Bulging sack like lesion filled with spinal fluid and spinal cord element is:

ESIC Nursing Officer - 2019 (Shift-2)

Child Health Nursing (Pediatrics)

Easy

Appeared in: ESIC Nursing Officer - 2019 (Shift-2)

Explanation

Myelomeningocele is the most severe form of spina bifida, characterized by a sac protruding from the spinal column.
The defining feature, as stated in the question, is that this sac contains meninges (protective membranes), cerebrospinal fluid (CSF), and, critically, elements of the spinal cord and/or nerve roots.
This exposure and malformation of neural tissue invariably lead to significant neurological deficits, such as paralysis and bowel/bladder dysfunction, below the level of the lesion.
The provided image of a newborn with a large, open sac on the lower back is a classic clinical presentation of myelomeningocele.

Option A: A meningocele sac contains only meninges and spinal fluid, not spinal cord elements. The spinal cord itself is not displaced into the sac.
Option C: Hydrocephalus is the accumulation of excess cerebrospinal fluid within the brain's ventricles, causing increased intracranial pressure. It is a common complication of myelomeningocele but not the primary spinal lesion itself.
Option D: Spina bifida occulta is the mildest form, characterized by a hidden vertebral defect with no external sac or protrusion of spinal contents. The skin over the defect is intact.

Visual 1: Diagram: A comparative diagram showing cross-sections of a normal spine, spina bifida occulta, meningocele, and myelomeningocele. This helps visualize what is inside the sac for each type.
Visual 2: Infographic: A summary of pre-operative nursing care for an infant with myelomeningocele, highlighting key actions like positioning, sac care, and monitoring.
Visual 3: Photograph: An image showing the correct prone positioning of an infant with a myelomeningocele, with the sterile dressing applied to the sac.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Identification and differentiation of types of neural tube defects (spina bifida) as background academic context rather than a clinical decision trigger.
Protecting the exposed sac from injury and infection is the absolute top nursing priority before surgery. A ruptured sac can lead to meningitis, which can be fatal or cause severe brain damage.
Nurses play a crucial role in monitoring for the development of hydrocephalus, a frequent complication. Daily head circumference measurement is a simple yet vital assessment to detect this early.
What if? If the sac were fully covered by intact skin and the infant had no neurological deficits, the diagnosis would more likely be a meningocele. The urgency for surgery might be less, and the long-term prognosis would be significantly better.

How to Approach the Question

First, identify the key terms in the question: 'bulging sack', 'spinal fluid', and 'spinal cord element'.
The term 'spinal cord element' is the most critical piece of information. This tells you that neural tissue is involved in the lesion.
Next, review the options and recall the definitions of the different types of neural tube defects.
Meningocele involves meninges and fluid, but not the cord.
Myelomeningocele involves the meninges, fluid, AND the cord/nerves.
Spina bifida occulta is a hidden defect with no sac.

Concept Tested & Keywords

Concept Tested: Identification and differentiation of types of neural tube defects (spina bifida).
Stem keywords: Bulging sack like lesion, spinal fluid, spinal cord element
Lead-in keywords: is
Clinical cues: The presence of 'spinal cord element' in the sac is the defining feature that points to myelomeningocele.

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