A nurse is caring for a 3-month-old infant with congenital clubfoot who is scheduled to begin serial casting treatment. What is the most important nursing intervention during the casting process?

Monitoring circulation, sensation, and movement every 2 hours for the first 24 hours is critical to detect complications like compartment syndrome. Ice packs can damage the cast, elevation above heart level is not always feasible, and removing the cast daily disrupts treatment.

Understanding the Priority During Serial Casting
For an infant with congenital clubfoot (congenital talipes equinovarus, CTEV) undergoing serial casting, such as with the Ponseti method, the manipulation and casting process changes the foot's position. This can temporarily compromise blood flow or nerve function due to pressure from the cast. The most critical nursing intervention is performing frequent neurovascular assessments to detect early signs of compartment syndrome or pressure injury, which are medical emergencies.

Why Option 1 is Correct
Monitoring circulation, sensation, and movement (CSM) of the toes every 2 hours for the first 24 hours is the priority. The Ponseti method involves a series of manipulations and casts, and while the provided systematic reviews focus on the technique's efficacy and tenotomy methods, the fundamental post-procedural risk with any casting is neurovascular compromise. In an infant, the earliest signs of an excessively tight cast are often subtle, including increased fussiness, changes in toe color or temperature, and decreased movement. A structured CSM assessment is the standard for identifying these changes before permanent damage occurs.

Analysis of Incorrect Options

Option 2: Apply ice packs to the cast for 20 minutes every hour to reduce swelling.
This is incorrect and potentially harmful. Applying ice to a wet plaster cast can prevent it from drying properly, leading to skin maceration and structural weakness. More critically, ice can cause vasoconstriction, which would further compromise the very neurovascular function the nurse is trying to protect. The goal is to maintain optimal circulation, not to reduce it.

Option 3: Keep the cast elevated above heart level at all times to prevent edema.
While elevation is a useful intervention to minimize swelling, it is not the most important intervention. The priority is assessing for the complications that elevation is meant to prevent. Furthermore, "at all times" is unrealistic and not a standard of care; the infant will be held for feeding and comfort. The core of nursing care is the assessment itself.

Option 4: Remove the cast daily for skin assessment and reapply immediately.
This action directly contradicts the fundamental principle of serial casting. The cast is applied by a trained provider to hold a precise, corrective position. Removing it daily would disrupt the correction process and could cause skin breakdown from repeated manipulation. The cast remains in place until the next weekly appointment for manipulation and cast change, as is standard in the Ponseti protocol. The nurse's role is to assess the skin at the cast edges and monitor for complications, not to remove the cast.