Chest
Clinical InvestigationsResponse Characteristics of a Dual Transcutaneous Oxygen/Carbon Dioxide Monitoring System
Section snippets
MATERIALS AND METHODS
The transcutaneous combined PO2PCO2 monitor (Radiometer TCM3) is 24 × 8 × 23 cm and weighs 2.7 kg. The front panel displays time or site temperature, PO2, and PCO2. The unit is powered by-battery or a standard electrical outlet. It is capable of analog or serial digital outputs. The combined electrode is 15 mm in diameter and 11 mm in height and weighs 3.8 g.
RESULTS
The application of the dual transcutaneous monitor was simple and involved only brief skin preparation (cleaning with an alcohol swab). No subject complained of discomfort associated with the monitor. There was mild transient erythema over the site following prolonged use (ie,. 2 hours).
DISCUSSION
In our previous experience with transcutaneous electrodes, we reported on the traumatizing effects on the skin, the fastidious care that was necessary in skin preparation, and the inaccuracies that arose when preparation was hastened or incomplete.3 By contrast, the system reported herein was simple to apply, took no longer than 10 minutes to obtain stable readings, and caused no skin trauma either from abrasion or heat in the period tested. As to the performance of the monitoring system, we
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Manuscript received August 09; revision accepted October 11.