AUTOMATED WEANING OF RESPIRATORY SUPPORT AFTER AORTOCORONARY BYPASS ON THE BEATING HEART

Goal of the study: to evaluate efficiency and safety of INTELLiVENT-ASV ventilation after aortocoronary bypass (ACB) on the beating heart. Methods: 40 patients after ACB on the beating heart were randomly divided into the groups of automated weaning (n = 20, INTELLiVENT®-ASV) and protocolized weaning from artificial pulmonary ventilation (APV) (n = 20, SIMV + PS). 102 additional patients were selected retrospectively and formed the group of the standard non-protocolized weaning (SIMV + PS). Duration of post-surgery ventilation, its safety and personnel workload were evaluated. Results. Cessation of respiratory support in the protocolized weaning group required correction of ventilation parameters 7 (5-9) times on the average in each patient, while in case of automated weaning manual correction of parameters was required only in 2 patients out of 20. Episodes of deviation from safe ventilation were more often observed in the protocolized weaning group, and the total duration of such episodes was also higher in this group. Groups of automated and protocolized weaning did not differ regarding the duration of APV and ventilation duration was confidently longer in the group of non-protocolized weaning. Conclusion: Use of automated weaning from APV in the post-operative period of ACB is safe, it reduces workload on personnel and does not increase the duration of APV.

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