My daughter recently had a Lumbar Puncture and was told that she has increased pressure. I just want to know what is the normal pressure for a 9 yr. old child? I was told her pressure was 22. I was also told that normal pressure should be 10-15? I am getting confused with information that I am finding online as to what normal pressure should be. Things that I am reading indicate that normal pressure is higher than what I have been told. Can you clear up any of my confusion?

Thank you