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April 1983

Noninvasive Intracranial Pressure Measurement in the Newborn: An Alternate Method

Am J Dis Child. 1983;137(4):332-335. doi:10.1001/archpedi.1983.02140300014004

• A pneumatic applanation tonometer designed for intraocular pressure measurement was modified to measure intracranial pressure (ICP) over the open anterior fontanel in well and sick new-born infants. The device consists of a sensing unit, a pneumatic-to-electric transducer, an amplifier, and a recording unit. Intracranial pressure in the first three days of life in 35 normal term infants was 5.3±1.3 mm Hg (mean ±SD) and in 25 normal preterm infants was 5.1 ± 0.9 mm Hg. Significant elevations in ICP were found in preterm infants with uncomplicated respiratory distress syndrome (6.9± 2.8 mm Hg) and in infants with complicated respiratory distress syndrome (10.1 ±3.1 mm Hg). In a group of sick term infants, intracranial pressure measurements were also significantly elevated (14.3 ±10.1 mm Hg). This monitor is simple, quick to calibrate and use, capable of reproducible results, and well suited for use in the intensive care unit.

(Am J Dis Child 1983;137:332-335)