpm, continue PPV. If <60 bpm despite effective PPV, begin chest compressions.
Oxygenation: Administer supplemental oxygen if central cyanosis is present or SpO2 is low (target SpO2 varies by age, refer to local protocols).
Blood Glucose Management: If hypoglycemia is suspected or confirmed, administer dextrose per protocol (e.g., D10 IV bolus; avoid D50 in neonates).
Transport: Rapid transport to a facility with neonatal care capabilities.
Parental Support: Keep parents informed and reassured.
Critical Thinking Questions
A newborn is delivered flaccid, apneic, and with a heart rate of 50 bpm. Outline your immediate assessment and resuscitation steps according to neonatal resuscitation principles.
Explain the physiological significance of the three fetal shunts (ductus venosus, foramen ovale, ductus arteriosus) and what happens to them at birth.
Why is maintaining normothermia critical for a neonate, and what are the primary methods an EMT can use to achieve this in the field?
What are the key differences in assessing a neonate's vital signs compared to an adult, and what specific values should an EMT be looking for?
Discuss the importance of blood glucose monitoring in neonates and the potential consequences of untreated hypoglycemia.