Authors: Sven Lethvall Sophie Lindgren Stefan Lundin Ola Stenqvist
Publish Date: 2004/03/04
Volume: 30, Issue: 4, Pages: 686-692
Abstract
Tidal volumes of 6 8 and 10 ml/kg body weight with a set respiratory rate of 20 breaths per minute were used in a random order with both doublelumen ventilation and standard endotracheal tube ventilation Measurements of ventilatory and circulatory parameters were obtained after steady state at each experimental stage With a tidal volume of 6 ml/kg PaCO2 was reduced from 109 kPa 95 CI 90–129 with a standard endotracheal tube to 82 kPa 95 CI 70–94 with doublelumen ventilation This corresponds to a reduction in carbon dioxide levels by 25 At 6 ml/kg pH increased from 717 95 CI 709–724 with a standard endotracheal tube to 727 95 CI 721–732 with doublelumen ventilation Tracheal pressure was monitored continuously and no difference between single or doublelumen ventilation was noted at corresponding levels of ventilation There was no formation of autoPEEP Partial tube obstruction due to secretions was not observed during the experiments
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