Speed of response and accuracy of two transcutaneous carbon dioxide monitors
Two instruments (Radiometer and Hewlett-Packard) for measuring transcutaneous carbon dioxide levels have been compared. Their warm-up times, speed of response and accuracy in predicting arterial PCO 2 have been assessed in six normal subjects and ten patients with respiratory...
| Main Authors: | , , , |
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| Format: | Journal article |
| Language: | French |
| Published: |
1983
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| Summary: | Two instruments (Radiometer and Hewlett-Packard) for measuring transcutaneous carbon dioxide levels have been compared. Their warm-up times, speed of response and accuracy in predicting arterial PCO 2 have been assessed in six normal subjects and ten patients with respiratory problems. They both performed well with similar accuracy in predicting PaCO 2 [95% confidence limits ± 0.9 kPa (6.7 mmHg)]. The warm-up time following application depended on actual PaCO 2 but was approximately 10 min for normal subjects and 15 min in patients. Their response to step changes in PaCO 2 was complete in approximately 6 min. Prior skin abrasion (essential for the Hewlett-Packard) increased the speed of response of the Radiometer considerably and this is the faster instrument. The Hewlett-Packard proved easier to use. These instruments are a significant advance in non-invasive monitoring. |
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