After a forceps-assisted birth, the mother is observed to have continuous bright red lochia but a firm fundus.
What other data indicates the presence of a potential vaginal wall hematoma?

Choice A rationale

Cystic fibrosis is an autosomal recessive genetic disorder caused by a mutation in the CFTR gene, affecting chloride transport and leading to production of abnormally thick mucus, primarily impacting the respiratory and digestive systems. It is a chronic condition and not an acute condition occurring immediately at birth requiring immediate surfactant administration through an endotracheal tube.

Choice B rationale

Bronchopulmonary dysplasia (BPD), sometimes referred to as chronic lung disease, is a long-term respiratory complication, mainly affecting premature infants who required prolonged mechanical ventilation and oxygen. It is characterized by abnormal lung development and fibrosis. While it is linked to prematurity, it is a chronic sequel, not the immediate neonatal condition that necessitates the initial surfactant intervention.

Choice C rationale

A pneumothorax is the presence of air in the pleural space, which collapses the lung and leads to acute respiratory distress. While it can occur in preterm infants, especially those on mechanical ventilation, it is a mechanical complication requiring a chest tube for air aspiration, not a condition caused by primary surfactant deficiency that is treated with exogenous surfactant administration.

Choice D rationale

Respiratory Distress Syndrome (RDS), historically called Hyaline Membrane Disease, is the leading cause of morbidity in premature infants. It results from a developmental deficiency of pulmonary surfactant, a lipoprotein that lowers alveolar surface tension. This deficiency causes widespread alveolar collapse (atelectasis) and decreased lung compliance, necessitating immediate exogenous surfactant replacement via the endotracheal tube to improve lung function.

Choice A rationale

Hip dislocation is more commonly associated with overt forms of spina bifida, particularly meningocele or myelomeningocele, which involve neurological deficits causing muscle imbalances and subsequent joint deformities. Spina bifida occulta, characterized by a bony defect in the vertebral arch without protrusion of the spinal cord or meninges, typically does not involve the severe neurological or musculoskeletal deficits required to cause hip dislocation.

Choice B rationale

Hydrocephalus (excess cerebrospinal fluid in the brain ventricles) is a significant complication frequently seen in myelomeningocele due to the associated Chiari II malformation, which obstructs cerebrospinal fluid flow. In spina bifida occulta, the neural structures are generally intact and the spinal cord is not involved, so the complex pathophysiology leading to hydrocephalus is absent, and thus, it is not an expected finding.

Choice C rationale

A dimple in the sacral area (a localized skin abnormality over the defect) is a classic, though not always present, external sign of spina bifida occulta, often accompanied by a tuft of hair or a birthmark (e.g., hemangioma). This finding is a cutaneous marker indicating the underlying failure of the posterior vertebral arches to fuse completely, forming the bony defect.

Choice D rationale

Flaccid paralysis of the lower extremities is indicative of severe lower motor neuron damage, which occurs when the spinal cord or nerve roots are significantly involved, as in myelomeningocele. Spina bifida occulta is distinguished by its occult (hidden) nature, as the spinal cord and meninges are typically covered by skin and often remain structurally and neurologically intact, thus not causing paralysis.