The nervous parent asks when the big "soft spot" (anterior fontanel) will be closed. The nurse's most informative response would be

A. Trientine: Trientine is a medication used to treat copper overload in conditions like Wilson's disease. It is not indicated for iron overdose or toxicity.

B. Dimercaprol: Dimercaprol, also known as BAL (British Anti-Lewisite), is a chelating agent used to treat heavy metal poisoning but is not primarily used for iron overload or toxicity.

C. Ferrous gluconate: Ferrous gluconate is an iron supplement used to treat iron-deficiency anemia by providing additional iron to the body. It is not appropriate for treating iron overdose, as it would worsen the situation.

D. Deferoxamine.

Iron overdose, also known as iron toxicity, can lead to serious complications, including cardiac dysrhythmias. Deferoxamine is a chelating agent used to remove excess iron from the body in cases of iron overload or toxicity, such as in patients with conditions like sickle cell anemia who require frequent blood transfusions. It binds to excess iron and helps excrete it from the body, reducing the risk of iron-related complications, including cardiac issues.

A. A fontanelle that bulges with crying.

Myelomeningocele is a congenital neural tube defect that involves the spinal cord. It is associated with an increased risk of hydrocephalus, which can lead to increased intracranial pressure (ICP). The fontanelle (soft spot) on an infant's head can provide insight into ICP. When an infant with myelomeningocele has an increase in intracranial pressure, the fontanelle may bulge, especially when the infant cries. This is due to the buildup of cerebrospinal fluid within the skull.

B. Increased respiratory rate: While increased intracranial pressure can affect various body systems, an increased respiratory rate is not a specific sign of ICP associated with myelomeningocele.

C. A high-pitched cry: A high-pitched cry is not typically associated with increased intracranial pressure in the context of myelomeningocele. Signs of ICP in infants may include irritability, lethargy, vomiting, and changes in head circumference.

D. Tachycardia: Tachycardia can be a response to stress or discomfort in an infant, but it is not a specific indicator of increased intracranial pressure related to myelomeningocele.