• I R Chambers, A D Mendelow, E J Sinar, and P Modha.
• Regional Medical Physics Department, Newcastle General Hospital, England.
• Neurosurgery. 1990 Mar 1;26(3):421-3.

AbstractThe aim of this study was to compare readings of intracranial pressure from a ventricular catheter with those obtained from a Camino catheter-tipped transducer. The Camino transducer was evaluated in two ways: firstly, when it was inserted by a subdural screw, and secondly, when it was inserted into a ventricular catheter using a ventricular monitoring kit. Data were recorded for 376 hours for the subdural screw method and for 486 hours for the ventricular monitoring kit. Average pressure readings were calculated every 5 minutes (10 half-minute values), and regression analysis was performed. For the subdural screw method, the correlation coefficient was 0.945 (gradient, 1.04; intercept, -5.51. The results from the ventricular monitoring kit showed that the correlation coefficient was 0.901 (gradient, 0.93; intercept, -0.92. The correlation between recordings of ventricular fluid pressure and the Camino recordings obtained from both subdural screw insertions and ventricular monitoring kits was good, with the subdural screw method proving more accurate and reliable in clinical use.

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