Effects of closed loop ventilation on ventilator settings, patient outcomes and ICU staff workloads – a systematic review

Author:

Goossen Robin L.,Schultz Marcus J.,Tschernko Edda,Chew Michelle S.,Robba Chiara,Paulus Frederique,van der Heiden Pim L.J.,Buiteman-Kruizinga Laura A.

Abstract

BACKGROUND Lung protective ventilation is considered standard of care in the intensive care unit. However, modifying the ventilator settings can be challenging and is time consuming. Closed loop modes of ventilation are increasingly attractive for use in critically ill patients. With closed loop ventilation, settings that are typically managed by the ICU professionals are under control of the ventilator's algorithms. OBJECTIVES To describe the effectiveness, safety, efficacy and workload with currently available closed loop ventilation modes. DESIGN Systematic review of randomised clinical trials. DATA SOURCES A comprehensive systematic search in PubMed, Embase and the Cochrane Central register of Controlled Trials search was performed in January 2023. ELIGIBILITY CRITERIA Randomised clinical trials that compared closed loop ventilation with conventional ventilation modes and reported on effectiveness, safety, efficacy or workload. RESULTS The search identified 51 studies that met the inclusion criteria. Closed loop ventilation, when compared with conventional ventilation, demonstrates enhanced management of crucial ventilator variables and parameters essential for lung protection across diverse patient cohorts. Adverse events were seldom reported. Several studies indicate potential improvements in patient outcomes with closed loop ventilation; however, it is worth noting that these studies might have been underpowered to conclusively demonstrate such benefits. Closed loop ventilation resulted in a reduction of various aspects associated with the workload of ICU professionals but there have been no studies that studied workload in sufficient detail. CONCLUSIONS Closed loop ventilation modes are at least as effective in choosing correct ventilator settings as ventilation performed by ICU professionals and have the potential to reduce the workload related to ventilation. Nevertheless, there is a lack of sufficient research to comprehensively assess the overall impact of these modes on patient outcomes, and on the workload of ICU staff.

Publisher

Ovid Technologies (Wolters Kluwer Health)

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