A nurse is caring for a newborn diagnosed with myelomeningocele. Which nursing intervention should be the highest priority immediately after birth?

The immediate priority is protecting exposed neural tissue from infection and trauma by covering the defect with sterile moist dressings and positioning prone. Other options are important but not the highest priority in the immediate postpartum period.

Understanding Myelomeningocele and Immediate Priorities

Myelomeningocele (MMC) is the most severe form of spina bifida, where the spinal cord and meninges protrude through a vertebral defect, forming a sac on the infant's back. The overriding priority in the immediate postnatal period is protecting this exposed neural tissue. The sac is often covered by a thin, delicate membrane that is highly vulnerable to rupture, desiccation, and microbial invasion. A breach in this membrane provides a direct portal for pathogens to enter the central nervous system, leading to meningitis, a life-threatening complication. The foundational principle of care is to maintain the integrity of the sac until surgical closure can be performed.

Analysis of the Correct Intervention

The correct answer is to cover the defect with sterile, moist saline dressings and position the infant prone. This intervention directly addresses the most immediate threat: infection and tissue injury. A sterile, non-adherent dressing moistened with sterile normal saline prevents the neural elements from drying out and provides a physical barrier against environmental contaminants. Positioning the infant in a prone (on the stomach) position, often with hips slightly flexed, minimizes pressure and tension on the sac, drastically reducing the risk of traumatic rupture. This aligns with the cited evidence emphasizing that "infection control" is a critical component of early MMC management before surgical repair ^[1]. The early postnatal period is a preparatory phase for surgery, and preventing infection is paramount for a successful surgical outcome.

Why Other Options Are Lower Priority

While all listed interventions are important aspects of MMC care, they are secondary to the immediate preservation of the sac's integrity.

- Measuring head circumference and monitoring for increased intracranial pressure: This assessment is crucial because most infants with MMC also have an Arnold-Chiari II malformation, which obstructs cerebrospinal fluid flow and causes hydrocephalus. However, the onset of increased intracranial pressure is not instantaneous at birth. Clinical signs like a rapidly increasing head circumference, bulging fontanelles, and separated sutures develop over hours to days. The immediate, seconds-to-minutes priority is preventing direct contamination of the open neural tube.

- Assessing lower extremity movement and sensation: A baseline neurological assessment is vital for determining the level of the lesion and planning care. However, this assessment does not take precedence over protecting the exposed spinal cord. Manipulating the infant's legs to test for movement and sensation could inadvertently put tension on or traumatize the sac, increasing the risk of injury. The neurological status can be safely assessed after the defect is protected and the infant is in a stable, prone position.

- Administering prophylactic antibiotics: Prophylactic antibiotics are a standard part of preoperative care to reduce the risk of infection. Nevertheless, systemic antibiotics are not a substitute for a physical barrier. The first line of defense is a sterile, moist dressing that mechanically prevents bacterial entry. Antibiotic administration is an important, but subsequent, step in the overall infection control strategy mentioned in the literature ^[1]. The physical protection of the wound site must be established first to maximize the effectiveness of systemic prophylaxis.