CONTINUOUS END-TIDAL CARBON-DIOXIDE MONITORING DURING NORMOFREQUENT JET-VENTILATION

Background: Continuous end-tidal carbon dioxide (ETCO(2)) monitoring d uring normofrequent jet-ventilation (NFJV) has not previously bi en su ccessful and no correspondence between ETCO(2) and arterial carbon dio xide (PaCO2) demonstrated. Methods: During NFJV jet-ventilation in 19 healthy volunteers, continuous ETCO(2) was measured and compared to Pa CO2 values. The original ETCO(2) sampling line from our Datex CO2 meas uring equipment was placed longitudinally against a suction catheter a nd both were wrapped with aluminium foil. They were placed 4-5 an abov e the carina and the position was verified with a fiberoptic bronchosc ope. Results: The correlation between methods gave a Pearson's product moment correlation (r value of 0.836, significant at the P<0.001 leve l, indicating a close correlation between methods. A difference agains t mean scatter diagram confirmed that ETCO(2) and PaCO2 measurements a re of equal value in monitoring healthy patients during NFJV. Conclusi on: A valuable method oi continuous ETCO(2) monitoring during NFJV is presented. (C) Acta Anaesthesiologica Scandinavica 40 (1996)