Final answer:
The data collection finding that should be reported to the registered nurse immediately is an increase in head circumference. This could indicate a malfunction or blockage in the VP shunt, leading to increased intracranial pressure.
Step-by-step explanation:
The data collection finding that should be reported to the registered nurse immediately is d. An increase in head circumference. Hydrocephalus is a condition characterized by the accumulation of excess cerebrospinal fluid (CSF) in the brain, leading to increased pressure inside the skull. A ventriculoperitoneal (VP) shunt is placed to help drain the excess CSF from the brain to the abdominal cavity. If there is an increase in head circumference after a shunt revision, it could indicate a malfunction or blockage in the shunt, leading to the accumulation of CSF and increased intracranial pressure. This is a critical finding that requires immediate attention from the registered nurse to prevent complications.