• Journal of critical care · Jun 2016

    Randomized Controlled Trial

    A randomized controlled trial of 2 protocols for weaning cardiac surgical patients receiving adaptive support ventilation.

    • M K P Tam, W T Wong, C D Gomersall, Q Tian, S K Ng, C C H Leung, and M J Underwood.
    • Department of Anaesthesia & Intensive Care, Prince of Wales Hospital, Shatin, Hong Kong.
    • J Crit Care. 2016 Jun 1; 33: 163-8.

    PurposeThis study aims to compare the effectiveness of weaning with adaptive support ventilation (ASV) incorporating progressively reduced or constant target minute ventilation in the protocol in postoperative care after cardiac surgery.Material And MethodsA randomized controlled unblinded study of 52 patients after elective coronary artery bypass surgery was carried out to determine whether a protocol incorporating a decremental target minute ventilation (DTMV) results in more rapid weaning of patients ventilated in ASV mode compared to a protocol incorporating a constant target minute ventilation.ResultsMedian duration of mechanical ventilation (145 vs 309 minutes; P = .001) and intubation (225 vs 423 minutes; P = .005) were significantly shorter in the DTMV group. There was no difference in adverse effects (42% vs 46%) or mortality (0% vs 0%) between the 2 groups.ConclusionsUse of a DTMV protocol for postoperative ventilation of cardiac surgical patients in ASV mode results in a shorter duration of ventilation and intubation without evidence of increased risk of adverse effects.Copyright © 2016 Elsevier Inc. All rights reserved.

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