What position should a nurse place a school-age child in for a lumbar puncture?

For a lumbar puncture in a school-age child, the ideal position is side-lying with knees flexed to the chest. This position helps to open the spaces between the vertebrae in the lumbar region, making it easier to access the spinal canal while minimizing discomfort for the child. When the knees are drawn up toward the chest, the vertebral column curves in a way that creates more room for the procedure.

This positioning also provides stability and support for the child, which can help reduce anxiety and promote a feeling of safety during the procedure. In some cases, a sitting position may also be used; however, the side-lying position is often preferred for the lumbar puncture itself due to the anatomical advantages it provides.