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Clinical validation of the Deltatrac monitoring system in mechanically ventilated patients

1995; Springer Science+Business Media; Volume: 21; Issue: 2 Linguagem: Inglês

10.1007/bf01726538

1432-1238

S. Tissot, B. Delafosse, Olivier Bertrand, Y. Bouffard, J.P. Viale, G. Annat,

Intensive Care Unit Cognitive Disorders

To evaluate a monitor of pulmonary gas exchange (Deltatrac, Datex) in a clinical setting. After in vitro evaluation, comparison over 2 min between $$\dot VO_2 $$ and $$\dot VCO_2 $$ values measured by the Deltatrac and the Douglas bag technique. Comparisons were also achieved over 8 h periods between the Deltatrac and a system using a mass-spectrometer. Polyvalent intensive care unit (ICU 15 beds) in a 1200 bed general hospital. Comparison with the Douglas bag technique in 10 patients undergoing controlled ventilation. Comparison with the massspectrometer system in 25 other patients undergoing controlled or pressure support ventilation. Compared to the results obtained by the Douglas bag technique, the bias (±2SD) for $$\dot VO_2 $$ and $$\dot VCO_2 $$ was −3.5±26.6 and 6.1±12.7 ml·min−1, respectively. By comparison with the mass-spectrometer system, the bias for $$\dot VO_2 $$ and RQ was −5.8±16.0 ml·min−1 and 0.018±0.048, respectively. No drift between the two systems was observed over time. The Deltatrac appears suitable for $$\dot VO_2 $$ and $$\dot VCO_2 $$ measurements in ventilated patients and equivalent to a mass-spectrometer system for long term measurements.