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The fontanelle tonometer: A noninvasive method for measurement of intracranial pressure

  • James A. Menke
    Correspondence
    Reprint address: Division of neonatology, Columbus Children's Hospital, 700 Children's Dr., Columbus, OH 43205.
    Affiliations
    Department of Pediatrics S.I.U. School of Medicine, Springfield, Ill. USA

    Department of Surgery S.I.U. School of Medicine, Springfield, Ill. USA

    Division of Statistics and Measurements, S.I.U. School of Medicine, Springfield, Ill. USA

    St. John's Hospital, Springfield, Ill. USA
    Search for articles by this author
  • Richard Miles
    Affiliations
    Department of Pediatrics S.I.U. School of Medicine, Springfield, Ill. USA

    Department of Surgery S.I.U. School of Medicine, Springfield, Ill. USA

    Division of Statistics and Measurements, S.I.U. School of Medicine, Springfield, Ill. USA

    St. John's Hospital, Springfield, Ill. USA
    Search for articles by this author
  • Michael McIlhany
    Affiliations
    Department of Pediatrics S.I.U. School of Medicine, Springfield, Ill. USA

    Department of Surgery S.I.U. School of Medicine, Springfield, Ill. USA

    Division of Statistics and Measurements, S.I.U. School of Medicine, Springfield, Ill. USA

    St. John's Hospital, Springfield, Ill. USA
    Search for articles by this author
  • Mohammed Bashiru
    Affiliations
    Department of Pediatrics S.I.U. School of Medicine, Springfield, Ill. USA

    Department of Surgery S.I.U. School of Medicine, Springfield, Ill. USA

    Division of Statistics and Measurements, S.I.U. School of Medicine, Springfield, Ill. USA

    St. John's Hospital, Springfield, Ill. USA
    Search for articles by this author
  • Carlos Chua
    Affiliations
    Department of Pediatrics S.I.U. School of Medicine, Springfield, Ill. USA

    Department of Surgery S.I.U. School of Medicine, Springfield, Ill. USA

    Division of Statistics and Measurements, S.I.U. School of Medicine, Springfield, Ill. USA

    St. John's Hospital, Springfield, Ill. USA
    Search for articles by this author
  • Ellis Schwied
    Affiliations
    Department of Pediatrics S.I.U. School of Medicine, Springfield, Ill. USA

    Department of Surgery S.I.U. School of Medicine, Springfield, Ill. USA

    Division of Statistics and Measurements, S.I.U. School of Medicine, Springfield, Ill. USA

    St. John's Hospital, Springfield, Ill. USA
    Search for articles by this author
  • Thomas G. Menten
    Affiliations
    Department of Pediatrics S.I.U. School of Medicine, Springfield, Ill. USA

    Department of Surgery S.I.U. School of Medicine, Springfield, Ill. USA

    Division of Statistics and Measurements, S.I.U. School of Medicine, Springfield, Ill. USA

    St. John's Hospital, Springfield, Ill. USA
    Search for articles by this author
  • Narinder N. Khanna
    Affiliations
    Department of Pediatrics S.I.U. School of Medicine, Springfield, Ill. USA

    Department of Surgery S.I.U. School of Medicine, Springfield, Ill. USA

    Division of Statistics and Measurements, S.I.U. School of Medicine, Springfield, Ill. USA

    St. John's Hospital, Springfield, Ill. USA
    Search for articles by this author
      This paper is only available as a PDF. To read, Please Download here.
      The use of a modified pneumotonometer as a nonivasive method to measure intracranial pressure through the fontanel was evaluated in the animal laboratory and in the clinical setting. Pressure measured with the tonometer from a surgically created fontanel in an adult mongrel dog demonstrated good correlation with pressure measured from an epidural balloon catheter. Pressure recorded with the tonometer was compared with direct measurements in a single infant. There were 20 paired measurements with a correlation coefficient of 0.91. Fontanel pressure was measured in 72 healthy infants. The mean pressure was 7.0 mm Hg with a standard deviation of 1.75. This result compares favorably with previous reporis utilizing other methods. The machine is safe and simple to use.
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