The effectiveness of non-pharmacological interventions in reducing the incidence and duration of delirium in critically ill patients: a systematic review and meta-analysis.

PURPOSE: To evaluate the effect of non-pharmacological interventions versus standard care on incidence and duration of delirium in critically ill patients. METHODS: We searched electronic and grey literature for randomised clinical trials up to March 2018. Two reviewers independently screened, selected and extracted data. Meta-analysis was undertaken using random effects modelling. RESULTS: We identified 15 trials (2812 participants). Eleven trials reported incidence of delirium. Pooled data from four trials of bright light therapy showed no significant effect between groups (n = 829 participants, RR 0.45, 99% CI 0.10-2.13, P = 0.19, very low quality evidence). Seven trials of various individual interventions also failed to report any significant effects. A total of eight trials reported duration of delirium. Pooled data from two trials of multicomponent physical therapy showed no significant effect [n = 404 participants, MD (days) - 0.65, 99% CI - 2.73 to 1.44, P = 0.42, low quality of evidence]. Four trials of various individual interventions also reported no significant effects. A trial of family voice reorientation showed a beneficial effect [n = 30, MD (days) - 1.30, 99% CI - 2.41 to - 0.19, P = 0.003, very low quality evidence]. CONCLUSIONS: Current evidence does not support the use of non-pharmacological interventions in reducing incidence and duration of delirium in critically ill patients. Future research should consider well-designed and well-described multicomponent interventions and include adequately defined outcome measures.

Designing a nurse-delivered delirium bundle: What intensive care unit staff, survivors, and their families think?

BACKGROUND: Implementation of quality improvement interventions can be enhanced by exploring the perspectives of those who will deliver and receive them. We designed a non-pharmacological bundle for delirium management for a feasibility trial, and we sought to obtain the views of intensive care unit (ICU) staff, survivors, and families on the barriers and facilitators to its implementation. OBJECTIVE: The objective of this study is to determine the barriers and facilitators to a multicomponent bundle for delirium management in critically ill patients comprising (1) education and family participation, (2) sedation minimisation and pain, agitation, and delirium protocol, (3) early mobilisation, and (4) environmental interventions for sleep, orientation, communication, and cognitive stimulation. METHODS: Nine focus group interviews were conducted with ICU staff (n = 68) in 12 UK ICUs. Three focus group interviews were conducted with ICU survivors (n = 12) and their family members (n = 2). Interviews were digitally recorded, transcribed, and thematically analysed using the Braun and Clarke framework. RESULTS: Overall, staff, survivors, and their families agreed the bundle was acceptable. Facilitating factors for delivering the bundle were staff and relatives' education about potential benefits and encouraging family presence. Facilitating factors for sedation minimisation were evening ward rounds, using non-verbal pain scores, and targeting sedation scores. Barriers identified by staff were inadequate resources, poor education, relatives' anxiety, safety concerns, and ICU culture. Concerns were raised about patient confidentiality when displaying orientation materials and managing resources for early mobility. Survivors cited that flexible visiting and re-establishing normality were important factors; and staff workload, lack of awareness, and poor communication were factors that needed to be considered before implementation. CONCLUSION: Generally, the bundle was deemed acceptable and deliverable. However, like any complex intervention, component adaptations will be required depending on resources available to the ICU; in particular, involvement of pharmacists in the ward round and physiotherapists in mobilising intubated patients.

Impact of non-pharmacological interventions on prevention and treatment of delirium in critically ill patients: protocol for a systematic review of quantitative and qualitative research.

BACKGROUND: Critically ill patients have an increased risk of developing delirium during their intensive care stay. To date, pharmacological interventions have not been shown to be effective for delirium management but non-pharmacological interventions have shown some promise. The aim of this systematic review is to identify effective non-pharmacological interventions for reducing the incidence or the duration of delirium in critically ill patients. METHODS: We will search MEDLINE, EMBASE, CINAHL, Web of Science, AMED, psycINFO and the Cochrane Library. We will include studies of critically ill adults and children. We will include randomised trials and controlled trials which measure the effectiveness of one or more non-pharmacological interventions in reducing incidence or duration of delirium in critically ill patients. We will also include qualitative studies that provide an insight into patients and their families' experiences of delirium and non-pharmacological interventions. Two independent reviewers will assess studies for eligibility, extract data and appraise quality. We will conduct meta-analyses if possible or present results narratively. Qualitative studies will also be reviewed by two independent reviewers, and a specially designed quality assessment tool incorporating the CASP framework and the POPAY framework will be used to assess quality. DISCUSSION: Although non-pharmacological interventions have been studied in populations outside of intensive care units and multicomponent interventions have successfully reduced incidence and duration of delirium, no systematic review of non-pharmacological interventions specifically targeting delirium in critically ill patients have been undertaken to date. This systematic review will provide evidence for the development of a multicomponent intervention for delirium management of critically ill patients that can be tested in a subsequent multicentre randomised trial. SYSTEMATIC REVIEW REGISTRATION: PROSPERO CRD42015016625.