The impact of a lumbar puncture in a newborn is very minimal because the trauma of a lumbar puncture is exceptionally small. The lumbar puncture needle will be used by the newborn with an ordinary syringe needle, so its trauma is small and the newborn’s wound will gradually heal itself with the withdrawal of the needle, so parents can rest assured. The main effects of lumbar puncture on the newborn are as follows: First, it causes pain in the newborn’s lower back. This is difficult to avoid, but the pain is often very short-lived, and is only felt the moment the needle enters the skin of the newborn during lumbar puncture.